首页|Performance of Cooperative Spatial Modulation with AF Protocol in Wireless Relay Network?

Performance of Cooperative Spatial Modulation with AF Protocol in Wireless Relay Network?

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By combing Spatial modulation (SM) with the Amplify-and-forward (AF) cooperative communica-tion, a cooperative SM scheme with AF (AF-SM) protocol is presented, and the corresponding Bit error rate (BER) performance is investigated. Based on the performance analysis, the error probability of antenna index estimation (Pa) and the error probability of symbol estimation (Pd), which constitutes the overall average BER, are derived, respectively. As a result, tightly approximate closed-form expressions of Pa and Pd are attained, respectively. Using these expressions, the closed-form overall average BER is achieved. During the analysis, the computational complexity of AF-SM detector is also provided in terms of the complex addition and multiplication numbers. Besides, the asymptotic BER at high SNR and the corresponding diversity gain are further derived, and the resultant diversity gain of Nr + 1 is obtained for the system with Nr receive antennas. Simulation results show that our theoretical analysis is valid, and provides good performance evaluation method for cooperative SM system. Moreover, the BER performance can be effectively improved as Nr increases due to higher diversity gain.

Spatial modulation (SM)Cooperative communicationAmplify and forward protocolDiversity gainAverage bit error rate

YU Xiangbin、PAN Qing、WANG Cheng

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College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China

This work is supported by the National Natural Science Foundation of ChinaNatural Science Foundation of Jiangsu ProvinceOpen Research Fund of National Mobile Communications Research LaboratorySix Talent Peaks Project of JiangsuFundamental Research Funds for the Central Universities

61571225BK201812892017D03DZXX-007NS2014038

2019

10.1049/cje.2018.11.007

中国电子杂志(英文版)

中国电子杂志(英文版)

CSTPCDCSCDSCIEI
ISSN：1022-4653
年,卷(期)：2019.28(1)
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