COM-1826SOFT TDRSS spread-spectrum modem VHDL source/IP core

• TDRSS spread-spectrum digital modem
• BPSK and SQPN spread-spectrum modulation
• Convolutional/Viterbi error correction: K=7 Rate ½
• Programmable 1023- (forward command link) or 2047-chip (return mode 2 link) periodic I and Q Gold codes
• Programmable bit rates from 1 to 150 Kbits/s on each channel. Two independent bit synchronizers to acquire and track each channel bit stream.
• 120-bin parallel code search for fast code acquisition. False code lock prevention.
• Built-in Bit Error Rate measurement for PRBS-11 test sequences.
• Demodulation performances: within 1.5 dB from theory at threshold Eb/No of 2 dB.
• Demodulated bits encapsulated in UDP frames and sent out to the LAN. Support for IGMPv2 multicast addressing.

The entire VHDL source code is deliverable. Unlimited license to make and use. See the complete licensing terms at comblock.com/download/softwarelicense.pdf