Tomlinson Harashima Precoding for Mimo Systems with Low Resolution D/a-converters
نویسندگان
چکیده
We study the joint transmitter optimization for the flat multiinput multi-output (MIMO) channel under nonlinear distortion from the digital-to-analog converters (DACs). Our design is based on a minimum mean square error (MMSE) approach, taking into account the effects of the transmitter nonlinearities. The derivation does not make use of the assumption of uncorrelated white distortion (quantization) errors and considers the correlations of the quantization error with the other signals of the system. Through simulation, we compare the new optimized Tomlinson Harashima precoder to previously proposed transmitter designs when operating under DACs in terms of uncoded BER.
منابع مشابه
Vector Precoding for Wireless MIMO Systems: A Replica Analysis
We apply the replica method to analyze vector precoding, a method to reduce transmit power in antenna array communications. The analysis applies to a very general class of channel matrices. The statistics of the channel matrix enter the transmitted energy per symbol via its R-transform. We find that vector precoding performs much better for complex than for real alphabets. As a byproduct, we fi...
متن کاملLattice-Reduction-Aided Tomlinson-Harashima Precoding for Point-to-Multipoint Transmission
A new version of Tomlinson-Harashima Precoding (THP) for multiple-input/multiple-output (MIMO) channels with decentralised receivers employing lattice reduction is introduced. The proposed method clearly outperforms linear equalisation and conventional THP and in particular shows full diversity order.
متن کاملReceive Antenna Selection for Multiuser MIMO Systems with Tomlinson-Harashima Precoding
In this letter, we discuss the problem of receive antenna selection in the downlink of multiuser multiple-input multiple-output (MIMO) systems with Tomlinson-Harashima precoding (THP), where the number of receivers is assumed equal to that of transmit antennas. Based on the criterion of maximum system sum-capacity, a per-layer receive antenna selection scheme is proposed. This scheme, which sel...
متن کاملImplementation aspects of nonlinear precoding for G.fast - coding and legacy receivers
Hybrid copper/fiber networks bridge the gap between the fiber link at the distribution point and the customer by using copper wires over the last meters. The G.fast technology has been designed to be used in such a fiber to the distribution point (FTTdp) network. Crosstalk management using MIMO precoding is a key to the required performance of FTTdp. With higher frequencies used on copper wires...
متن کاملTomlinson-Harashima Precoding for Multiuser MIMO Systems with Quantized CSI Feedback and User Scheduling
This paper studies the sum rate performance of a low complexity quantized CSI-based Tomlinson-Harashima (TH) precoding scheme for downlink multiuser MIMO tansmission, employing greedy user selection. The asymptotic distribution of the output signal to interference plus noise ratio of each selected user and the asymptotic sum rate as the number of users K grows large are derived by using extreme...
متن کامل