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本文利用信号波形所提供的有关信道干扰中信息的统计特性,将文献[1][2]提出的广义正交码的硬判决译码推广为软判决译码,提出了四种软判决译码算法。应用反相信号通过AWGN信道的计算机模拟结果表明:采用软判决译码后,在同样的信噪比下误码率和误字率均大为降低。
In this paper, the statistical properties of information in channel interference provided by signal waveforms are used to generalize the hard decision decoding of generalized orthogonal codes proposed by [1] [2] into soft decision decoding. Four kinds of soft decision decoding algorithm. Computer simulation results of AWGN channels using inverted signals show that the bit error rate and the error rate are greatly reduced at the same signal-noise ratio after soft-decision decoding.