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Combined Horizontal-Vertical Serial BP Decoding of GLDPC Codes with Binary Cyclic Codes
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  • Combined Horizontal-Vertical Serial BP Decoding of GLDPC Codes with Binary Cyclic Codes
  • Combined Horizontal-Vertical Serial BP Decoding of GLDPC Codes with Binary Cyclic Codes
저자명
정규혁,Chung. Kyuhyuk
간행물명
한국통신학회논문지. The journal of Korea Information and Communications Society. 무선통신
권/호정보
2014년|10호|pp.585-592 (8 pages)
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한국통신학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

It is well known that serial belief propagation (BP) decoding for low-density parity-check (LDPC) codes achieves faster convergence without any increase of decoding complexity per iteration and bit error rate (BER) performance loss than standard parallel BP (PBP) decoding. Serial BP (SBP) decoding, such as horizontal SBP (H-SBP) decoding or vertical SBP (V-SBP) decoding, updates check nodes or variable nodes faster than standard PBP decoding within a single iteration. In this paper, we propose combined horizontal-vertical SBP (CHV-SBP) decoding. By the same reasoning, CHV-SBP decoding updates check nodes or variable nodes faster than SBP decoding within a serialized step in an iteration. CHV-SBP decoding achieves faster convergence than H-SBP or V-SBP decoding. We compare these decoding schemes in details. We also show in simulations that the convergence rate, in iterations, for CHV-SBP decoding is about $frac{1}{6}$ of that for standard PBP decoding, while the convergence rate for SBP decoding is about $frac{1}{2}$ of that for standard PBP decoding. In simulations, we use recently proposed generalized LDPC (GLDPC) codes with binary cyclic codes (BCC).