Proware Technologies Co DN523V2 300M Mini Wireless N USB Adapter User Manual UG rev1

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PW-DN523
300M Mini Wireless N USB Adapter
Rev: 1.0.0
COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice.
is a registered trademark of
PROWARE TECHNOLOGIES CO., LTD. Other brands and product names are trademarks or
registered trademarks of their respective holders.
No part of the specifications may be reproduced in any form or by any means or used to make any
derivative such as translation, transformation, or adaptation without permission from PROWARE
TECHNOLOGIES CO., LTD. Copyright © 2010 PROWARE TECHNOLOGIES CO., LTD. All
rights reserved.
http://www.proware.com.cn
FCC STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following
measures:
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and receiver.
•
Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
•
Consult the dealer or an experienced radio/ TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may
cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
FCC RF Radiation Exposure Statement:
This device has been tested for compliance with FCC RF Exposure (SAR) limits in the typical
laptop computer configuration and this device can be used in desktop or laptop computers with
side mounted PCMCIA slots. This device cannot be used with handheld PDAs (personal digital
assistants). This device and its antenna must not be co-located or operated in conjunction with
any other antenna or transmitter.
CE Mark Warning
This is a class B product. In a domestic environment, this product may cause radio interference, in
which case the user may be required to take adequate measures.
National restrictions
This device is intended for home and office use in all EU countries (and other countries following
the EU directive 1999/5/EC) without any limitation except for the countries mentioned below:
Country
Restriction
Bulgaria
None
Reason/remark
General authorization required for outdoor use and
public service
France
Outdoor use limited to 10
Military Radiolocation use. Refarming of the 2.4 GHz
mW e.i.r.p. within the band
band has been ongoing in recent years to allow current
2454-2483.5 MHz
relaxed regulation. Full implementation planned 2012
If used outside of own premises, general authorization is
Italy
None
required
General authorization required for network and service
Luxembourg
None
supply(not for spectrum)
This subsection does not apply for the geographical area
Norway
Implemented
within a radius of 20 km from the centre of Ny-Ålesund
Russian Federation
None
Only for indoor applications
Note: Please don’t use the product outdoors in France.
Make sure the adapter is more than 5mm away from you when it in use.
CONTENTS
Package Contents .................................................................................................... 1
Chapter 1 Introduction ......................................................................................... 2
1.1
Overview of the Product ........................................................................................ 2
1.2
Features ................................................................................................................ 2
1.3
LED Status ............................................................................................................ 3
Chapter 2
Installation Guide ................................................................................ 4
2.1
Hardware Installation............................................................................................. 4
2.2
Software Installation .............................................................................................. 4
2.2.1
Overview ................................................................................................ 4
2.2.2
Software Installation for Windows XP .................................................... 4
2.2.3
Software Installation for Windows Vista ................................................. 8
Chapter 3
Configuration..................................................................................... 13
3.1
General Status .................................................................................................... 13
3.2
Profile Management ............................................................................................ 14
3.2.1
Add or Edit a Configuration Profile ....................................................... 15
3.2.2
Remove a configuration profile............................................................. 20
3.2.3
Duplicate a configuration file ................................................................ 21
3.2.4
Set default configuration profile............................................................ 21
3.3
Available Network................................................................................................ 21
3.4
Status .................................................................................................................. 22
3.5
Statistics .............................................................................................................. 23
3.6
Wi-Fi Protect Setup ............................................................................................. 24
3.7
3.6.1
PIN ....................................................................................................... 25
3.6.2
Question-Answer Method..................................................................... 26
Access Point Mode.............................................................................................. 27
Appendix A: Specifications................................................................................... 28
Appendix B: Glossary............................................................................................ 29
Package Contents
The following items should be found in your package:
¾
¾
¾
One PW-DN523 300M Mini Wireless N USB Adapter
Quick Installation Guide
One Resource CD for PW-DN523, including:
•
•
•
Wireless Utility and Drivers
User Guide
Other Helpful Information
) Note:
Make sure that the package contains the above items. If any of the listed items are damaged or
missing, please contact with your distributor.
Conventions:
The ‘Adapter’ mentioned in this User guide both stand for PW-DN523 300M Mini Wireless N USB
Adapter without any explanations.
