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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 paper considers cooperative eigen beamforming with the use of partial channel information (e.g., transmit correlation) to maximize achievable sum-rate of multi-user dual-hop multiple-input single-output relay channels. By exploiting the transmit correlation in a cooperative manner, the proposed scheme selects a pair of users whose transmit correlation have the largest phase difference of the...
We consider a power allocation strategy to maximize the end-to-end capacity of a regenerative dual-hop multiple-input single-output (MISO) relay channel with the use of transmit beamforming. In a dual-hop MISO relay channel, the optimum power allocation can be determined by means of a max-min technique with sum power constraints. The proposed scheme adaptively allocates the transmit power of the source...
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