Pseudo Eigenbeam-Space Division Multiplexing (PE-SDM) in Frequency-Selective MIMO Channels

Nishimoto, Hiroshi; Nishimura, Toshihiko; Ohgane, Takeo; Ogawa, Yasutaka

Pseudo Eigenbeam-Space Division Multiplexing (PE-SDM) in Frequency-Selective MIMO Channels

Nishimoto, Hiroshi; Nishimura, Toshihiko; Ohgane, Takeo et al.

IEICE Transactions on Communications, 2007, E90-B(11), 3197-3207

Permalink : https://hdl.handle.net/2115/42654

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アクセス権	open access
URI	https://hdl.handle.net/2115/42654
タイトル	Pseudo Eigenbeam-Space Division Multiplexing (PE-SDM) in Frequency-Selective MIMO Channels
著者	Nishimoto, Hiroshi ; Nishimura, Toshihiko ; Ohgane, Takeo ; Ogawa, Yasutaka
著者名 Nishimoto, Hiroshi
e-Rad_Researcher 70301934 著者名 Nishimura, Toshihiko
e-Rad_Researcher 10271636 著者名 Ohgane, Takeo
e-Rad_Researcher 70125293 著者名 Ogawa, Yasutaka
言語	英語
キーワード	MIMO system
	frequency-selective fading
	transmit beamforming
	effective channel
	frequency continuity
	singular value decomposition (SVD)
	pseudo eigenvector
	pseudo eigenbeam-space division multiplexing (PE-SDM)
	channel estimation
発行日	2007-11-01
出版者	The Institute of Electronics, Information and Communication Engineers
収録物名	IEICE Transactions on Communications
巻(号)	E90-B(11)
ページ	3197-3207
抄録	In a frequency-selective multiple-input multiple-output (MIMO) channel, the optimum transmission is achieved by beamforming with eigenvectors obtained at each discrete frequency point, i.e., an extension of eigenbeam-space division multiplexing (E-SDM). However, the calculation load of eigenvalue decomposition at the transmitter increases in proportion to the number of frequency points. In addition, frequency-independent eigenvectors increase the delay spread of the effective channel observed at the receiver. In this paper, we propose a pseudo eigenvector scheme for the purpose of mitigating the calculation load and maintaining frequency continuity (or decreasing the delay spread). First, we demonstrate that pseudo eigenvectors reduce the delay spread of the effective channels with low computational complexity. Next, the practical performance of the pseudo E-SDM (PE-SDM) transmission is evaluated. The simulation results show that PE-SDM provides almost the same or better performance compared with E-SDM when the receiver employs a time-windowing-based channel estimation available in the low delay spread cases.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	copyright©2007 IEICE
PISSN	0916-8516
EISSN	1745-1345
NCID	AA10826261
関連情報	URI http://search.ieice.org/
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1093/ietcom/e90-b.11.3197