最佳接收机误码率的两种估算观点

摘要

Many textbooks or papers presented the analysis of the total error probability of the optimum receive system. They all depend on point of the statistical view that the noise in the channel is band unlimited white noise of Gaussian and to assume the two sided power spectrum density of the noise is/2. But from the filtering point, the band wide of the channel is limited which makes the white noise of Gaussian into band limited. In order to determine the error probability of the optimum receiver at two standpoints, the paper discussed this problem on two standpoints and obtained uniform result. It is helpful in the better understanding digital signal optimum reception.%很多教材都是从统计的观点讨论分析了最佳接收机的误码率问题，统计的观点认为信道的噪声是非带限的高斯白噪声，分析的过程也假设接收机非带限。但是从实际和滤波的观点来看，任何形式的接收机都是频带受限的，进入到接收机检测器的噪声频带也会受限。文中基于统计和滤波的观点，讨论了最佳接收机的误码率问题，得出的结论相同，但是分析的过程体现了两者的不同之处，有助于更好的了解数字信号的最佳接收。