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Multipath Diversity through Time Shifted Sampling for Spatially Correlated OFDM-Antenna Array Systems

Refik Çalar KIZILIRMAK, Yukitoshi SANADA

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Summary :

An essential condition for diversity reception is that the fading distributions between individual received signals of an antenna array are uncorrelated. In this paper, a new technique to improve the performance of transmission with the correlated Rayleigh-fading signals is proposed. In conventional array systems, individual receivers start sampling the received signals at the same time with the same sampling rate. On the other hand, in the proposed scheme, the received signals are again sampled with the same rate, however the sampling points are shifted in each receiver. Numerical results through computer simulation show that with correlated received signals, by applying the proposed technique the correlation can be reduced to a sufficient level for diversity reception.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.11 pp.3104-3111
Publication Date
2008/11/01
Publicized
Online ISSN
1745-1337
DOI
10.1093/ietfec/e91-a.11.3104
Type of Manuscript
Special Section PAPER (Special Section on Wideband Systems)
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