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Two decades of MIMO design tradeoffs and reduced-complexity MIMO detection in near-capacity systems

Two decades of MIMO design tradeoffs and reduced-complexity MIMO detection in near-capacity systems
Two decades of MIMO design tradeoffs and reduced-complexity MIMO detection in near-capacity systems
A pair of salient tradeoffs have driven the MIMO systems developments. More explicitly, the early era of MIMO developments was predominantly motivated by the multiplexingdiversity tradeoff between the Bell Laboratories Layered Space- Time (BLAST) and Space-Time Block Coding (STBC). Later, the Linear Dispersion Code (LDC) concept was introduced to strike a flexible tradeoff. The more recent MIMO system designs were motivated by the performance-complexity tradeoff, where the Spatial Modulation (SM) and Space-Time Shift Keying (STSK) concepts eliminate the problem of Inter-Antenna Interference (IAI) and perform well with the aid of low-complexity linear receivers without imposing a substantial performance loss on generic ML/MAP aided MIMO detection. Against the background of the MIMO design tradeoffs in both uncoded and coded MIMO systems, in this treatise, we offer a comprehensive survey of MIMO detectors ranging from hard-decision to softdecision. The soft-decision MIMO detectors play a pivotal role in approaching to the full performance potential promised by the MIMO capacity theorem. Having said that, in the near-capacity system design, the soft-decision MIMO detection dominates the total complexity, because all the MIMO signal combinations have to be examined, when both the channel’s output signal and the a priori LLRs gleaned from the channel decoder are taken into account. Against this background, we provide reducedcomplexity design guidelines, which are conceived for a widerange of soft-decision MIMO detectors.
2169-3536
Xu, Chao
5710a067-6320-4f5a-8689-7881f6c46252
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Ng, Soon
e19a63b0-0f12-4591-ab5f-554820d5f78c
Zhang, Peichang
ec887077-dc96-4b72-8caa-719a5a1a9ba8
Wang, Li
f54669eb-8e6b-43ea-a6df-47cda21d6950
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Xu, Chao
5710a067-6320-4f5a-8689-7881f6c46252
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Ng, Soon
e19a63b0-0f12-4591-ab5f-554820d5f78c
Zhang, Peichang
ec887077-dc96-4b72-8caa-719a5a1a9ba8
Wang, Li
f54669eb-8e6b-43ea-a6df-47cda21d6950
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Xu, Chao, Sugiura, Shinya, Ng, Soon, Zhang, Peichang, Wang, Li and Hanzo, Lajos (2017) Two decades of MIMO design tradeoffs and reduced-complexity MIMO detection in near-capacity systems. IEEE Access. (doi:10.1109/ACCESS.2017.2707182).

Record type: Article

Abstract

A pair of salient tradeoffs have driven the MIMO systems developments. More explicitly, the early era of MIMO developments was predominantly motivated by the multiplexingdiversity tradeoff between the Bell Laboratories Layered Space- Time (BLAST) and Space-Time Block Coding (STBC). Later, the Linear Dispersion Code (LDC) concept was introduced to strike a flexible tradeoff. The more recent MIMO system designs were motivated by the performance-complexity tradeoff, where the Spatial Modulation (SM) and Space-Time Shift Keying (STSK) concepts eliminate the problem of Inter-Antenna Interference (IAI) and perform well with the aid of low-complexity linear receivers without imposing a substantial performance loss on generic ML/MAP aided MIMO detection. Against the background of the MIMO design tradeoffs in both uncoded and coded MIMO systems, in this treatise, we offer a comprehensive survey of MIMO detectors ranging from hard-decision to softdecision. The soft-decision MIMO detectors play a pivotal role in approaching to the full performance potential promised by the MIMO capacity theorem. Having said that, in the near-capacity system design, the soft-decision MIMO detection dominates the total complexity, because all the MIMO signal combinations have to be examined, when both the channel’s output signal and the a priori LLRs gleaned from the channel decoder are taken into account. Against this background, we provide reducedcomplexity design guidelines, which are conceived for a widerange of soft-decision MIMO detectors.

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Accepted/In Press date: 18 May 2017
e-pub ahead of print date: 23 May 2017

Identifiers

Local EPrints ID: 413921
URI: http://eprints.soton.ac.uk/id/eprint/413921
ISSN: 2169-3536
PURE UUID: 74744d0e-a30d-4687-8351-fc449dc72efa
ORCID for Chao Xu: ORCID iD orcid.org/0000-0002-8423-0342
ORCID for Soon Ng: ORCID iD orcid.org/0000-0002-0930-7194
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 11 Sep 2017 16:31
Last modified: 18 Feb 2021 17:16

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