Ma Zhuo, Du Shuan-Yi, Wang Xin-Mei. Efficient Implementing of LDPC Decoding Algorithm Based on Quantization[J]. Journal of Electronics & Information Technology, 2011, 33(9): 2273-2277. doi: 10.3724/SP.J.1146.2011.00041
Citation:
Ma Zhuo, Du Shuan-Yi, Wang Xin-Mei. Efficient Implementing of LDPC Decoding Algorithm Based on Quantization[J]. Journal of Electronics & Information Technology, 2011, 33(9): 2273-2277. doi: 10.3724/SP.J.1146.2011.00041
Ma Zhuo, Du Shuan-Yi, Wang Xin-Mei. Efficient Implementing of LDPC Decoding Algorithm Based on Quantization[J]. Journal of Electronics & Information Technology, 2011, 33(9): 2273-2277. doi: 10.3724/SP.J.1146.2011.00041
Citation:
Ma Zhuo, Du Shuan-Yi, Wang Xin-Mei. Efficient Implementing of LDPC Decoding Algorithm Based on Quantization[J]. Journal of Electronics & Information Technology, 2011, 33(9): 2273-2277. doi: 10.3724/SP.J.1146.2011.00041
An implementing scheme of sum-product algorithm is proposed based on 2-dimation broken line approach, which avoids the look-up table with size related to the exponential of the number of quantization bits and reduces the memory consumption of the decoder. Then, an algorithm called second-minimum value corrected min-sum algorithm is proposed based on the implementing scheme proposed above. The algorithm use three 2-dimension piecewise approach to correct the min-sum algorithm and its performance is very close to that of the floating point sum-product algorithm. The correction process of this algorithm just includes simple arithmetic and logic operations, which is easy to be implemented by FPGA.