| 一种应用于RAKE接收机的高效率多径搜索器的设计与实现 |
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| 引用本文： | 王丽芳,杨玉庆,谈熙,闵昊.一种应用于RAKE接收机的高效率多径搜索器的设计与实现[J].复旦学报(自然科学版),2010(6). |
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| 作者姓名： | 王丽芳 杨玉庆 谈熙 闵昊 |
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| 作者单位： | 复旦大学专用集成电路与系统国家重点实验室; |
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| 基金项目： | 国家高技术研究发展计划(863计划)重点(SQ2008AA01ZX1480432)资助项目 |
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| 摘 要： | 提出了一种低复杂度、低硬件开销的多径搜索器结构.利用扰码匹配滤波器和峰值检测方法完成初步的多径搜索;引入一种假径搜索方法来代替非相干多帧平均的方法,提高了多径搜索的正确性,同时避免了采用大量存储单元.仿真结果表明:在给定的瑞利多径衰落信道条件和信号能量比条件下,该多径搜索器可以将搜索错误率保持在15%以下,较2帧的非相干多径搜索器,错误率减小5%,同时面积减少31.19%;较4帧的非相干多径搜索器,错误率减小1%,同时面积减少58.42%.
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| 关 键 词： | RAKE接收机 多径搜索 宽带码分多址 |
Design and Implementation of an Efficient Multipath Searcher for RAKE Receiver |
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| WANG Li-fang,YANG Yu-qing,TAN Xi,MIN Hao.Design and Implementation of an Efficient Multipath Searcher for RAKE Receiver[J].Journal of Fudan University(Natural Science),2010(6). |
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| Authors: | WANG Li-fang YANG Yu-qing TAN Xi MIN Hao |
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| Institution: | WANG Li-fang,YANG Yu-qing,TAN Xi,MIN Hao(State Key Laboratory of ASIC and System,Fudan University,Shanghai 201203,China) |
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| Abstract: | A multipath searcher of low complexity and low hardware expense is presented.The primary multipath searching is accomplished by the scrambling code matched filter and the peak detector.A new false path searching method is proposed instead of the non-coherent averaging method.The new method reduces the memory expense while keeping a low false alarm probability.The result of simulation shows that for the given channel model and signal energy ratio,the false alarm probability of the proposed multipath searcher... |
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| Keywords: | RAKE receiver multipath search WCDMA |
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