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Journal of the Korean Institute of Electromagnetic and Science 2006;6(1):10-17.
RAKE Receiver for Time Division Synchronous CDMA Mobile Terminal
Yang Xiao1, Kwang-Jae Lee2, Moon-Ho Lee3
1Institute of Information Science, Beijing Jiaotong University
2Dept. of Multimedia, Information and Telecommunication, Hanlyo University
3Dept. of Information and Communication, Chonbuk National University
Abstract
For the sake of the potential ability of overcoming interference in TD-SCDMA(time division-synchronous code division multiple access) systems, pilot signal is adopted, but the presented TD-SCDMA protocol has not considered the Rake technique for their mobile terminals. This paper developed a RAKE receiver algorithm and an implementation circuit, which make use of the pilot signal in the burst structure of the TD-SCDMA base station to estimate main channel parameter(channel delays) in the downlink of TD-SCDMA wireless network. The algorithm can reduce multipath interference for the mobile units in multiusers' case. Theoretic performance analysis presented in the paper and computer simulations show that there is a range of BER for Rake receiver and confirm that the proposed RAKE receiver algorithm achieved a better performance under multipath fading propagation and multiusers conditions.
Key words: TD-SCDMA RAKE Receiver Schemes, Channel Parameters Estimation, Wireless Communication Systems
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