为了在数字芯片上实现TURBO码译码时，降低硬件实现代价，提高运算速度，针对LOGMAP算法，研究了turbo码的译码过程中接收信号、路径度量值，对数似然比的量化方法，并分析了量化方法对译码性能的影响。-In order to achieve in the digital TURBO decoding chip, the lower hardware costs, improve processing speed, for LOGMAP algorithm to study the proces