LigoWave 2901 Broadband Digital Transmission System User Manual
LigoWave LLC Broadband Digital Transmission System
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User manual
FWBD-2901 Product brief
FWBD-2901 Product brief
FWBD-2901
FWBD-2901 Product brief
FWBD-2901 has 802.11ac 2×2 radio supporting up to 866.7 Mbps data-rate
The FWBD-2901 is consisting of two major sections,
Digital section and Analog Section
DIGITAL SECTION
The section is made up of:
QCA9557
DDR2 Memory
Flash Memory
Power Supplies
QCA9557 (CPU)
The Qualcomm Atheros QCA9557 is a highly
integrated and feature-rich IEEE 802.11n 2x2 2.4/5
GHz System-on-a-Chip (SoC) for advanced WLAN
AP/router platforms. It includes a MIPS 74Kc
processor, one PCI Express 1.1 Root Complex and
one PCI Express Root Complex/Endpoint interfaces,
one RGMII interface, one SGMII interface, two USB
2.0 MAC/PHY, and external memory interface for
serial Flash, DDR1 or DDR2, I2S/SPDIF-Out audio
interface, SLIC VOIP/PCM interface, two UARTs, and
GPIOs that can be used for LED controls or other
general purpose interface configurations. The
QCA9557 supports 802.11n operations up to 144.4
Mbps for 20 MHz and 300 Mbps for 40 MHz, and
802.11a/b/g data rates. Additional features include
Maximal Likelihood (ML) decoding, Low-Density
Parity Check (LDPC), Maximal Ratio Combining
(MRC), Tx Beamforming (TxBF), and On-Chip
One-Time Programmable (OTP) memory.
The QCA9557 PCIE Root Complex interface can be
used to connect to an endpoint such as the
Qualcomm Atheros single-chip MAC/PHY/radio for
dual concurrent WLAN applications. The QCA9557
supports booting from either SPI NOR or NAND
flash. If NOR flash is used as boot codestore, an
additional NAND flash device can still be
connected, for end-user multi-media storage and
other applications.
QCA9882 (Radio)
The Qualcomm Atheros QCA9882 s a highly
integrated wireless local area network (WLAN)
system-on-chip (SoC) for 5 GHz 802.11ac or 5 GHz
802.11n WLAN applications. The QCA9882
integrates an on-board CPU for low-level setup of
WLAN physical layer (PHY) and RF to offload the
host processor for other tasks. It enables
high-performance 2x2 MIMO with three spatial
streams for wireless applications demanding the
highest robust link quality and maximum
throughput and range.
The QCA9880 supports up to two simultaneous
traffic streams integrating two Tx and three Rx
chains for high throughput and extended coverage.
Tx chains combine PHY in-phase (I) and quadrature
(Q) signals, convert them to the desired frequency,
and drive the RF signal to multiple antennas. Rx
chains use an integrated architecture. The
frequency synthesizer supports 1-MHz steps to
match frequencies defined by IEEE 802.11a/n/ac
specifications. The QCA9882 supports frame data
transfer to and from the host using a PCIE interface
providing interrupt generation and report
Power Supplies
The 48V/0.5A DC input voltage is regulated to the
following voltages for various purposes:
+1.2V for CPU core voltage
+3.3V for CPU, Flash, DDR
+5V RF
ANALOG SECTION
QCA9882 has integrated 2T2R MAC, BBP and RF. Each
TX/RX chain only needs out-of-band rejection filters,
Low noise power amplifier, Power amplifier and a
switch to switch between transmission and reception
mode. The switch and LNA on/off are controlled by the
QCA9882 BBP integrated module.
FWBD-2901 Product brief
Specification
Feature
Description
Operating band
IEEE 802.11a: 5180MHz-5240MHz, 5745MHz-5825MHz
IEEE 802.11nHT20: 5180MHz-5240MHz, 5745MHz-5825MHz
IEEE 802.11nHT40: 5190MHz-5230MHz, 5755MHz-5795MHz
IEEE 802.11ac:5210MHz, 5775MHz
CPU
QCA9557
RAM
128MB
Flash memory
128MB
Watchdog timer
Built into CPU
Reset push button
Connected to GPIO
LED’s
Special connector to connect external LED board
Ethernet
One 10/100/1000 Ethernet port
Power options
802.3af/at PoE (RJ45)
Power supply range
48-56V
Serial port (UART)
3.3V TTL level, not end user accessible
Operating temperature range
From -400C to 700C
Module dimensions
Unit : mm
FWBD-2901 Product brief
4
Block diagram
Module
1- 1000 Base-T Ethernet port
2- Buttons(reset and user-GPIO
connected)
3- MCX RF connector
4- LED (GPIO connected)
1
2-
90
-1
6
PR
O
2
2-
90
-1
6
PR
O
3
2-
90
-1
6
PR
O
3
4
FWBD-2901 Product brief
Hardware Setup
Software Source
Software of FWBD-2901 module base on OpenWrt Linux, OpenWrt source code be used for FWBD-2901
The Product is a FIXED Point TO Point DEVICE ONLY, and it should be installed by professional installer.
and can also work within the temperature of -30 ℃ to 50 ℃.
The EUT has the ability to be maintained within the authorized band within a Max tolerance of ±116KHz of
centre frequency.
Antenna Type:
LigoDLB PRO sector antenna:
Manufacture: LigoWave
Model : FWA-40
17dBi sector antenna with two antennas, directional gain 20dBi.
PTP5-23 PRO panel antenna:
Manufacture: LigoWave
Model : FWA-1-1
20dBi panel antenna with two antennas, directional gain 23dBi.
Dish antenna:
Manufacture: ARC Wireless LLC
Model : ARC-DA5830SD1
27dBi dish antenna with two antennas, directional gain 30dBi
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