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In this paper, a non-orthogonal pilot scheme is proposed for the downlink of the coordinated multi-point (CoMP) systems to reduce the pilot overhead. Compared with the conventional orthogonal pilot schemes resulting in a heavy burden of the system along with the increasing number of transmit antennas, our proposed scheme doesn't need the necessary orthogonality between different antennas' pilot sequences...
An improved genetic algorithm based on multiple population evolving is presented and applied to the optimization of orthogonal coded signal group for MIMO radar systems. According to the fitness of individuals, the population is divided into three groups and different evolving strategies are applied to every sub-population. The inoculation to all sub-population is actualized. This algorithm can strengthen...
In this paper, a decentralized cascade robust control scheme is developed for a class of MIMO nonlinear systems with lower triangular property and unknown nonlinearities. Due to the active compensation of the TC controller, the unknown nonlinearities will be counteracted. The algorithm proposed has no problem of the controller singularity, which may occur in algorithms based on neural networks or...
In realistic MIMO communication system, the receiver has usually perfect channel state information (CSI), while the transmitter has only partial channel state information feedback from the receiver for many reasons. This paper analyzes the partial channel state information, and introduces a method of equivalent noise to study the design of precoding with partial CSI. In this paper, based on ZF criterion,...
MIMO schemes can improve the capacity observably. The co-channel interference (CCI) and noise are two major impairments to a multi-user MIMO downlink. The precoding based on signal-to-leakage-and-noise ratio (SLNR) makes a balance between eliminating the CCI and the noise, so it improves the system performance. But the channel state of every user is different, the channel quality effects the performance...
In this paper, we focus on downlink zero forcing (ZF) beamforming design scheme for multiuser (MU) spatial multiplexing (SM) multiple-input multiple-output (MIMO) systems. Based on the minimum average probability of symbol error (PSE), we give the optimal design method of the beamforming weight matrices. Furthermore, we derive the upper bound PSEs to evaluate the impact of channel feedback errors...
Multiple input multiple output (MIMO) wireless systems have gained increasing attention today. Based on research for the known V-BLAST detection algorithms, in order to ameliorate BER performance and decrease the computational complexity, a new MIMO transceiver scheme using singular linear transformation (SLT) is proposed in this paper. In this scheme, the transmitted signal vectors with a proper...
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