Improved Pair-Wise Detections of Differential Quasi-Orthogonal Space-Time Modulation with Four Transmit Antennas

Electronics

Seunghyeon Kim¹  Taejin Jung¹  Hojun Kim²  Yulong Shang³ 

[1] Department of ICT Convergence System Engineering, Chonnam National University, Gwangju 61186, Korea;R&D Team, Networks Business, Samsung Electronics, Suwon 16677, Korea;School of Electrical and Information Engineering, Jiangsu University of Technology, Changzhou 213000, China;

关键词: space time codes;    differential space time modulation;    differential detection;    pair-wise detection;    maximum likelihood detection;   

DOI  :  10.3390/electronics10141675

来源: DOAJ

【 摘 要 】

In this paper, we propose new complex and real pair-wise detection for conventional differential space–time modulations based on quasi-orthogonal design with four transmit antennas for general QAM. Since the new complex and real pair-wise detections allow the independent joint ML detection of two complex and real symbol pairs, respectively, the decoding complexity is the same as or lower than conventional differential detections. Simulation results show that the proposed detections exhibit almost identical performance with an optimum maximum-likelihood receiver, as well as improved performance compared with conventional pair-wise detections, especially for higher modulation order.

【 授权许可】

Unknown