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Time Delay Estimation of Multipath in CDMA Chip |
Wang Wei; Xiong Jin-yu; Zhu Zhong-liang |
National Key Laboratory of Signal Processing of IETTC Chengdu 610041 China |
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Abstract An effective algorithm is proposed to estimate multipath time delays in a CDMA chip under low SNR environment. Firstly, a power delay profile of multipath is constructed which can restrain effect of noise. Then the estimation algorithm that has super resolution is deduced based on the function. A detailed estimation process and analysis of the performance of this approach are given. Finally, comparsion and performance simulation demonstrate that the method can effectively estimate the delay of multipath in a CDMA chip under low SNR environment.
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Received: 18 May 2003
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