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文件名称:Channel Estimation for Adaptive
文件大小:303KB
文件格式:PDF
更新时间:2012-05-02 12:21:01
Channel Estimation Adaptive
Abstract—Frequency-domain equalization (FDE) is an effective
technique for high-rate wireless communications because of
its reduced complexity compared to conventional time-domain
equalization (TDE). In this paper, we consider adaptive FDE for
single-carrier (SC) systems with explicit channel and noise-power
estimation. The channel response is estimated in the frequency
domain following two different approaches. The first operates
independently on each frequency bin while the second exploits
the fading correlation across the signal bandwidth. Leastmean-
square (LMS) and recursive-least-square (RLS) algorithms
are employed to update the channel estimates. The noise power
is estimated using a low-complexity algorithm based on ad hoc
reasoning.
Compared to other existing receivers employing adaptive FDE,
the proposed schemes have better error-rate performance and can
be used even in the presence of relatively fast fading.