Multi-Branch Tomlinson-Harashima Precoding Design for MU-MIMO Systems: Theory and Algorithms

Tomlinson-Harashima precoding (THP) is a nonlinear processing technique employed at the transmit side which is a dual to the successive interference cancelation (SIC) detection at the receive side. Like SIC detection, the performance of THP strongly depends on the ordering of the precoded symbols. T...

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Vydáno v:IEEE transactions on communications Ročník 62; číslo 3; s. 939 - 951
Hlavní autoři: Zu, Keke, de Lamare, Rodrigo C., Haardt, Martin
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.03.2014
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Algorithm design and analysis
Algorithms
Antennas
Applied sciences
Bit error rate
Coding, codes
Computer science; control theory; systems
Control theory. Systems
Design engineering
Detection, estimation, filtering, equalization, prediction
Exact sciences and technology
Information, signal and communications theory
Interference
MIMO
multi-branch (MB)
Multiuser MIMO (MU-MIMO)
Optimization
Order disorder
Receivers
Receiving antennas
Signal and communications theory
Signal, noise
Silicon carbide
Strategy
System theory
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Tomlinson-Harashima precoding (THP)
Transmission and modulation (techniques and equipments)
Performance evaluation
Weighting filter
Noise reduction
Bit error rate
Transmitter
Mean square error
Coding
Ordering
Selection criterion
Pretreatment
Receiving antenna
Antenna array
Multiuser MIMO (MU-MIMO)
MIMO system
Multiple access
Optimal algorithm
Coding circuit
Systems theory
Computational complexity
Interference suppression
Simulation
Decentralized system
Tomlinson-Harashima precoding (THP)
Signal processing
Non linear processing
multi-branch (MB)
ISSN:0090-6778, 1558-0857
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Popis
Shrnutí:Tomlinson-Harashima precoding (THP) is a nonlinear processing technique employed at the transmit side which is a dual to the successive interference cancelation (SIC) detection at the receive side. Like SIC detection, the performance of THP strongly depends on the ordering of the precoded symbols. The optimal ordering algorithm, however, is impractical for multiuser MIMO (MU-MIMO) systems with multiple receive antennas due to the fact that the users are geographically distributed. In this paper, we propose a multi-branch THP (MB-THP) scheme and algorithms that employ multiple transmit processing and ordering strategies along with a selection scheme to mitigate interference in MU-MIMO systems. Two types of multi-branch THP (MB-THP) structures are proposed. The first one employs a decentralized strategy with diagonal weighted filters at the receivers of the users and the second uses a diagonal weighted filter at the transmitter. The MB-MMSE-THP algorithms are also derived based on an extended system model with the aid of an LQ decomposition, which is much simpler compared to the conventional MMSE-THP algorithms. Simulation results show that a better bit error rate (BER) performance can be achieved by the proposed MB-MMSE-THP precoder with a small computational complexity increase.
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ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2014.012514.130241