Cooperative Diversity via Simple Relaying with Quasi-Orthogonal Space-Time Block Code

Tomoya YAMAOKA  Yoshitaka HARA  Kazuaki ISHIOKA  Teruyuki HARA  Takaya YAMAZATO  

B - Abstracts of IEICE TRANSACTIONS on Communications (Japanese Edition)   Vol.J97-B   No.12   pp.1213-1223
Publication Date: 2014/12/01
Online ISSN: 1881-0209
Type of Manuscript: PAPER
cooperative diversity,  space-time,  quasi-orthgonal space-time block code,  simple relay,  

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We have been proposed cooperative diversity receiving ABBA code as cooperative diversity via simple relaying with QOSTBC (Quasi-Orthogonal Space-Time Block Code). This scheme offers coding gain by permutation of space-time coded signal sequences in the relay nodes. So the relay nodes don't need carrier recovery and complete the signal process in the intermediate frequency band. In this paper, we discuss two improved scheme with various channel model. These schemes improve the previous scheme without loss of the merit in its relay process. Moreover, we sum up cooperative diversity via simple relaying with QOSTBC to discuss these schemes with various channel model. We evaluate effect of these scheme in terms of signal matrixes and simulate bit error rate of the prposed and improved scheme with with various channel model, respectively.