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Based on layered decoding and semi-parallel structure, a novel architecture of multi-rate QC-LDPC decoder is proposed in this paper. It can support any code rates without any changes in hardware to achieve higher hardware utilization. The update of current layer and the comparison of next layer are processed simultaneously to improve the throughput. The check-to-variable messages are stored indirectly...
Turbo code has been used by multiple communication standards due to its performance near Shannon limit. However, its decoding algorithm is complicated. Through the research on Turbo code, a novel design of Turbo decoder is presented in this paper. Turbo code is decoded by the Min-Sum decoding algorithm of LDPC code, which is a low complicated decoding algorithm. Moreover, messages are stored compressively,...
Through the research on the decoding algorithm of low-density parity-check (LDPC) code, a low complexity decoding algorithm suitable for quasi-cyclic LDPC (QC-LDPC) code is proposed in this paper. The algorithm adopts layered decoding (LD), and the sub-minimum is replaced by the sum of an optimal correction factor and the minimum during the process of the check nodes update. Therefore, it is not required...
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