LIAO Can-hui, TU Shi-long, WAN Jian. Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals[J]. 2011, 32(8): 111-117.
LIAO Can-hui, TU Shi-long, WAN Jian. Iterative algorithm on single-channel blind separation and decoding of co-frequency modulated signals[J]. 2011, 32(8): 111-117.DOI:
An algorithm was proposed to exploit the codes in iterative single-channel blind separation and decoding of two co-frequency modulated signals with long-constraint channel codes.The output log-likelihood ratio(LLR) values of the decoder were used as a prior LLR fed back to the separator to improve the separation performance.Special emphases were laid on soft input soft output blind separation
maximum a posteriori(MAP) decoding and LLR interaction between separator and decoder.Simulation results show that the proposed algorithm can make a significant improvement in per-formance over the algorithms without iterations.For BPSK signals with(2
1
6) convolutional codes and random inter-leaving
a gain of about 2dB in signal-noise ratio can be obtained after two iterations.