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A Power Saving Dual-Hop Architecture Based on Hybrid Spatial Modulation

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Original languageEnglish
Title of host publication2012 Conference Record of the Forty Sixth Asilomar Conference on Signals, Systems and Computers (ASILOMAR),
Place of PublicationPalm Grove, CA, USA
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1366 - 1370
Number of pages5
ISBN (Print)978-1-4673-5050-1
Publication statusPublished - 4 Nov 2012


In this paper, we propose a novel Dual-Hop Decode-and-Forward (DF) architecture based on Multiple-Input Multiple-Output (MIMO) Zero Forcing (ZF) precoding and Spatial Modulation (SM) that employs a centralized or a distributed detection algorithm at the Relay Nodes (RNs). Using Tikhonov Regularization (TR) we form a precoding technique that turns out to reduce significantly the transmitted power at the Source Node (SN) under certain scenarios. Moreover, the use of TR enables our scheme to communicate in channels with low and medium correlation at the first hop without a Bit Error Rate (BER) penalty. Finally, we extend our scheme in order to take into account realistic Channel State Information (CSI) at the the Source Node (SN).

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