A low complexity detection algorithm for m-QAM in spatial modulation systems

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Wang, Qiong^1 ; Wu, Youzhi^1 ; Du, Xiaole^1 ; Yin, Zhijie^1

School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China^1

关键词: Bit error rate (BER) performance;    Constellation points;    High order QAM;    Low-complexity detections;    M ary quadrature amplitude modulations;    Near-optimal;    Spatial modulations;    Transmission systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012150/pdf
DOI  :  10.1088/1755-1315/69/1/012150

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This paper proposes a low complexity detection method for M-QAM (M-ary quadrature amplitude modulation) in spatial modulation (SM) systems. The new method utilizes the thought of constellation layering to modify constellation points search mode in QAM, which reduces the calculated amount significantly, and the total complexity will not increase with the size of constellation linearly. Simulation results show that the method can work well in high order QAM transmission systems. The novel method provides a significant reduction in computational complexity while keeping the near-optimal bit-error-rate (BER) performance.