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Conference Papers Year : 2013

Channel Estimation for Spatial Modulation

Abstract

In single-stream multiple-input multiple-output (MIMO) schemes, such as spatial modulation (SM) and space shift keying (SSK), a single transmit antenna is activated at any given time. Therefore, unlike multi-stream MIMO transmitters, simultaneous pilot transmissions are prohibitive because of a single radio-frequency (RF) chain. In state-of-the-art literature, the channels of different transmit antennas are individually estimated. As a result, more time is required to transfer pilots and the effective data rate is compromised. In this paper, we propose a novel channel estimation (CE) technique for single-stream MIMO systems. Given a pilot ratio, the proposed scheme achieves the same estimation period as multi-stream MIMO systems without needing any additional information or feedback. Simulations are implemented under a practical base station environment. Results show that for various speeds of the mobile user, the proposed approach significantly improves the performance of SM in comparison to the conventional CE method.
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Dates and versions

hal-00933811 , version 1 (21-01-2014)

Identifiers

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Xiping Wu, Marco Di Renzo, Harald Haas. Channel Estimation for Spatial Modulation. 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Sep 2013, Londres, United Kingdom. pp.1-5, ⟨10.1109/pimrc.2013.6666151⟩. ⟨hal-00933811⟩
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