Journal of Beijing University of Posts and Telecommunications

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JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2011, Vol. 34 ›› Issue (1): 121-125.doi: 10.13190/jbupt.201101.121.yangzh

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Frequency Domain Recursive Least Squares Realization of  UWB Blind Channel Estimation

  

  • Received:2010-05-02 Revised:2010-06-10 Online:2011-02-28 Published:2011-02-28

Abstract:

In order to make the ultrawideband (UWB) signal received efficiently and stably, an ultrawideband channel estimation algorithm with low complexity based on the features in frequency domain is proposed. With the help of recursive least squares, the blind channel estimating is achieved based on the onedimensional statistical stationary feature of time hoppingpulse position modulation signal. The algorithm is of low complexity. Simulation shows the promising gain reaches 3dB when the bit error rate is 10-4, compared to maximum likelihood blind channel estimation. The algorithm can perform estimations for multiple channels, and there is no ambiguity in both the amplitude and the phase of the estimated channel.

Key words: ultrawideband, channel estimate, frequency domain, recursive least squares

CLC Number: