Adaptive quantization for low-density-parity-check decoders
Cha-Hao Chung, Yeong-Luh Ueng, Ming-Che Lu, Mao‐Chao Lin · 2010
For the implementation of low-density parity-check (LDPC) decoders, the associated error performance and the complexity are significantly affected by the number of quantization bits used. In this paper, we propose an adaptive quantization scheme, which uses different quantization schemes at different iteration numbers based on a fixed number of quantization bits. Simulation results show that the proposed adaptive quantization can reduce the number of quantization bits without error performance degradation.