Convolutional Versus LDPC and Turbo Codes on the Rayleigh Fading Channel
AdvisorRyan, William E.
Marcellin, Michael W.
AffiliationUniversity of Arizona
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AbstractWe consider the performance of low-density parity-check (LDPC) codes, turbo codes and convolutional codes over the binary-input AWGN channel with flat Rayleigh fading. LDPC and turbo codes are capacity-approaching codes for long codewords. For short and medium codewords we seek to determine if they still outperform the industry-standard memory-6, rate-1/2 convolutional code. For a fixed SNR, the probability of error for the codes of interest are plotted as a function of codelength. We find that for very short codewords, the convolutional code performs best.
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