Low-Power Dynamic MIMO Detection for a 4 x 4 MIMO-OFDM Receiver

Miyazaki, Nozomi; Yoshizawa, Shingo; Miyanaga, Yoshikazu

doi:10.1587/transfun.E97.A.306


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Low-Power Dynamic MIMO Detection for a 4 x 4 MIMO-OFDM Receiver

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/55180

Title:	Low-Power Dynamic MIMO Detection for a 4 x 4 MIMO-OFDM Receiver
Authors:	Miyazaki, Nozomi Browse this author
	Yoshizawa, Shingo Browse this author →KAKEN DB
	Miyanaga, Yoshikazu Browse this author →KAKEN DB
Keywords:	wireless communications
	MIMO detection
	low power
	DVFS
Issue Date:	Jan-2014
Publisher:	Institute of Electronics, Information and Communication Engineers
Journal Title:	IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences
Volume:	E97A
Issue:	1
Start Page:	306
End Page:	312
Publisher DOI:	10.1587/transfun.E97.A.306
Abstract:	This paper describes low-power dynamic multiple-input and multiple-output (MIMO) detection for a 4x4 MIMO-orthogonal frequency-division multiplexing (MIMO-OFDM) receiver. MIMO-OFDM systems achieve high-speed and large capacity communications. However, they impose high computational cost in MIMO detection when separating spatially multiplexed signals and they consume vast amounts of power. We propose low-power dynamic MIMO detection that controls detection speed according to wireless environments. The power consumption is reduced by dynamic voltage and frequency scaling (DVFS) that controls the operating voltage and clock frequency in the MIMO detector. We implemented dynamic MIMO detection in a pipelined minimum mean square error (MMSE) MIMO detector that we developed in our previous work. A power saving of 92% was achieved under lowest clock frequency mode conditions.
Rights:	Copyright ©2014 The Institute of Electronics, Information and Communication Engineers
Relation:	http://search.ieice.org/
Type:	article
URI:	http://hdl.handle.net/2115/55180
Appears in Collections:	情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 宮永喜一

OAI-PMH ( junii2 , jpcoar_1.0 )

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