硬判决 1. According to the characteristics of MAI in CDMA systems, a multi user detector is designed by a new hard decision parallel decision algorithm for MAI cancellation. 针对多址干扰信号的特点 ,研究了一种改进的硬判决并行干扰多用户检测器。 2. Finally the capability of soft and hard decis...
硬判决译码 1. Analyzed and si mulated the performance of the Viterbihard-decision decodingalgorithm in the AWGN(Additive White Gaussian Noise). 针对目前尚无系统分析差分跳频(DFH:D ifferential Frequency Hopp ing)方法的问题,证明了差分跳频具有等效卷积码的结构,并通过实例对差分跳频的等效卷积码结构进行了...
Abstr act:Weighted one bit hard combination for cooperative spectrum sensing is proposed in this paper.Two thresholds are adopted to divide the possible energy value into three weighted regions. If the energy value falls into the corresponding region,it will be judged as“1”,no information or“0...
译码器利用解调器送入的 Q进制量化序列或模拟序列,并利用码的代数结构译码的方法称为软判决译码,它是一种概率译码方法。在高斯白噪声信道中,软判决译码比硬判决要高 2分贝的编码增益,而在以突发错误为主的信道,如短波、散射、有线等信道中则要高 8分贝,因而有较大的实用价值。 分组码的软判决译码分为两类:一...