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This paper proposes a novel systematic optimized comparison algorithm for LDPC codes with arbitrary code lengths. Based on the presented algorithm, we also design a corresponding decoder architecture which has a short comparison delay time of lceillog2(n - 1)rceil and a very low comparator complexity of ntimeslceillog2(n - 1)rceil, where n is the input number to CNU. Besides, the proposed design is...
This paper proposes a novel systematic optimization algorithm for comparison operations required by a check node unit (CNU) in LDPC decoding, given any input number Nin. The algorithm can automatically synthesize an optimized fast comparison operations that guarantees a shortest comparison delay time of [log2 (Nm-1)]Tcmp and a minimized total number of two-input comparators, where Tcmp is the delay...
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