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2008

Synchronization, Channel Estimation, and Equalization in MB-OFDM Systems

11 years 8 months ago
Synchronization, Channel Estimation, and Equalization in MB-OFDM Systems
Abstract-- This paper addresses preamble-based low complexity synchronization, channel estimation and equalization for Zero-padded (ZP) MB-OFDM based UWB systems. The proposed synchronization method consists of sync detection, coarse timing estimation, fine timing estimation, and oscillator frequency offset estimation. The distinctive features of MBOFDM systems and the interplay between the timing and carrier frequency hopping at the receiver are judiciously incorporated in the proposed synchronization method. In order to apply the low complexity one-tap frequency-domain equalizer, the required circular convolution property of the received signal is obtained by means of an overlap-add method after the frequency offset compensation. The proposed low complexity channel estimator for each band is developed by first averaging the over-lapadded received preamble symbols within the same band and then applying time-domain least-squares method followed by the discrete Fourier transform. We dev...
Yinghui Li, Hlaing Minn, R. M. A. Rajatheva
Added 16 Dec 2010
Updated 16 Dec 2010
Type Journal
Year 2008
Where TWC
Authors Yinghui Li, Hlaing Minn, R. M. A. Rajatheva
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