| 基于软件无线电的直序扩频码元判决算法 |
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| 引用本文： | 宫二玲,王跃科,杨俊.基于软件无线电的直序扩频码元判决算法[J].系统工程与电子技术,2003,25(12):1460-1462. |
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| 作者姓名： | 宫二玲 王跃科 杨俊 |
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| 作者单位： | 国防科技大学机电工程与自动化学院,湖南,长沙,410073 |
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| 摘 要： | 码元判决算法的设计是扩频序列能被正确接收的关键。提出了一种基于软件无线电技术,且考虑初始相位的影响,对直接序列扩频的中频采样信号进行码元判决的算法。该算法有较高的扩频处理增益,适用于信噪比极低(-20dB以下),且对系统的体积及功耗有严格限制的情况。仿真及实验表明,该算法运算简便,在恶劣环境下仍具有较低的误码率。
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| 关 键 词： | 软件无线电 采样信号 码元判决 扩频通信 |
| 文章编号： | 1001-506(2003)12-1460-03 |
| 修稿时间： | 2002年6月27日 |
Bit decision algorithm for DS/SS based on software radio |
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| GONG Er-ling,WANG Yue-ke,YANG Jun.Bit decision algorithm for DS/SS based on software radio[J].System Engineering and Electronics,2003,25(12):1460-1462. |
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| Authors: | GONG Er-ling WANG Yue-ke YANG Jun |
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| Abstract: | The design of bit decision algorithm is the key to the correct receiving of the direct sequence spread spectrum (DS/ SS) . An algorithm for bit decision considering the influence of initial phase is provided based on software radio technology. The algorithm has a high gain of spread spectrum processing and is applicable to the case of a very low (lower than - 20dB) signal-to-noise ratio and the severe limitation on system size and power. The simulation test shows that its computation is simple and its BER is low in a very harsh environment. |
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| Keywords: | software radio sampling signal bit decision spread spectrum communication |
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