Home >   Product List > COM-1012    DIRECT SEQUENCE SPREAD-SPECTRUM
                            MODULATOR   10 Mchip/s  

Key Features

• Direct sequence spread-spectrum (DS-SS) modulator.
• Programmable chip rates up to 10 Mchip/s.
• Spreading codes:
• Gold sequences (up to 2²³-1 chips)
• Maximal length sequences, (max length 2²³-1 chips)
• Barker codes (length 11, 13)
• Code modulation: BPSK/QPSK/OQPSK with output spectral shaping filter: raised cosine square root filter with 20%, 25%, or 40% rolloff.
• Internal generation of PRBS-11 pseudo-random bit stream and unmodulated carrier for test purposes.
• Built-in channel impairments generation:
    - additive white Gaussian noise
    - frequency offset (Doppler)
• Single 5V supply. Connectorized 3”x 3” module for ease of prototyping. Standard 40 pin 2mm dual row connectors (left, right, bottom). Interfaces with 5V and 3.3V logic.

 

Compatibility List

Input	Output
COM-1010 Convolutional encoder	COM-1011/1018 DSSS Demodulator (back to back)
COM-7001 Turbo Code Error correction encoder	COM-2001 digital-to-analog converter (baseband).
COM-8001 Arbitrary waveform signal generator 256MB/1GB	COM-4004 70 MHz IF modulator
	COM-1023 BER generator, Additive White Gaussian Noise Generator
	COM-1024 Multipath simulator.

 

Price and Availability     

 

Download Specifications 308 KB

 

Purchase 

Any suggestion for new/future ComBlocks?  Please let us know