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Effects of correlated shadowing and multipath fading on OFDM systems with postdetection-combining-based macrodiversity

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4 Author(s)
Wooncheol Hwang ; tDepartment of Inf. & Commun., Kwangju Inst. of Sci. & Technol., Gwangju, South Korea ; Hongku Kang ; Yeongyoon Choi ; Kiseon Kim

The performance of orthogonal frequency division multiplexing (OFDM) using postdetection-combining-based macrodiversity is analyzed on a shadowed multipath channel, and the effects of correlated shadowing are investigated. We show that the postdetection-combining-based macrodiversity provides larger performance gain than the selection-based one, especially for the channel characterized by random multipath parameters. It is also shown that the gain obtained by using the postdetection-combining-based macrodiversity is reduced more and more as the correlation among the macrodiversity ports increases. Even for the fully correlated shadowing situation, however, the postdetection-combining-based macrodiversity still provides a considerable gain compared with no diversity case.

Published in:

Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on  (Volume:2 )

Date of Conference:

27-30 Oct. 2002