PW-DN523
300M Mini Wireless N USB Adapter
Chapter 1 Introduction
Thank you for choosing the PW-DN523 300M Mini Wireless N USB Adapter!
1.1
Overview of the Product
The adapter is a 802.11n client device; it is designed to provide a high-speed and unrivaled
wireless performance for your notebook and PC. With a faster wireless connection, you can get a
better Internet experience, such as downloading, gaming, video streaming and so on.
With the 802.11n technology, higher throughput improvements using MIMO (multiple input,
multiple output antennas), the PW-DN523’s auto-sensing capability allows high packet transfer
rate of up to 300Mbps for receiver and 150Mbps for transmitter. It has good capability on
anti-jamming, it can also interoperate with other wireless (802.11b/g) products. The adapter
supports WEP, WPA and WPA2 encryption to prevent outside intrusion and protect your personal
information from being exposed.
With unmatched wireless performance, reception, and security protection, the PW-DN523 is the
best choice for easily adding or upgrading wireless connectivity.
1.2
Features
¾
Complies with IEEE802.11n, IEEE802.11g, IEEE802.11b standards
¾
Supports IEEE802.1x authentication, WEP, WPA/WPA2/WPA-PSK/WPA2-PSK encryption
¾
Supports high rate of up to 300Mbps for receiver and 150Mbps for transmitter, supports
automatically adjust to lower speeds due to distance or other operating limitations
¾
Provides USB interface
¾
Supports Ad-Hoc and Infrastructure modes
¾
Good capability on anti-jamming
¾
Supports roaming between access points when configured in Infrastructure mode
¾
Ease to configure and provides monitoring information
¾
Supports Windows XP, Windows vista, Windows 7.
¾
Built-in two internal antennas which are listed in a format of 1x2 for two receivers and one
transmitter.
PW-DN523
1.3
300M Mini Wireless N USB Adapter
LED Status
Status
Off
Working Status
The driver has not been installed.
Flashing Slowly
The driver has been installed but there is no data being transmitted
or received.
Flashing Quickly
There is data being transmitted or received.
PW-DN523
300M Mini Wireless N USB Adapter
Chapter 2 Installation Guide
2.1
Hardware Installation
There are two ways to install the Adapter:
1. Plug the Adapter directly to the USB port on your computer.
2. Connect the Adapter and your computer through the USB cable attached in package.
The LED will light up when the Adapter is installed successfully and the PC is on.
2.2
Software Installation
2.2.1 Overview
The Adapter’s Setup Wizard will guide you through the Installation procedur. The Setup Wizard
will install the Wireless Utility and drivers.
When you install the hardware before installing the software, the system will prompt “Found New
Hardware Wizard”, click Cancel, and run the Setup Wizard program on the CD-ROM.
The Setup steps for Windows operation Systems are very similar. The User guide takes the
Windows XP for example to explain the installation.
2.2.2 Software Installation for Windows XP
Step 1: Insert the Resource CD into your CD-ROM drive, and open the folder with the same
name as your product. Then double-click Setup.exe in the proper folder to start the
installation, and Figure 2-1 will appear. Select the language for the installation. Click
Next in the screen below to continue, you can click Cancel to end the installation.
PW-DN523
300M Mini Wireless N USB Adapter
Figure 2-1
Step 2: You can click Cancel to end the installation in the screen. Otherwise, the installation will
continue.
Step 3: Click Next in the screen below (shown in Figure 2-2) to continue, you can click Cancel to
end the installation.
PW-DN523
300M Mini Wireless N USB Adapter
Figure 2-2
Step 4: After that, the next screen appears, select Install to continue.
Figure 2-3
Step 5: In the next screen, the files will be copied as the next screen shown (shown in Figure
2-4). To end the Installation, click Cancel.
PW-DN523
300M Mini Wireless N USB Adapter
Figure 2-4
) Note:
During the installation, the system will warn about Windows Logo testing, please click Continue
Anyway to continue the installation.
Figure 2-5
Step 6: Click the Finish button to complete.
PW-DN523
300M Mini Wireless N USB Adapter
Figure 2-6
2.2.3 Software Installation for Windows Vista
The Setup steps for Windows Vista and Windows 7 are very similar. The User guide takes the
Windows Vista for example to explain the installation.
1.
