| 直扩通信系统抗窄带干扰技术研究与仿真 |
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| 引用本文： | 姜恩光,张福洪.直扩通信系统抗窄带干扰技术研究与仿真[J].电子器件,2013,36(1):73-75. |
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| 作者姓名： | 姜恩光 张福洪 |
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| 作者单位： | 杭州电子科技大学通信工程学院,杭州,310018 |
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| 摘 要： | 针对直扩通信系统中的强窄带干扰问题,通过Matlab/Simulink搭建完整的直扩通信系统模型.在此基础上分析了一种改进型的重叠变换干扰抑制算法.该算法利用重叠加窗降低了因数据截断引起的频谱泄漏,同时也减少了因加窗引入的信噪比损耗.计算机仿真分析证明,该算法可有效抑制强窄带干扰,改善系统的误码性能,提高系统的抗干扰能力.
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| 关 键 词： | 直接序列扩频 窄带干扰抑制 重叠变换 快速傅立叶变换 |
Analysis of narrow-band interference suppression in DSSS |
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| JIANG Enguang
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ZHANG Fuhong.Analysis of narrow-band interference suppression in DSSS[J].Journal of Electron Devices,2013,36(1):73-75. |
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| Authors: | JIANG Enguang ZHANG Fuhong |
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| Affiliation: | *(College of Communication Engineering,Hangzhou Dianzi University,Hangzhou 310018,China) |
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| Abstract: | Building a complete model of direct sequence spread spectrum system(DSSS) by simulink to discuss the strong narrow-band interference
(NBI).Analyse an improved interference suppression algorithm with lapped transform.Overlap windowing is adopted to reduce the spectral leakage associated with truncation and lessen the SNR degradation due to windowing. Simulation results show that this algorithm can effectively suppress the strong NBI,improve the BER performance and the interference suppression capability of the system. |
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| Keywords: | DSSS NBI suppression lapped transform FFT |
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