Low Complexity Soft-Output Signal Detector for Spatial-Multiplexing MIMO System
(2011) 22nd Annual IEEE symposium on Personal Indoor Mobile Radio Communications (PIMRC 2011) p.1718-1722- 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... (More)
- 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1981930
- author
- Liu, Liang LU ; Löfgren, Johan LU and Nilsson, Peter LU
- organization
- publishing date
- 2011
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)
- pages
- 1718 - 1722
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 22nd Annual IEEE symposium on Personal Indoor Mobile Radio Communications (PIMRC 2011)
- conference location
- Toronto, Canada
- conference dates
- 2011-09-11
- external identifiers
-
- wos:000300719700333
- scopus:84863279208
- ISBN
- 978-1-4577-1348-4
- language
- English
- LU publication?
- yes
- id
- 85b2047c-c018-48c3-b70a-61bbe336d691 (old id 1981930)
- date added to LUP
- 2016-04-04 11:09:31
- date last changed
- 2024-01-12 23:28:11
@inproceedings{85b2047c-c018-48c3-b70a-61bbe336d691, 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 = {{Liu, Liang and Löfgren, Johan and Nilsson, Peter}}, booktitle = {{2011 IEEE 22ND INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)}}, isbn = {{978-1-4577-1348-4}}, language = {{eng}}, pages = {{1718--1722}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Low Complexity Soft-Output Signal Detector for Spatial-Multiplexing MIMO System}}, year = {{2011}}, }