Insert the Resource CD into your CD-ROM drive, and open the folder with the same name as
your product. Then double-click Setup.exe in the proper folder according to your operating
system to start the installation. And then Figure 2-7 will appear; Select the language for the
installation. Click Next in the screen below to continue, you can click Cancel to end the
installation.
PW-DN523
300M Mini Wireless N USB Adapter
Figure 2-7
2.
You can click Cancel to end the installation in the screen. Otherwise, the installation will
continue.
Figure 2-8
3.
Click Next in the screen below to continue, you can click Cancel to end the installation.
PW-DN523
300M Mini Wireless N USB Adapter
Figure 2-9
4.
After that, the next screen appears, select Install to continue.
5.
After that, the files will be copied as the next screen shown (shown in Figure 2-10). To end
the Installation, click Cancel.
10
PW-DN523
300M Mini Wireless N USB Adapter
Figure 2-10
) Note:
During the installation, the system will warn about Windows Security testing, please click “Install
this driver software anyway” to continue the installation.
Figure 2-11
6.
Click the Finish button to complete.
11
PW-DN523
Figure 2-12
12
300M Mini Wireless N USB Adapter
PW-DN523
300M Mini Wireless N USB Adapter
Chapter 3 Configuration
300M Mini Wireless N USB Adapter PW-DN523 can be configured by REALTEK 11 n USB
Wireless LAN Utility. This chapter describes how to configure your 300M Mini Wireless N USB
Adapter for wireless connectivity on your Wireless Local Area Network (WLAN) and use the data
security encryption features.
After Installing the Adapter, the Adapter’s tray icon
will appear in your system tray. It appears
at the bottom of the screen, and shows the signal strength using color and the received signal
strength indication (RSSI).
If the icon is gray, there is no connection.
If the icon is red, there is poor signal strength.
If the icon is yellow, there is poor signal strength.
If the icon is green, there is good signal strength.
If the icon is green, there is excellent signal strength.
Double-click the icon and the REALTEK 11 n USB Wireless LAN Utility will run. You can also run
the utility by clicking the Start>Programs>REALTEK 11 n USB Wireless LAN Utility>
REALTEK 11 n USB Wireless LAN Utility. The utility provides integrated and easy tool to:
¾
Display current status information
¾
Edit and add configuration profiles
¾
Display current statistics information
The sections below take Windows XP for example to introduce these above capabilities.
3.1
General Status
Choose the tab General as shown in Figure 3-1, the left filed displays the type of the adapter, the
right field displays the status about the connection, including Status, Speed, Type, SSID, Signal
Strength, Link Quality and other IP information.
13
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-1
¾
Signal Strength - This shows the strength of the wireless signal.
¾
Link Quality - This shows the quality of the wireless connection.
¾
ReNew IP - Click the button to get the IP address from the AP.
¾
Show Tray Icon - Select the option to display the icon
¾
Disable Adapter - If you select the option, the adapter can’t work.
¾
Radio Off - If you select the option, the wireless function will be ineffective.
¾
Windows Zero Config - Select the option, you can use the Windows Zero Config function.
on the bottom of the desktop.
Click Close to close the screen.
3.2
Profile Management
Click the tab Profile as shown in Figure 3-2 to add, remove, edit, duplicate or set default for a
profile.
14
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-2
3.2.1
Add or Edit a Configuration Profile
Click the button Add or Edit (you should select an existed profile first to edit it) on the screen
above, and you can configure the profile as shown in Figure 3-3.
We add a new profile and configure it for example here.
15
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-3
¾
Profile Name - Please enter the Profile name which identifies the configuration profile. This
name must be unique. Note that the profile names are not case-sensitive.
¾
Network Name (SSID) - Please enter the IEEE 802.11 wireless network name. This field has
a maximum limit of 32 characters.
) Note:
The Profile Name and Network Name are necessary for the profile, you must configure it.
¾
Channel - If you want to setup an ad-hoc, select the option “This is a computer-to-computer
(ad-hoc) network; wireless access points are not used.” If you don't select the option, the
system will search the available channel to connect.
¾
Wireless network security - This configure the security for the adapter.
) Note:
Limited by local law regulations, version for North America will limit the channel to 1 to 11.
You should configure the security for the adapter according with the wireless network that you
want to connect. If the wireless network takes some security measure, you should configure the
same security for the adapter accordingly. If the wireless network doesn’t take security measure,
you don’t need to configure the security for the adapter.
