COM-1418 DS SPREAD-SPECTRUM DEMODULATOR

KEY FEATURES

Digital demodulator with flexible configuration:

Variable chip rate up to 22 Mchips/s
Speading factor 3 to 2047
BPSK, QPSK selectable
Center frequency: +/- 10 MHz

Spreading codes:

Gold sequences
Maximal length sequences
Barker codes (length 11, 13)
GPS C/A codes
Truncated codes

Demodulator data outputs: 4-bit soft-quantized to

Synchronous serial interface, or
USB 1.1/2.0

Demodulation performances: within 1.5 dB from theory at threshold SNR of 5 dB

Sequential code search

ComScope-enabled: key internal signals can be captured in real-time and displayed on the host computer

Connectorized 3"x 3" module for ease of prototyping. Standard 40 pin 2mm dual row connectors (left, right, bottom). Single 5V supply with reverse voltage and overvoltage protection. Interfaces with 3.3V LVTTL logic

ComBlock COMPATIBILITY LIST

Input	Output
COM-3008 Baseband receiver	COM-1005 Bit error rate measurement
COM-3007 2.3 - 2.8 GHz receiver	COM-7001 Turbo code error-correction decoder
COM-1019 Spread-spectrum digital modulator	COM-1009 Convolutional error-correction decoder
COM-1023 BER generator, AWGN generator	COM-5003 TCP-IP / USB gateway
COM-1024 Multipath simulator	COM-2001 Digital-to-analog converter (test)