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This paper investigates the sum-rate capacity of a multi-user broadcast channel (BC) assuming that users have different transmit correlation matrices. The sum-rate capacity of two-user BC has recently been investigated. As an extension of the two-user BC case, we analyze the sum-rate capacity of a multi-user BC. It is shown by means of upper-bound analysis that the sum-rate capacity of a correlated...
This paper considers power allocation in spatially-correlated dual-hop multiple-input multiple-output (MIMO) relay channels under power constraint for each hop channel. The proposed scheme allocates the transmit power considering the spatial correlation as well as the average signal-to-noise ratio (SNR) of dual-hop MIMO relay channels. By means of upper-bound analysis, the proposed scheme can minimize...
This letter investigates the effect of the transmit correlation on the sum-rate capacity of a two-user broadcast channel (BC) with the use of equal-power allocation in high signal-to-noise ratio (SNR) environments. It is shown using an upper-bound analysis that the sum-rate capacity of a correlated two-user BC at high SNR highly depends on the phase difference between the transmit correlation coefficients...
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