不完全码同步对DS/DPSK扩频接收机窄带干扰抑制的影响

MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's Pub Date : 1986-10-01 DOI:10.1109/MILCOM.1986.4805740

S. Goldberg, R. Iltis

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引用次数: 1

摘要

研究了非相干直接序列扩频通信中不完全同步对预测误差干扰抑制滤波器性能的影响。将二进制DPSK数据调制与直接序列扩频(DSSS)结合使用时的误码率(BER)分析作为性能指标。伪噪声代码跟踪采用一阶非相干延时锁环。得到了DS/DPSK系统在码跟踪误差固定值下的条件误码率结果[1]。然后通过将条件误码率表达式平均于码跟踪误差的概率密度函数来计算系统的平均误码率。结果包括单频衰落和窄带高斯干扰对系统整体性能的影响。

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Imperfect Code Synchronization Effects on Narrowband Interference Rejection in a DS/DPSK Spread Spectrum Receiver

The impact of imperfect synchronization on the performance of prediction-error interference rejection filters in noncoherent direct-sequence (DS) spread spectrum communications is considered. Bit error rate (BER) analysis of binary DPSK data modulation used in conjuction with direct-sequence spread spectrum (DSSS) is used as a performance measure. A first order noncoherent delay-lock loop is used for the pseudonoise code tracking. Conditional BER results for the DS/DPSK system for fixed values of the code tracking error are obtained [1]. The average BER of the system is then evaluated by averaging the conditional BER expressions over the probability density function of the code tracking error. Results include the effects of both a single fading tone and narrowband gaussian interferer on the overall system performance.

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MILCOM 1986 - IEEE Military Communications Conference: Communications-Computers: Teamed for the 90's

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