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In this letter, we first put forward a new basic problem to the famous vector perturbation (VP) precoding that whether the extended constellation of VP could transmit more information bits. Then, we propose an opportunistic vector perturbation (OVP) precoding with superposition signalling scheme, which is aimed at getting the performance of VP closer to capacity limit. The main idea is using subsequent...
Vector perturbation (VP) is a prominent precoding technique attracted a lot of attention in recent years. Until now, however, various extended VP techniques proposed to apply in multiuser precoding are almost restricted to one antenna configuration of each user. The restriction does not meet the development of next generation wireless systems. So, the well-known block diagonal (BD) algorithm and VP...
In recently years, lattice-reduction (LR) has been proposed to improve the performance of linear and successive interference cancellation (SIC) detectors in MIMO systems. It is proved that LR-aided linear detectors collect the same diversity order as that exploited by the ML detector but with much lower complexity when perfect channel state information (CSI) is available at receiver side. However,...
In point to point MIMO systems, uniform channel decomposition (UCD) has been proven to be optimal in BER performance and strictly capacity lossless when perfect channel state information (CSI) are assumed to be available at both the transmitter and receiver side. However, in practice, CSI is always contaminated by channel estimation error. In this paper, we proposed a novel Robust UCD scheme which...
According, to the new discrete particle swarm optimization (NDPSO) and combining NDPSO with the mutation operator of the genetic algorithm, we proposed a novel hybrid discrete particle swarm optimization detection algorithm for the vertical bell-labs layered space-time (V-BLAST) system. The complexity of the proposed detection algorithm is analyzed. Compared with the maximum likelihood (ML) detection...
From the probability distribution of the phase angle between two vectors perturbed by Gaussian noises, the formulae of bit error rate(BER) for the performance analysis of Gaussian minimum shift keying (GMSK) system applying two-bit differential detection and decision feedback(DF) is derived in this paper. Considering the m-bits dock-tailed sequence, the new formulae of GMSK modulated phase and the...
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