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Average acquisition time for SSMA channels

机译:SSMA通道的平均采集时间

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摘要

The acquisition time performance of a two-user spread-spectrumnmultiple-access system is examined. The acquisition is accomplishednusing conventional (single-user) correlating/energy-detectingnacquisition methods. The intent of the analysis is to determine how muchnperformance penalty is incurred because of the presence of thenmultiple-user interference. The analysis indicates that for goodnspreading codes the performance degradation is not severe when thenuser's amplitudes are all similar. However, in the presence ofnsignificant near/far power differences, the acquisition time increasesndramatically. This suggests the need for acquisition methods whichnexplicitly account for the presence of multiple users
机译:研究了两用户扩频多路访问系统的采集时间性能。使用常规(单用户)关联/能量检测采集方法完成采集。该分析的目的是确定由于存在多用户干扰而导致多少性能损失。分析表明,当用户幅度都相似时,对于扩展码,性能下降并不严重。但是,在存在明显的近/远功率差的情况下,采集时间急剧增加。这表明需要一种能够明确说明存在多个用户的获取方法

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