•
Network Authentication - Select which mode the 300M Mini Wireless N USB Adapter
uses to authenticate to an access point. These modes are: Open System, Shared key,
WPA-PSK, WPA2-PSK, WPA 802.1X, WPA2 802.1X, and WEP 802.1X.
•
Data encryption - Select the corresponding data encryption for the authentication.
These encryptions are: Disabled, WEP, TKIP and AES.
16
PW-DN523
300M Mini Wireless N USB Adapter
) Note:
1) Select different authentications and data encryptions, the security configuration is
different.
2) When you select channel manually, the available network authentication are Open
System, Shared key and WPA-None.
3) The RTWCU does not support WPA 802.1x authentication in Windows Vista, while the
Windows Zero Config Tools may satisfy your need.
¾
•
ASCII - Select this option, you can enter any ASCII characters to compose the
password.
•
•
Key Index - Select the index of the password.
Network Key & Confirm network key - The fields configure the network key. The two
should be the same.
802.1x configure - This configures the 802.1x security, it is available when you select the
data encryption as WPA 802.1X, WPA2 802.1X or WEP 802.1X.
1.
•
EAP TYPE - Select the EAP type for the 802.1x configuration, the options are: GTC, TLS,
LEAP, TTLS, PEAP.
•
Tunnel - Select the tunnel: MD5, GTC, TLS, and MSCHAP-V2. The option is necessary
for the EAP type of TTLS and PEAP.
•
Username - Enter the username for authentication. The option is necessary for the EAP
type of TTLS and PEAP.
•
•
Identity - Enter the identity for the authentication.
Password - Enter the password for the authentication. The option is necessary for the
EAP type of LEAP, TTLS and PEAP.
•
Certificate - Select the certificate you apply.
Open System authentication
When you select the Open System as the authentication, the Disabled and WEP can be available
for the data encryption. If you select Disabled, you don’t need to configure any passwords. If you
select WEP, you can configure the password as follows.
For example: If the wireless network takes Open System authentication, WEP data encryption,
the password is 64bit with the value of 0123456789. The index is 1.
17
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-4
Step 1: Select the “Open System” as the Network Authentication.
Step 2: Select the “WEP” as Data encryption.
Step 3: Select the type for the password and you can select the ASCII or Network Key. For
ASCII, you can enter any characters in the keyboard; For Network Key, you can enter
the characters from 0 to 9.
Step 4: Select the Key index “1”.
Step 5: Enter “0123456789” as the Network key.
Step 6: Enter it again to confirm the Network Key and click the OK to save the configuration.
2.
Shared Key authentication
When you select the Shared Key as the authentication, the only available data encryption is
WEP.
) Note:
The configuration for Shared Key authentication and Open System are similar, you can refer to
the Open System authentication to configure it.
3.
WPA-PSK authentication
When you select the WPA-PSK as the authentication, the available data encryptions are TKIP
and AES. Please select the one according your need.
For example: If the wireless network takes WPA-PSK authentication, TKIP data encryption, the
network key is 0123456789. You can configure it for adapter as follows.
18
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-5
Step 1: Select the “WPA-PSK” as the Network Authentication.
Step 2: Select the “TKIP” as Data encryption.
Step 3: Enter the Network key and confirm it.
Step 4: Click the OK to save the configuration.
4.
WAP2-PSK authentication
When you select the WPA2-PSK as the authentication, the available data encryptions are TKIP
and AES. Please select the one according your need.
) Note:
The configuration for WPA2-PSK and WPA-PSK are similar, you can refer to WAP-PSK
authentication to configure it.
5.
WPA 802.1x
When you select the WPA 802.1x as the authentication, the available data encryptions are TKIP
and AES. For the authentication, you should configure the 802.1x security. Select the EAP Type
and configure the corresponding options.
19
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-6
) Note:
Select different EAP types, the configuration are different.
6.
WPA2 802.1x
When you select the WPA2 802.1x as the authentication, the available data encryptions are TKIP
and AES. For the authentication, you should configure the 802.1x security.
) Note:
The configuration for WPA2 802.1x and WPA 802.1x are similar, you can refer to WPA 802.1x
authentication to configure it.
7.
