Compensation Technique of Min-Sum Shuffled LDPC decoding algorithm
| Autor: | Mei -Yu Chen, 陳美宇 |
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| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 電機學院IC設計產業專班 97 Shuffled belief propagation (BP) algorithm for the decoding of low-density parity-check (LDPC) codes achieves a remarkable error performance and fast convergence. Nevertheless, it seems to be too complex for hardware implementation. The shuffled BP algorithm can be simplified by using the min-sum approximation, namely the min-sum shuffled BP algorithm; however, the min-sum shuffled BP algorithm suffers from remarkable performance degradation. In this thesis, to solve this problem, we explore some compensation techniques for the min-sum shuffled BP algorithm, including 1D-, 2D-normalization/-offset static schemes and the dynamic scaling approach. Simulations show that the compensated min-sum shuffled BP algorithm achieves the performance very close to that of the original shuffled BP algorithm in IEEE 802.11n system. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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