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The problem of transmitting a common message over a multiple-input multiple-output (MIMO) Gaussian broadcast channel with multiple receivers is well understood in terms of capacity. Nevertheless, existing optimal (capacity-achieving) schemes for this scenario require joint decoding of the multiple streams transmitted, entailing high computational complexity. In this paper, a low-complexity scheme...
In this letter, we propose a novel transmission scheme based on lattice precoding and pre-distorted constellation for the two-user AWGN degraded broadcast channel. In the proposed scheme, the lattice precoding is used for the weaker user to cancel the interference from the stronger user. The predistorted constellation is also proposed for the stronger user to overcome the nonlinear distortion due...
In this paper we consider user scheduling problem for linearly preceded multiuser multiple-input multiple-output (MIMO) downlink, where base station as well as the mobile receivers are equipped with multiple antennas. Optimal precoding involves dirty paper coding (DPC) technique, and it is highly nonlinear and complex. On the other hand, complete inter-user interference cancellation using linear zero-forcing...
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