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讨论了在Ｎａｋａｇａｍｉ多径衰落条件下，利用等增益分集接收的宽带ＤＳ／ＣＤＭＡ系统的抗衰落性能，并将之与最大比合并分集接收进行比较，提出了一种计算等增益分集接收性能的方法，它避开了目前Ｎａｋａｇａｍｉ分布随机变量和的概率密度函数难以求出这一困难，采用递归求衰落ｎ阶中心矩的方法，有效地解决了等增益分集接收性能的理论分析问题．理论分析和数值计算结果均表明，在ＤＳ／ＣＤＭＡ系统中采用等增益分集接收，可在技术复杂性大大降低的条件下获得接近最大比合并分集的性能．
The anti-fading performance of a wideband DS / CDMA system using equal gain diversity reception under Nakagami multipath fading conditions is discussed and compared with the maximum ratio combining diversity reception. A method of calculating equal gain diversity reception performance is proposed , Which avoids the difficulty of obtaining the probability density function of the random sum of random distributions of Nakagami distributions. The method of recursively finding the n-th order moment of fading is adopted to effectively solve the theoretical analysis problem of equal gain diversity reception performance. Both theoretical analysis and numerical calculation show that equal gain diversity reception in DS / CDMA system can achieve the performance of near maximum ratio combining diversity under the condition that the technical complexity is greatly reduced.