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We study the problem of constructing good spacetime codes for broadcasting K independent messages over a MIMO network to L users, where each user demands all the messages and already has a subset of messages as side information. As a first attempt, we consider the 2 × 2 case and propose golden-coded index coding by partitioning the golden codes into K subcodes, one for each message. The proposed scheme...
Vector Perturbation Precoding (VPP) has gained recognition as a reduced-complexity method to achieve high-rates in multiuser multiple-input multiple-output (MIMO) downlink. Here we propose Space-Time VPP (STVPP), where the nonlinear lattice-based precoding operations of standard VPP are extended into the time domain. This is done by introducing temporal precoding lattices for each user, and performing...
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