Energy-Efficient Adaptive Modulated Fixed-Complexity Sphere Decoder

Yun Wu; John McAllister

doi:10.1109/SiPS52927.2021.00023

Energy-Efficient Adaptive Modulated Fixed-Complexity Sphere Decoder

Yun Wu, John McAllister

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Fixed-Complexity Sphere Decoder (FSD) is an quasi-optimal detector for Multiple-Input Multiple-Output (MIMO) system which is a hardware-friendly parallel tree-search customised to the modulation and antenna scheme employed. However, it is not able to adapt its behaviour for various modulation and antenna schemes, as demanded by modern wireless standard. This restricts its usage in modern adaptive MIMO systems. This paper proposes a solution to this problem. A configurable FSD structure in proposed where normalized higher order modulation schemes can accommodate lower ones. By exploiting clock-gating, FSD of all modulation schemes is equally trimmed to allow power savings of over 30% when implementing on Field Programmable Gate Array (FPGA). This architecture enables the facility to balance the power consumptions with compatible information rate in dynamic, adaptive MIMO communications environments.

Original language	English
Title of host publication	2021 IEEE Workshop on Signal Processing Systems (SiPS 2021): Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	82-87
Number of pages	6
ISBN (Electronic)	9781665401449
DOIs	https://doi.org/10.1109/SiPS52927.2021.00023
Publication status	Published - 13 Nov 2021
Event	2021 IEEE Workshop on Signal Processing Systems, SiPS 2021 - Coimbra, Portugal Duration: 19 Oct 2021 → 21 Oct 2021

Publication series

Name	IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation
Volume	2021-October
ISSN (Print)	1520-6130

Conference

Conference	2021 IEEE Workshop on Signal Processing Systems, SiPS 2021
Country/Territory	Portugal
City	Coimbra
Period	19/10/2021 → 21/10/2021

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

Keywords

Adaptive Modulation
Field Programmable Gate Array
Fixed-complexity Sphere Decoder
Multiple-Input Multiple-Output

ASJC Scopus subject areas

Electrical and Electronic Engineering
Signal Processing
Applied Mathematics
Hardware and Architecture

Access to Document

10.1109/SiPS52927.2021.00023Licence: Unspecified

Cite this

Wu, Y., & McAllister, J. (2021). Energy-Efficient Adaptive Modulated Fixed-Complexity Sphere Decoder. In 2021 IEEE Workshop on Signal Processing Systems (SiPS 2021): Proceedings (pp. 82-87). (IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation; Vol. 2021-October). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SiPS52927.2021.00023

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title = "Energy-Efficient Adaptive Modulated Fixed-Complexity Sphere Decoder",

abstract = "Fixed-Complexity Sphere Decoder (FSD) is an quasi-optimal detector for Multiple-Input Multiple-Output (MIMO) system which is a hardware-friendly parallel tree-search customised to the modulation and antenna scheme employed. However, it is not able to adapt its behaviour for various modulation and antenna schemes, as demanded by modern wireless standard. This restricts its usage in modern adaptive MIMO systems. This paper proposes a solution to this problem. A configurable FSD structure in proposed where normalized higher order modulation schemes can accommodate lower ones. By exploiting clock-gating, FSD of all modulation schemes is equally trimmed to allow power savings of over 30% when implementing on Field Programmable Gate Array (FPGA). This architecture enables the facility to balance the power consumptions with compatible information rate in dynamic, adaptive MIMO communications environments. ",

keywords = "Adaptive Modulation, Field Programmable Gate Array, Fixed-complexity Sphere Decoder, Multiple-Input Multiple-Output",

author = "Yun Wu and John McAllister",

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doi = "10.1109/SiPS52927.2021.00023",

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Wu, Y & McAllister, J 2021, Energy-Efficient Adaptive Modulated Fixed-Complexity Sphere Decoder. in 2021 IEEE Workshop on Signal Processing Systems (SiPS 2021): Proceedings. IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation, vol. 2021-October, Institute of Electrical and Electronics Engineers Inc., pp. 82-87, 2021 IEEE Workshop on Signal Processing Systems, SiPS 2021, Coimbra, Portugal, 19/10/2021. https://doi.org/10.1109/SiPS52927.2021.00023

Energy-Efficient Adaptive Modulated Fixed-Complexity Sphere Decoder. / Wu, Yun ; McAllister, John.
2021 IEEE Workshop on Signal Processing Systems (SiPS 2021): Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. p. 82-87 (IEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation; Vol. 2021-October).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N2 - Fixed-Complexity Sphere Decoder (FSD) is an quasi-optimal detector for Multiple-Input Multiple-Output (MIMO) system which is a hardware-friendly parallel tree-search customised to the modulation and antenna scheme employed. However, it is not able to adapt its behaviour for various modulation and antenna schemes, as demanded by modern wireless standard. This restricts its usage in modern adaptive MIMO systems. This paper proposes a solution to this problem. A configurable FSD structure in proposed where normalized higher order modulation schemes can accommodate lower ones. By exploiting clock-gating, FSD of all modulation schemes is equally trimmed to allow power savings of over 30% when implementing on Field Programmable Gate Array (FPGA). This architecture enables the facility to balance the power consumptions with compatible information rate in dynamic, adaptive MIMO communications environments.

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Energy-Efficient Adaptive Modulated Fixed-Complexity Sphere Decoder

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this