电子科技大学通信抗干扰技术国家级重点实验室,四川,成都,610054
网络出版:2005-04-25,
纸质出版:2005
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宋立军, 唐友喜, 李少谦, 等. 二维扩频系统中时频码片级差分检测的性能分析[J]. 电子学报, 2005,33(4):602-607.
SONG Li-jun, TANG You-xi, LI Shao-qian, et al. Analysis of the Performance of Time-Frequency Chip-Level Differential Detection in Two-Dimension Spread Spectrum System[J]. Acta Electronica Sinica, 2005, 33(4): 602-607.
时变频率选择性衰落信道中
针对二维扩频系统提出了一种时频码片级差分检测方法
并进行了误码率分析
同时进行了仿真验证.分析和仿真结果表明
时频码片级差分检测同时具有抵抗信道频率选择性和时间选择性衰落的能力
在选择性衰落信道中的性能优于平坦衰落信道中的性能.通过性能对比发现
时频码片级差分检测相对多载波扩频码片级差分检测能够更加有效地降低了载波间干扰对系统性能的影响.
In time-varying frequency-selective fading channel
a time-frequency chip-level differential detection (TF-CLDD) in two-dimension spread spectrum is proposed.The bit error rate (BER) performance of TF-CLDD is analyzed
and the theoretical results are evaluated by simulation.The results of research indicate that TF-CLDD exhibits a performance to make the system resistant to both frequency-selective and time-selective fading
and it exhibits a better performance in selective fading channels than that in flat fading channels.We compare the performance of TF-CLDD with that of multicarrier spread spectrum chip-level differential detection (MC-SS-CLDD)
and the TF-CLDD effectively reduces the effect of intercarrier interference on the system.
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