WEP 802.1x
When you select the WEP 802.1x as the authentication, the only available data encryption is
WEP.
) Note:
The configuration for WEP 802.1x authentication and WPA 802.1x are similar, you can refer to
WPA 802.1x authentication to configure it.
3.2.2 Remove a configuration profile
Follow the steps below to delete a configuration profile.
Step 1: Go to the Profile tab (shown in Figure 3-7).
Step 2: Select the profile name in the Profiles List.
20
PW-DN523
300M Mini Wireless N USB Adapter
Step 3: Click Remove.
Figure 3-7
3.2.3 Duplicate a configuration file
Follow the steps below to change the name of a configuration profile.
Step 1: Go to the Profile tab (shown in Figure 3-7).
Step 2: Select the profile name in the Profiles List.
Step 3: Click Duplicate, and then enter the new name for the configuration profile.
3.2.4 Set default configuration profile
Follow the steps below to select a configuration profile as default. Once the adapter wants to
connect a wireless network, it will select the default profile to connect firstly.
Step 1: Go to the Profile tab (shown in Figure 3-7).
Step 2: Select the profile name in the Profiles List.
Step 3: Click Set Default.
3.3
Available Network
Click the tab Profile as shown in Figure 3-8 to view the wireless networks. You can follow the
steps below to accede to a specific network.
21
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-8
Step 1: Click Refresh to refresh the list at any time.
Step 2: Highlight a network name and click Add to Profile to connect to an available network.
Fill in the Profile name and click OK to create the new configuration profile for that
network.
3.4
Status
Click the tab Status as shown in Figure 3-9 to view the information about the connection.
22
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-9
3.5
Statistics
Click the tab Statistics as shown in Figure 3-10 to view the traffic statistics about the connection.
Click the Reset to refresh the information.
23
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-10
3.6
Wi-Fi Protect Setup
Click the tab Wi-Fi Protect Setup as shown in Figure 3-11, select different way to configure the
adapter for Wi-Fi network.
24
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-11
) Note:
The Wi-Fi Protect Setup function takes effect only when the adapter and the AP (the adapter
wants to connect) must support the Wi-Fi function first. Or else, the adapter can’t connect the AP.
3.6.1 PIN
Step 1: Select the PIN (shown in Figure 3-11).
Step 2: Click the Refresh button, and then the searched AP will display in the screen (shown in
Figure 3-12). Select the AP name as you need, and click Select button.
25
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-12
Step 3: After that, the PIN Code displays on the screen (shown in Figure 3-13). Now, you should
enter the pin code into your AP.
Figure 3-13
Step 4: Finally, the adapter will create the profile and connect to the AP automatically. This is a
new connection for Wi-Fi network.
3.6.2 Question-Answer Method
Step 1: Click PBC as shown in Figure 3-11.
26
PW-DN523
300M Mini Wireless N USB Adapter
Figure 3-14
Step 2: Push the physical button on the AP.
Step 3: Finally, the adapter will create the profile and connect to the AP automatically.
3.7
Access Point Mode
Click Access Point as below to switch to Access Point Mode. In this mode you can use the
PW-DN523 as a soft AP. Here you can also do some basic configurations.
27
PW-DN523
300M Mini Wireless N USB Adapter
Appendix A: Specifications
Normal
Interface
USB 2.0 Interfaces
Standards
IEEE802.11n; IEEE802.11g; IEEE802.11b;
Operating System
Windows XP, Windows Vista, Windows 7
Radio Data Rate
11b：1/2/5.5/11Mbps
11g：6/9/12/18/24/36/48/54Mbps
11n：Up to 300Mbps for receiver
Modulation
11b:CCK,QPSK,BPSK;
11g:OFDM;
11n: QPSK,BPSK,16-QAM,64-QAM
Media Access Protocol
CSMA/CA with ACK
Data Security
WPA/WPA2; 64/128-bit WEP; TKIP/AES
Frequency
2.4 ~ 2.4835GHz
Spread Spectrum
Direct Sequence Spread Spectrum (DSSS)
Safety & Emissions
FCC, CE
Environmental and Physical
Operating Temp.
0℃~40℃ (32℉~104℉)
Storage Temp.
