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In this paper, a new receive antenna subset (RAS) selection scheme is proposed for precoding-aided spatial modulation (PSM). First, a lattice reduction (LR)-based precoder is employed instead of a conventional zero-forcing (ZF) precoder. It is analytically shown that a full diversity gain can be achieved by the LR-based ZF precoder without RAS sele...
Contexts in source publication
Context 1
... an over-determined MIMO time division duplex (TDD) system with N T transmit antennas and N R (N R > N T ) receive antennas as shown in Figure 1. The full channel matrix is given as H ∈ C N R ×N T , which is the quasi-static channel matrix whose elements are independent and identically distributed (i.i.d.) circularly symmetric complex Gaussian random variables with zero mean and unit variance. ...
Context 2
... ZF precoding-based SM system with N T ≥ N R (i.e., under-determined MIMO) whose transmit diversity order is well-known to be N T − N R + 1 cannot provide the full diversity gain originating from multiple transmit antennas. This paper considers an LRbased PSM system (Figure 1) to achieve the maximum transmit diversity gain of N T . LR is a process to find a new basis for the given lattice with basis vectors ...
