A Low-Complexity Synchronization Design for MB-OFDM Ultra-Wideband Systems
Zhenzhen Ye
Chunjie Duan
Orlik, P.
Jinyun Zhang
Dept. of Electr., Rensselare Polytech. Inst., Troy, NY;
This paper appears in: Communications, 2008. ICC '08. IEEE International Conference on
Publication Date: 19-23 May 2008
On page(s): 3807-3813
Location: Beijing,
ISBN: 978-1-4244-2075-9
INSPEC Accession Number: 10041772
Digital Object Identifier: 10.1109/ICC.2008.715
Current Version Published: 2008-05-30
Abstract
In this paper, we investigate the low-complexity synchronization design for multi-band orthogonal-frequency-division-multiplexing (MB-OFDM) ultra-wideband (UWB) systems. We propose a unified synchronizer design based on auto-correlation-function. The key component in the proposed synchronizer is a parallel signal detector structure in which multiple auto-correlation units are instantiated and their outputs are shared by other functional units in the synchronizer, including time-frequency pattern detection, symbol timing, carrier frequency offset estimation and correction and frame synchronization. We show that, via analysis and simulations, such a design achieves not only a low computation cost which makes it attractive in implementation, but also equal or better performance compared to the cross-correlation based designs.
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