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        Source-assisting strategy for differential distributed space time block codes

        Author
        Nwanekezie, Nnamdi
        Owojaiye, Gbenga
        Sun, Yichuang
        Attention
        2299/14680
        Abstract
        In this paper, a source-assisting differential distributed space time block coding (SA-DDSTBC) scheme is proposed for cooperative networks. Firstly, in most existing works on distributed space time block coding (DSTBC), the destination node is assumed to have perfect channel state information (CSI), thus, signal recovery is straight forward. In practice however, some scenarios exist whereby the destination node is unable to acquire CSI. Consequently, this work incorporates differential concepts with DSTBC to facilitate signal recovery in cooperative networks operating in environments where CSI acquisition is impractical. Secondly, different from most works on DSTBC which assume that the source-destination link is unavailable, the proposed scheme employs a source-assisting (SA) strategy that exploits the additional diversity path provided by the source-destination link. The numerical and simulation results obtained illustrate that compared to the conventional DSTBC schemes, the proposed SA-DDSTBC scheme achieves non-coherent signal recovery and improved BER and diversity performance with negligible increase in decoding complexity.
        Publication date
        2013-12-01
        Published in
        IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
        Published version
        https://doi.org/10.1109/PIMRC.2013.6666525
        Other links
        http://hdl.handle.net/2299/14680
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