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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.
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on (Volume:2 )
Date of Conference: 27-30 Oct. 2002