Alamouti code based on block repetition in FBMC/OQAM systems

Digital Communications and Networks

卷:8

Xing Zheng¹  Tao Jiang²  Dejin Kong²  Yukang Tian³  Yue Zhang³ 

[1] State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan, China;

[2] School of Electronic and Electrical Engineering, Wuhan Textile University, Wuhan, China;

[3] Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China;

关键词: Alamouti;    Filter-bank multicarrier;    Block repetition;    Imaginary interference;   

DOI  :  

来源: DOAJ

【 摘 要 】

In this paper, we address the Alamouti code in Filter-Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) and propose a novel block-wise Alamouti code, in which a repeated block is designed to eliminate the imaginary interference among FBMC/OQAM symbols. The proposed approach exhibits a higher spectral efficiency than the conventional block-wise Alamouti scheme, as only one column of zero symbols is used as a guard interval instead of two. Furthermore, compared to the conventional scheme, the bit error ratio is improved in the proposed block-wise Alamouti, as the assumption on channel invariance at two adjacent subcarriers is not required. Simulation results indicate that, with a significantly reduced overhead, the proposed Alamouti scheme achieves better performance over the conventional block-wise Alamouti scheme.

【 授权许可】

Unknown