Adaptrum ACRS10 TV Band Device User Manual acrs10 user manual

Adaptrum, Inc TV Band Device acrs10 user manual

acrs10_user_manual

1 ACRS 1.0 User Manual
2 FCC Regulatory Information 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, and (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. Part 15 TV Band Device Notice This equipment has been tested and found to comply with the rules for TV bands devices, pursuant to part 15 of the FCC rules. These rules are designed to provide reasonable protection against harmful interference. 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. 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: (1) Reorient or relocate the receiving antenna. (2) Increase the separation between the equipment and receiver. (3) Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. (4) Consult the manufacturer, dealer or an experienced radio/TV technician for help. Caution: Exposure to Radio Frequency Radiation. To comply with FCC RF exposure compliance requirements, for fixed configurations, a separation distance of at least 40 cm must be maintained between the antenna of this device and all persons. This device must not be co-located or operating in conjunction with any other antenna or transmitter.
3 Introduction ACRS 1.0 is the first generation Adaptrum cognitive radio system covering spectrum bands from 400 MHz to 1 GHz. Although capable to operate in other spectrum bands below 1 GHz, Adaptrum ACRS 1.0 is specifically designed to operate in the UHF TV Band (470 MHz – 698 MHz), as TV Band Devices compliant to the rules specified in CFR 47 Part 15 Subpart H. To be rules-compliant, ACRS 1.0 systems must operate as Fixed TV Band Devices and must be professionally installed. ACRS 1.0 system specifications are shown in the following table. General Specifications Technology TDD OFDMA Network topology Point to Multi-Point Frequency range 400 MHz – 1000 MHz Channel bandwidth Flexible up to 10 MHz Supporting 6, 7, 8 MHz TV channels Aggregated data rate 1 Mbps – 13 Mbps (per 6 MHz channel) Uplink/downlink Ratio Any MIMO Up to 4 antennas Transmit power < 1 W conducted Channel bandwidth efficiency ~92 percent Adjacent channel emission < -57 dBc Typical receiver sensitivity (6 MHz Channel) Signal level SNR Data Throughput -98 dBm 3.5 dB 2.7 Mbps (QPSK 1/2) -90 dBm 11.5 dB 7.1 Mbps (16 QAM 2/3) -81 dBm 20.5 dB 12 Mbps (64 QAM 3/4) Interface Specifications Antenna connector Type N female Data/control interface 10/100 Ethernet Electrical and Mechanical Specifications Power supply 110 V AC or 220 V AC Physical dimensions 17 inches x 12 inches x 4.5 inches Weight 14 LB Adaptrum ACRS 1.0 system specifications. ACRS 1.0 radio unit is enclosed in a 2U size box whose front panel and back panel are shown in the following pictures. Both the base station and the client station use the same radio unit.
4
5 ACRS 1.0 system must be professionally installed. Please refer to “ACRS 1.0 Professional Installer Manual” for detailed discussion on hardware installation. After installation, the base station and client station system configurations are illustrated in the following figures. ACRS 1.0Base RadioFeed CableAntennaBase Control PCEthernetInternetEthernet Base station installation diagram. ACRS 1.0Client RadioFeed CableAntennaClient Control PCEthernet Broadband RouterEthernetEthernet/WiFiClient Devices Client station installation diagram. A whitespace communication link is established between the base station and client station allowing the client side networking devices to connect to the Internet. Multiple client units may connect to the same base station. From the IP networking perspective, the base station acts like a layer 2 bridge to the client-side networking devices connected to the client control PC. As shown in Figure 3, both the base control PC and the client side broadband router will have IP addresses on the hosting subnet. Multiple client side devices may be visible on the subnet if the broadband router is replaced with a switch. Subnet 192.168.0.1Base PC Broadband Router192.168.0.100 192.168.0.101 Illustration of network topology. System Operation Please refer to “ACRS 1.0 Professional Installer Manual” for detailed discussion on hardware and software installation. Once installed, the main software can be launched on the control PCs through the
6 shortcut in the “Start Menu” folder. The software will be launched in the “User” mode. When running in the “User” mode, the software only has access to limited database functions. GUI Control Interface Base station GUI control panel "Link" pane in the “User” mode. The GUI control panel is shown in the above figure. The GUI panel has a main frame body and 6 panes: Log, Link, System Information, Diagnostics, Database and Installation. Among them, the “Link” and “Database” panes are most useful in terms of monitoring system performance and interacting with TVWS database. The figure above and figure below show the base station “Link” and “Database” panes respectively. Referring to the “Database” pane below, in the “User” mode, the information entries for device registration and channel list request are disabled. These information are entered during installation and loaded directly from the system registry in the “User” mode. Note further that the channel list request is sent periodically with the period specified in the field “Update Interval” which is 300 seconds by default.
7 Base station GUI control panel “Database” pane. The base and client control panels are only slightly different. The following two figures show the client station “Link” and “Database” panes. Again, the client software will operate in the “User” mode and the information entries for device registration and channel list request are disabled and loaded directly from system registry. Note that the client station “Database” pane allows the user to set scan channel list in case the connection to the base station is lost. The scan channel list has been set during installation and loaded from system registry but the user is able to modify it.
8 Client station GUI control "Link" pane. Client station GUI control "Database" pane.
9 . Base Station Operation The base station operation is discussed in the following. 1) When the software first launches on the base control PC, the base operating channel is unset as shown in the following figure. The software has already contacted the database and the available channels are shown after “WS Channels”. The prompt “Select From Available Channels” request the user to select a valid channel from the channel list. Note further that device registration is not performed in the “User” mode but during installation – see “ACRS 1.0 Professional Installer Manual”. 2) Select a channel from the pull down menu on the prompt and click “Select” to set the base operating channel as shown in the following. 3) After the channel selection, the link pane is shown as following. Click “Start Service” to start transmission on the base station.
10 4) After the client station successfully connects to the base station, the “Link” pane will show uplink and downlink data rates, modulation schemes, BERs, PERs and signal power estimations as shown in the following figure. Note once connected to the base station, the client station will also send periodical channel list request to the database through the base station.
11 Client Station Operation The client station operation is discussed in the following. 1) When the software first launches on the client station control PC in the “User” mode, the client channel is set to an invalid whitespace channel as shown in the following figure and the client station is inactive.
12 2) The software prompts the user to rescan the channels in the “Scan Channel Set”. The default scan channel set is entered during installation and is loaded from system registry. However, the user can also modify the scan channel list using “…” button after “Scan Channel Set” as shown in the following figure and click “Update Now”. Click “Rescan” on the prompt “Scan Channels” to rescan the channels in the scan channel set. 3) The system will scan all the channels. Once a signal is detected on a channel, the client will send a channel list request to the base station on the channel. If the channel list request is successful
13 and the returned channel list contains the current operating channel, channel search is successful and the client will enter normal operation mode. 4) During normal operation, the “Link” pane can be used to monitor the performance.
14 5) During normal operation, the client will send channel list request periodically to the base station (every 300 seconds). When the current operating channel is no long in the list, the client will enter scanning mode again and rescan all the channels in the scan channel set.

Navigation menu