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Proceedings Paper

Comparison of channel estimation techniques for OFDM systems in frequency-selective fast-fading channels
Author(s): Hanqing Xing; Defeng Huang; Zucheng Zhou
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Paper Abstract

Channel estimations of many OFDM systems are accomplished by using pilot signals. Two kinds of pilots, frequency-domain pilots and time-domain pilots, are investigated. The performance of these methods in Rayleigh frequency selective channel is simulated. The effects of varying channels on these methods, especially on the time-domain pilot channel estimation technique, are examined. From the results, it can be concluded that when the channel is a slow fading channel time-domain method performs much better than frequency-domain method, but when the channel is a fast fading channel, the performance of time-domain technique is impacted more severely, and is no better than that of frequency-domain technique.

Paper Details

Date Published: 18 October 2001
PDF: 8 pages
Proc. SPIE 4586, Wireless and Mobile Communications, (18 October 2001); doi: 10.1117/12.445230
Show Author Affiliations
Hanqing Xing, Tsinghua Univ. (China)
Defeng Huang, Tsinghua Univ. (China)
Zucheng Zhou, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4586:
Wireless and Mobile Communications
Hequan Wu; Jari Vaario, Editor(s)

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