-40℃~70℃ (-40℉~158℉)
Humidity
10%~95% RH, Non-condensing
28
PW-DN523
300M Mini Wireless N USB Adapter
Appendix B: Glossary
¾
802.11b - The 802.11b standard specifies a wireless product networking at 11 Mbps using
direct-sequence spread-spectrum (DSSS) technology and operating in the unlicensed radio
spectrum at 2.4GHz, and WEP encryption for security. 802.11b networks are also referred to
as Wi-Fi networks.
¾
802.11g - specification for wireless networking at 54 Mbps using direct-sequence
spread-spectrum (DSSS) technology, using OFDM modulation and operating in the
unlicensed radio spectrum at 2.4GHz, and backward compatibility with IEEE 802.11b devices,
and WEP encryption for security.
¾
Ad-hoc Network - An ad-hoc network is a group of computers, each with a 300M Mini
Wireless N USB Adapter, connected as an independent 802.11 wireless LAN. Ad-hoc
wireless computers operate on a peer-to-peer basis, communicating directly with each other
without the use of an access point. Ad-hoc mode is also referred to as an Independent Basic
Service Set (IBSS) or as peer-to-peer mode, and is useful at a departmental scale or SOHO
operation.
¾
DSSS (Direct-Sequence Spread Spectrum) - DSSS generates a redundant bit pattern for all
data transmitted. This bit pattern is called a chip (or chipping code). Even if one or more bits
in the chip are damaged during transmission, statistical techniques embedded in the receiver
can recover the original data without the need of retransmission. To an unintended receiver,
DSSS appears as low power wideband noise and is rejected (ignored) by most narrowband
receivers. However, to an intended receiver (i.e. another wireless LAN endpoint), the DSSS
signal is recognized as the only valid signal, and interference is inherently rejected (ignored).
¾
FHSS (Frequency Hopping Spread Spectrum) - FHSS continuously changes (hops) the
carrier frequency of a conventional carrier several times per second according to a
pseudo-random set of channels. Because a fixed frequency is not used, and only the
transmitter and receiver know the hop patterns, interception of FHSS is extremely difficult.
¾
Infrastructure Network - An infrastructure network is a group of computers or other devices,
each with a 300M Mini Wireless N USB Adapter, connected as an 802.11 wireless LAN. In
infrastructure mode, the wireless devices communicate with each other and to a wired
network by first going through an access point. An infrastructure wireless network connected
to a wired network is referred to as a Basic Service Set (BSS). A set of two or more BSS in a
single network is referred to as an Extended Service Set (ESS). Infrastructure mode is useful
at a corporation scale, or when it is necessary to connect the wired and wireless networks.
¾
Spread Spectrum - Spread Spectrum technology is a wideband radio frequency technique
developed by the military for use in reliable, secure, mission-critical communications systems.
It is designed to trade off bandwidth efficiency for reliability, integrity, and security. In other
words, more bandwidth is consumed than in the case of narrowband transmission, but the
trade off produces a signal that is, in effect, louder and thus easier to detect, provided that the
receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is
not tuned to the right frequency, a spread-spectrum signal looks like background noise.
29
PW-DN523
300M Mini Wireless N USB Adapter
There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency
Hopping Spread Spectrum (FHSS).
¾
SSID - A Service Set Identification is a thirty-two character (maximum) alphanumeric key
identifying a wireless local area network. For the wireless devices in a network to
communicate with each other, all devices must be configured with the same SSID. This is
typically the configuration parameter for a wireless PC card. It corresponds to the ESSID in
the wireless Access Point and to the wireless network name. See also Wireless Network
Name and ESSID.
¾
WEP (Wired Equivalent Privacy) - A data privacy mechanism based on a 64-bit or 128-bit or
152-bit shared key algorithm, as described in the IEEE 802.11 standard.
¾
Wi-Fi - A trade name for the 802.11b wireless networking standard, given by the Wireless
Ethernet Compatibility Alliance (WECA, see http://www.wi-fi.net), an industry standards
group promoting interoperability among 802.11b devices.
¾
WLAN (Wireless Local Area Network) - A group of computers and associated devices
communicate with each other wirelessly, which network serving users are limited in a local
area.
¾
WPA (Wi-Fi Protected Access) - A wireless security protocol use TKIP (Temporal Key
Integrity Protocol) encryption, which can be used in conjunction with a RADIUS server.
30

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