Large MIMO Systems
Large MIMO systems, with tens to hundreds of antennas, are a promising emerging communication technology. This book provides a unique overview of this technology, covering the opportunities, engineering challenges, solutions and state of the art of large MIMO test beds. There is in-depth coverage of algorithms for large MIMO signal processing, based on meta-heuristics, belief propagation and Monte Carlo sampling techniques, and suited for large MIMO signal detection, precoding and LDPC code designs. The book also covers the training requirement and channel estimation approaches in large-scale point-to-point and multi-user MIMO systems; spatial modulation is also included. Issues like pilot contamination and base station cooperation in multi-cell operation are addressed. A detailed exposition of MIMO channel models, large MIMO channel sounding measurements in the past and present, and large MIMO test beds is also presented. An ideal resource for academic researchers, next generation wireless system designers and developers, and practitioners in wireless communications.
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Detection based on local search
Detection based on probabilistic data association PDA
Detectiondecoding based on message passing on graphical models
Detection based on MCMC techniques
Channel estimation in large MIMO systems
achieve antenna arrays Average received SNR B. S. Rajan belief propagation BER performance BP algorithm bps/Hz capacity CDMA channel estimation channel gain channel matrix channel model computation correlation denote detector distribution downlink factor graph fading channels Figure Gaussian Gibbs sampling given IEEE IEEE Trans increasing initial vector interference large MIMO systems large number LDPC codes linear low complexity lower bound M-QAM ML cost ML performance MMSE modulation multiuser MIMO system neighborhood NO-STBC number of antennas number of iterations optimal output parameters pilot precoding precoding matrix receive antennas received SNR dB restarts Signal Process simulations SISO AWGN solution vector space-time coding spatial multiplexing spectral efficiency sphere decoding STBC subchannels symbol vector system model tabu search transmit and receive turbo coded update user terminals V-BLAST MIMO system values variable nodes Wireless Commun