低密度奇偶校验码及其应用前景

Low Density Parity-Check Codes and Its Application Foreground

低密度奇偶校验码(LDPC)以二分图表示,译码采用迭代方式。它对具有相同节点度数分布的码集合进行渐近分析,然后通过密度进化,计算出置信传播算法的门限值或传输容量。LDPC可应用于新一代高速数据电台或参与系统ARQ和信道估计。

The LDPC was expressed by bipartite graph and decoded by iteration, The code collections, which contained equivalent node readings, were asymptotically analyzed. And then, through density evolution, the threshold value or transmission capacity of confidence transmitting algorithm was calculated. LDPC codes could be applied to the new generation of high rate data radio or design of the ARQ system and channel estimation.