| Paper: | 03-P1.12 (ICASSP 2003 Paper) | ||
| Session: | ICASSP 2003 Papers | ||
| Time: | Tuesday, May 18, 13:00 - 15:00 | ||
| Presentation: | Poster (ICASSP 2003 Presentation) | ||
| Topic: | ICASSP 2003 Papers: ICASSP 2003 Papers | ||
| Title: | A PERFORMANCE AND COMPLEXITY COMPARISON OF AUTO-CORRELATION AND CROSS-CORRELATION FOR OFDM BURST SYNCHRONIZATION | ||
| Authors: | Andrew Fort; Interuniversity Micro-Electronics Center (IMEC) | ||
| Jan-Willem Weijers; Interuniversity Micro-Electronics Center (IMEC) | |||
| Veerle Derudder; Interuniversity Micro-Electronics Center (IMEC) | |||
| Wolfgang Eberle; Interuniversity Micro-Electronics Center (IMEC) | |||
| Andre Bourdoux; Interuniversity Micro-Electronics Center (IMEC) | |||
| Abstract: | A symbol timing synchronization scheme is critical in the design of an OFDM receiver. Large timing errors can result in a loss of orthogonality between subcarriers, ISI and severe bit error degradation. To minimize this degradation, standards incorporate preambles suitable for two kinds of synchronization algorithms: auto-correlation and cross-correlation. Unfortunately, the performance and complexity tradeoffs between these algorithms have not been well explored. To address this problem, we have built an FPGA implementation of a synchronization system using both auto-correlation and cross-correlation. Based on our results, in this paper we propose a novel cross-correlation synchronizer and hardware architecture. We then compare its performance and complexity to auto-correlation algorithms for HiperLAN/2 and IEEE 802.11a preambles. | ||
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