Low Complexity Soft-Output Signal Detector for Spatial-Multiplexing MIMO System

Liang Liu; Johan Löfgren; Peter Nilsson

Low Complexity Soft-Output Signal Detector for Spatial-Multiplexing MIMO System

Liang Liu, Johan Löfgren, Peter Nilsson

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

Abstract

This paper presents a cost-efficient soft-output signal detector design solution targeting on the spatial-multiplexing MIMO system. The detector achieves low hardware cost and near-optimal detection performance based on the modification to the fixed-complexity sphere decoder (FSD) using several implementation-oriented algorithm-level improvements, which are early-pruning with polygon-shaped constraint, symbol-level bit-flipping, and l1-norm approximation. To evaluate the proposed method, we implement the MIMO detector in a 65-nm standard VT CMOS technology. The core area is 0.14 mm2 with 69 K equivalent gates, representing a 60% hardware-resource saving to the state of art in the open literature. The detecting throughput is up to 1.5Gb/s at 250-MHz clock frequency and 1.2-V supply. The normalized energy consumption of 36.4 pJ/b is shown to be the most energy-efficient design compared with other soft-output detectors.

Original language	English
Title of host publication	2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)
Publisher	IEEE - Institute of Electrical and Electronics Engineers Inc.
Pages	1718-1722
ISBN (Print)	978-1-4577-1348-4
Publication status	Published - 2011
Event	22nd Annual IEEE symposium on Personal Indoor Mobile Radio Communications (PIMRC 2011) - Toronto, Canada Duration: 2011 Sept 11 → …

Conference

Conference	22nd Annual IEEE symposium on Personal Indoor Mobile Radio Communications (PIMRC 2011)
Country/Territory	Canada
City	Toronto
Period	2011/09/11 → …

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Subject classification (UKÄ)

Electrical Engineering, Electronic Engineering, Information Engineering

Cite this

@inproceedings{85b2047cc01848c3b70a61bbe336d691,

title = "Low Complexity Soft-Output Signal Detector for Spatial-Multiplexing MIMO System",

abstract = "This paper presents a cost-efficient soft-output signal detector design solution targeting on the spatial-multiplexing MIMO system. The detector achieves low hardware cost and near-optimal detection performance based on the modification to the fixed-complexity sphere decoder (FSD) using several implementation-oriented algorithm-level improvements, which are early-pruning with polygon-shaped constraint, symbol-level bit-flipping, and l1-norm approximation. To evaluate the proposed method, we implement the MIMO detector in a 65-nm standard VT CMOS technology. The core area is 0.14 mm2 with 69 K equivalent gates, representing a 60\% hardware-resource saving to the state of art in the open literature. The detecting throughput is up to 1.5Gb/s at 250-MHz clock frequency and 1.2-V supply. The normalized energy consumption of 36.4 pJ/b is shown to be the most energy-efficient design compared with other soft-output detectors.",

author = "Liang Liu and Johan L{\"o}fgren and Peter Nilsson",

year = "2011",

language = "English",

isbn = "978-1-4577-1348-4",

pages = "1718--1722",

booktitle = "2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)",

publisher = "IEEE - Institute of Electrical and Electronics Engineers Inc.",

address = "United States",

note = "22nd Annual IEEE symposium on Personal Indoor Mobile Radio Communications (PIMRC 2011) ; Conference date: 11-09-2011",

}

Liu, L, Löfgren, J & Nilsson, P 2011, Low Complexity Soft-Output Signal Detector for Spatial-Multiplexing MIMO System. in 2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC). IEEE - Institute of Electrical and Electronics Engineers Inc., pp. 1718-1722, 22nd Annual IEEE symposium on Personal Indoor Mobile Radio Communications (PIMRC 2011), Toronto, Canada, 2011/09/11.

Low Complexity Soft-Output Signal Detector for Spatial-Multiplexing MIMO System. / Liu, Liang; Löfgren, Johan; Nilsson, Peter.
2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC). IEEE - Institute of Electrical and Electronics Engineers Inc., 2011. p. 1718-1722.

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

TY - GEN

T1 - Low Complexity Soft-Output Signal Detector for Spatial-Multiplexing MIMO System

AU - Liu, Liang

AU - Löfgren, Johan

AU - Nilsson, Peter

PY - 2011

Y1 - 2011

N2 - This paper presents a cost-efficient soft-output signal detector design solution targeting on the spatial-multiplexing MIMO system. The detector achieves low hardware cost and near-optimal detection performance based on the modification to the fixed-complexity sphere decoder (FSD) using several implementation-oriented algorithm-level improvements, which are early-pruning with polygon-shaped constraint, symbol-level bit-flipping, and l1-norm approximation. To evaluate the proposed method, we implement the MIMO detector in a 65-nm standard VT CMOS technology. The core area is 0.14 mm2 with 69 K equivalent gates, representing a 60% hardware-resource saving to the state of art in the open literature. The detecting throughput is up to 1.5Gb/s at 250-MHz clock frequency and 1.2-V supply. The normalized energy consumption of 36.4 pJ/b is shown to be the most energy-efficient design compared with other soft-output detectors.

AB - This paper presents a cost-efficient soft-output signal detector design solution targeting on the spatial-multiplexing MIMO system. The detector achieves low hardware cost and near-optimal detection performance based on the modification to the fixed-complexity sphere decoder (FSD) using several implementation-oriented algorithm-level improvements, which are early-pruning with polygon-shaped constraint, symbol-level bit-flipping, and l1-norm approximation. To evaluate the proposed method, we implement the MIMO detector in a 65-nm standard VT CMOS technology. The core area is 0.14 mm2 with 69 K equivalent gates, representing a 60% hardware-resource saving to the state of art in the open literature. The detecting throughput is up to 1.5Gb/s at 250-MHz clock frequency and 1.2-V supply. The normalized energy consumption of 36.4 pJ/b is shown to be the most energy-efficient design compared with other soft-output detectors.

UR - https://www.scopus.com/pages/publications/84863279208

M3 - Paper in conference proceeding

SN - 978-1-4577-1348-4

SP - 1718

EP - 1722

BT - 2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)

PB - IEEE - Institute of Electrical and Electronics Engineers Inc.

T2 - 22nd Annual IEEE symposium on Personal Indoor Mobile Radio Communications (PIMRC 2011)

Y2 - 11 September 2011

ER -

Low Complexity Soft-Output Signal Detector for Spatial-Multiplexing MIMO System

Abstract

Conference

UN SDGs

Subject classification (UKÄ)

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