| Summary: | 碩士 === 國立中央大學 === 通訊工程研究所 === 98 === In practice and in theory, correlated complex Nakagami-m fading channels are generated in a laboratory environment, level crossing rate and average fade duration of diversity
combining over correlated Nakagami-m fading channels are analyzed in this paper. In the derivation of maximal-ratio combining [20], it uses the concept about matched filter and assumes that received signals are independent. The maximal-ratio combining method that was conventionally employed in the previous studied [45], [46], [49] directly sums envelope squares across all branches. If the fading channels are correlated, this method is definitely incorrectly performed and undoubtedly loses its predominance. By definition, when the fading channels are correlated, the MRC should be derived in accordance with the KL expansion theorem for random processes [28]. As a result, a whitening process has to be conducted prior to the power accumulation process for the maximum SNR.
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