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Volume 28 Issue 9
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Deng Dan, Zhu Jin-Kang. Study on Random-Rotation Quasi-orthogonal Space-Time Block Code[J]. Journal of Electronics & Information Technology, 2006, 28(9): 1626-1629.
Citation: Deng Dan, Zhu Jin-Kang. Study on Random-Rotation Quasi-orthogonal Space-Time Block Code[J]. Journal of Electronics & Information Technology, 2006, 28(9): 1626-1629.

Study on Random-Rotation Quasi-orthogonal Space-Time Block Code

  • Received Date: 2005-01-06
  • Rev Recd Date: 2005-07-08
  • Publish Date: 2006-09-19
  • In order to improve the performance of Quasi-Orthogonal SpaceTime Block Code(QO-STBC), a Random-Rotation QO-STBC(RR-QO-STBC) is proposed. This transmission diversity scheme randomly rotates every information symbol vector, thus the inter-symbol interference between multi-antennas of QO-STBC is randomized and alleviated. Simulation results suggest, in 41 MIMO QPSK modulation system, under the ML detection rule,the proposed scheme outperforms the conventional QO-STBC about 4dB when the BER is 10-5, and also better than ST-LCP 0.51dB when the BER is below 10-4; The new scheme owns similar performance with the CFR scheme when SNR is above 16dB. The performance loss due to the limitation of number of random-rotation matrixes in the practical scenario is investigated. When the number of matrixes is greater than 16, the performance loss is negligible.
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