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Selective receiver switching scheme for space time block coding with full code rate and non-orthogonal design

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2 Author(s)
Liu, L. ; Dept. of Electron. & Inf. Eng., Chonbuk Nat. Univ., Jeonju ; Lim, M.-S.

It is desirable to construct a transmission matrix with full code rate as well as full transmit diversity in the design of space time block coding (STBC). For an arbitrary complex constellation, only full rate and full diversity signal matrix with size 2 by 2 is possible, said as Alamouti Code. For a real signal matrix with a size above 8 by 8, it is also impossible to acquire full code rate and full transmit diversity simultaneously. An efficient selective receiver switching scheme is proposed for STBC with the full code rate and non-orthogonal design. In the proposed scheme with the aid of beamforming, the authors divide the received signals into two groups according to the encoded matrix. By this way, the authors can eliminate the interference from the neighbouring signals almost by half. The simulation results with the example of matrix demonstrate that the proposed scheme can provide the improved performance and more under imperfect channel estimation.

Published in:

Communications, IET  (Volume:2 ,  Issue: 5 )