A Novel Quasi Orthogonal Space Frequency Code For Cooperative Communication

作者：Zeng, Rong; Liu, Tianjing^*

来源：IEEE Communications Letters, 2018, 22(3): 582-585.

DOI：10.1109/LCOMM.2017.2783448

• Quasi orthogonality recovering
• Quasi orthogonal space-frequency block coding(QOSFBC)
• Diversity gain
• Cooperative communication

A novel quasi orthogonal space-frequency block coding (QOSFBC) orthogonal frequency division multiplexing (QOSFBC-OFDM) scheme for doubly selective channels is proposed, which adopts the time difference of arrival (TDOA) parameter to calculate the complex phase rotation factor utilized in the pre-coding matrix. The novel QOSFBC employed in centralized cooperative scheme can obtain 3.056 diversity gain and full transmission rate at 15 dB SNR. Furthermore, the impact of TDOA on the performance of QOSFBC-OFDM system is investigated in the Rayleigh fading channels. Simulation results show that the proposed quasi-orthogonal recovering QOSFBC (QOR-QOSFBC) can achieve at most 12 dB more SNR gain after demodulation than the conventional QOSFBC.

• 出版日期2018-3
• 单位杭州电子科技大学