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所属单位：电子信息工程学院
发表刊物：CHINESE JOURNAL OF ELECTRONICS
关键字：Spatial modulation (SM) Cooperative communication Amplify and forward protocol Diversity gain Average bit error rate
摘要：By combing Spatial modulation (SM) with the Amplify-and-forward (AF) cooperative communication, 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 (P-a) and the error probability of symbol estimation (P-d), which constitutes the overall average BER, are derived, respectively. As a result, tightly approximate closed form expressions of P-a and P-d 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 N-r + 1 is obtained for the system with N-r 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 N-r increases due to higher diversity gain.
ISSN号：1022-4653
是否译文：否
发表时间：2019-01-01
合写作者：Pan Qing,王成华
通讯作者：虞湘宾