进一步考虑在存在多用户干扰条件下，该系统性能随用户数的增加而下降。

So the scheme employing PPM is preferred and we further find when MUI(Multi User Interference) is considered the performance degrades when the number of users increases.

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在DS - CD ma系统中，联合译码的迭代多用户检测是克服多址干扰增加系统容量的有效方法。

It has been proved that iterative multiuser detection with decoding is a very effective way to increase system capacity in DS-CDMA systems.

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该智能天线在每个阵元输出带有时域均衡器，可以在多径环境下有效消除多径干扰和多用户干扰，提高信噪比。

Tore duce effective the multipath disturbance and multi-user interference and improve the SNR, time-domain equalizer is employed at the output of each array element of smart antenna.

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