Channel Estimation Scheme for a RAKE Receiver with Fractional Sampling in IEEE802.11b WLAN System
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概要
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The IEEE802.11b WLAN standard employs direct-sequence/spread-spectrum (DS/SS) modulation. With a fractional sampling RAKE receiver, it is possible to achieve diversity and reduce the BER in DS/SS communication. In order to realize the diversity through fractional sampling, the impulse response of the channel must be estimated. In this paper, a channel estimation scheme for a RAKE receiver with fractional sampling in IEEE802.11b WLAN system is investigated through a computer simulation and an experiment. In order to estimate the impulse response of the channel, a pseudo-inverse matrix with a threshold is employed. Numerical results indicate that the channel can be estimated with an optimum threshold in both the simulation and the experiment.
著者
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IMAOKA Yu
Dept. of Electronics and Electrical Engineering, Keio University
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OBATA Hiroshi
Dept. of Electronics and Electrical Engineering, Keio University
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SUZUKI Yohei
Dept. of Electronics and Electrical Engineering, Keio University
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SANADA Yukitoshi
Dept. of Electronics and Electrical Engineering, Keio University
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