NDLI: Effect of pilot ratio on channel estimation for spatial modulation

Content Provider	IEEE Xplore Digital Library
Author	Xiping Wu Di Renzo, M. Haas, H.
Copyright Year	2013
Description	Author affiliation: Sch. of Eng., Univ. of Edinburgh, Edinburgh, UK (Xiping Wu; Haas, H.) \|\| French Nat. Centre for Sci. Res., Ecole Super. d'Electricite (SUPELEC), Paris, France (Di Renzo, M.)
Abstract	Spatial modulation (SM) is a single-stream multiple-input multiple-output (MIMO) technique which only activates one transmit antenna at a time. Apart from the complete avoidance of inter-channel interference, SM also exhibits a great energy saving in the radio-frequency (RF) chain. However, in contrast to multi-stream MIMO systems, channel estimation (CE) for SM becomes a challenge since the MIMO channel cannot be estimated in one transmission step due to the single RF chain. Motivated by this fact, a novel CE scheme has been recently proposed which exploits the channel correlation and jointly estimates the channels for different transmit antennas. Without needing feedback, this new method achieves the same estimation period as multi-stream MIMO schemes. In this paper, a varying pilot ratio has been investigated in SM for both the conventional and the novel CE methods. Balancing the accuracy and the amount of data, an optimal pilot ratio can be achieved for the peak throughput. Simulation results present that the novel CE approach significantly outperforms the conventional method with a much lower optimal pilot ratio.
Sponsorship	IEEE Commun. Soc.
Starting Page	144
Ending Page	148
File Size	459709
Page Count	5
File Format	PDF
ISBN	9781467349192
DOI	10.1109/CAMAD.2013.6708106
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-09-25
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	pilot ratio Transmitting antennas Channel estimation Estimation Modulation single-stream Throughput MIMO spatial modulation (SM)
Content Type	Text
Resource Type	Article

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