Protograph-based non-binary low-density parity-check (ldpc) codes with ultra-sparse parity-check matrices are compared with binaryldpc and turbo codes (TCs) from space communication standards. It is shown that larger...
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Protograph-based non-binary low-density parity-check (ldpc) codes with ultra-sparse parity-check matrices are compared with binaryldpc and turbo codes (TCs) from space communication standards. It is shown that larger coding gains are achieved, outperforming the binary competitors by more than 0.3?dB on the additive white Gaussian noise channel (AWGN). In the short block length regime, the designed codes gain more than 1?dB with respect to the binary protograph ldpccodes recently proposed for the next generation up-link standard of the Consultative Committee for Space Data Systems. Copyright (c) 2012 John Wiley & Sons, Ltd.
It is well known that non-binary ldpc codes outperform the BER performance of binaryldpccodes for the same code length. The superior BER performance of non-binarycodes comes at the expense of more complex decoding ...
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ISBN:
(纸本)9781479903573
It is well known that non-binary ldpc codes outperform the BER performance of binaryldpccodes for the same code length. The superior BER performance of non-binarycodes comes at the expense of more complex decoding algorithms that demand higher computational power. In this paper, we propose parallel signal processing algorithms for performing the FFT-SPA and the corresponding decoding of non-binary ldpc codes over GF(q). The constraints imposed by the complex nature of associated subsystems and kernels, in particular the Check Nodes, present computational challenges regarding multicore systems. Experimental results obtained on GPU for a variety of GF(q) show throughputs in the order of 2 Mbps, which is far above from the minimum throughput required, for example, for real-time video applications that can benefit from such error correcting capabilities.
Low-Density Parity-Check(ldpc) Code has become one of the best coding technologies at present because of its low complexity iterative decoding algorithm and its performance with further close to the S
Low-Density Parity-Check(ldpc) Code has become one of the best coding technologies at present because of its low complexity iterative decoding algorithm and its performance with further close to the S
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