DocumentCode
65186
Title
Spatial Modulation Achieves Information-Theoretically Optimal Energy Efficiency
Author
Takeuchi, Keigo
Author_Institution
Dept. of Commun. Eng. & Inf., Univ. of Electro-Commun., Tokyo, Japan
Volume
19
Issue
7
fYear
2015
fDate
Jul-15
Firstpage
1133
Lastpage
1136
Abstract
Spatial modulation (SM) is investigated for multiple-input single-output channels with perfect channel state information at the receiver. In spite of its low implementation complexity, SM with quadrature phase-shift keying is proved to achieve an information-theoretically achievable rate that is equal to the channel capacity up to second order as the signal-to-noise ratio tends to zero. This implies that SM is second-order optimal in terms of energy efficiency.
Keywords
modulation; quadrature phase shift keying; receiving antennas; SM; channel capacity; channel state information; information theoretically optimal energy efficiency; multiple-input single-output channels; quadrature phase-shift keying; receiver; signal-to-noise ratio; spatial modulation; Approximation methods; Fading; MIMO; Phase shift keying; Signal to noise ratio; Wireless communication; Spatial modulation; channel capacity; energy efficiency; information theory; low signal-to-noise ratio (SNR);
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2015.2433271
Filename
7107979
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