Distributed Spatial Modulation: A Cooperative Diversity Protocol for Half–Duplex Relay–Aided Wireless Networks

Sandeep Narayanan 1 Marco Di Renzo 2 Fabio Graziosi 1 Harald Haas 3
1 DIEI - Department of Electrical and Information Engineering
2 Division Télécoms et Réseaux - L2S
L2S - Laboratoire des signaux et systèmes : 1289
3 Institute for Digital Communication Joint Research Institute for Signal & Image Processing School of Engineering and Electronics - University of Edinburgh
Abstract : In this paper, distributed spatial modulation (DSM) is introduced. DSM is a cooperative diversity protocol for multirelay wireless networks, which is based on the concept of spatial modulation (SM). The distinguishable feature of DSM lies in improving the reliability of the source via distributed diversity and by increasing the aggregate throughput of the network since new data is transmitted during each transmission phase. This is achieved by encoding the data transmitted from the source into the spatial positions of the available relays and by exploiting the signal domain to transmit the data of the relays. At the destination, a diversity combiner that is robust to demodulation errors at the relays is proposed, and its end-to-end error probability and achievable diversity are studied. It is mathematically proved that DSM allows the source to achieve second-order diversity. With the aid of Monte Carlo simulations, DSM is compared against state-of-the-art cooperative protocols, and it is shown to provide a better error probability.
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Submitted on : Thursday, April 12, 2018 - 5:41:31 PM
Last modification on : Thursday, October 11, 2018 - 4:52:10 PM

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Sandeep Narayanan, Marco Di Renzo, Fabio Graziosi, Harald Haas. Distributed Spatial Modulation: A Cooperative Diversity Protocol for Half–Duplex Relay–Aided Wireless Networks. IEEE Transactions on Vehicular Technology, Institute of Electrical and Electronics Engineers, 2016, 65 (5), pp.2947-2964. ⟨10.1109/TVT.2015.2442754⟩. ⟨hal-01765357⟩

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