新型离散小波系统的综合性能评价

Comprehensive Performance Evaluation of New Wavelet System

在数字通信系统中,系统的误码率(BER)和带宽效率(bandwidth efficiency)是数字通信系统的两个最重要的系统性能评判指标。传统的数字通信评价方法只能对通信系统中误码率或带宽效率中的一项性能指标进行分析,抉择出较优系统,这样往往忽略了另一项重要的系统性能评判指标。本文将引用一种新的数字通信系统总体评价方法,这种评价方法能够综合考虑系统误码率和带宽效率,对OFDM,DWT-OFDM以及一种新型数字通信调制系统进行综合性能评判。

In the digital communication system, the system bit error rate （BER） and the bandwidth efficiency are the two most important indicators of system performance evaluation to a digital communications system. Traditional evaluation methods for digital communication systems in general condsiders either communication error rate or bandwidth efficiency in a performance analysis, then it chooses the best system of which they select,this method always overlooks another important indicator of system performance evaluation.This article will refer to a new overall evaluation which can beconsider the system bit error rate and bandwidth efficiency to the digital communication system. Considering both the system bit error rate （BER） and the bandwidth efficiency for OFDM,DWT-OFDM and a new modulationdigital communication system, a better choice of overall performance communication system can be selected.