COM-1827SOFT PCM/FM DEMOD, VHDL source/IP core

The COM-1827SOFT_PCMFM_DEMOD is a non-coherent demodulator for PCM/FM continuous phase modulation with flexible programmable features

• Programmable modulation index h [0.5 to 0.8]
• Programmable symbol rate up to fclk/4, where fclk is the processing clock frequency
• Excellent BER performance using multisymbol detection and 4-state trellis decoding (SOVA). 4-bit soft-decision demodulator output for best FEC decoder performance
• BER < 10-5 at 9.2dB Eb/No
• AFC for carrier frequency acquisition of 10% of symbol rate
• Acquisition threshold < 2dB Eb/No
• Ancillary functions: BER tester, Matlab code for generating sampled stimulus waveforms
• Tested on Xilinx 7-series FPGA, but portable to other FPGA types

The entire VHDL source code is deliverable.
Unlimited license to make and use. See the complete licensing terms at comblock.com/download/softwarelicense.pdf
Modulator code is sold separately: see com-1827SOFT_CPM_MOD