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- 저자 : ( Bangning Zhang ) (검색결과 2 건)
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Performance Analysis of Amplify-and-Forward Two-Way Relaying with Antenna Correlation
( Zhangjun Fan ),( Kun Xu ),( Bangning Zhang ),( Xiaofei Pan ) 한국인터넷정보학회 2012 KSII Transactions on Internet and Information Syst Vol.6 No.6
This paper investigates the performance of an amplify-and-forward (AF) two-way relaying system with antenna correlation. The system consists of two multiple-antenna sources, which exchange information via the aid of a single-antenna relay. In particular, we derive the exact outage probability expression. Furthermore, we provide a simple, tight closed-form lower bound for the outage probability. Based on the lower bound, we obtain the closed-form asymptotic outage probability and the average symbol error rate expressions at high signal-to-noise ratio (SNR), which reveal the system`s diversity order and coding gain with antenna correlation. To investigate the system`s throughput performance with antenna correlation, we also derive a closed-form lower bound for the average sum-rate, which is quite tight from medium to high SNR regime. The analytical results readily enable us to obtain insight into the effect of antenna correlation on the system`s performance. Extensive Monte Carlo simulations are conducted to verify the analytical results.
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( Zhangjun Fan ),( Daoxing Guo ),( Bangning Zhang ),( Andli Zeng ) 한국인터넷정보학회 2012 KSII Transactions on Internet and Information Syst Vol.6 No.12
In this paper, we analyze the performance of an amplify-and-forward (AF) two-way relaying system, where two sources exchange information via the aid of an intermediate relay that is selected among multiple relays according to max-min criterion. We consider a practical scenario, where one source-relay link undergoes Rician fading, and the other source-relay link is subject to Rayleigh fading. To be specific, we derive a tight lower bound for the outage probability. From this lower bound, the asymptotic outage probability and average symbol error rate (SER) expressions are derived to gain insight into the system performance at high signal-to-noise ratio (SNR) region. Furthermore, we investigate the optimal power allocation (PA) with fixed relay location (RL), optimal RL with fixed PA and joint optimization of PA and RL to minimize the outage probability and average SER. The analytical expressions are verified through Monte Carlo simulations, where the positive impact of Rician factor on the system performance is also illustrated. Simulation results also validate the effectiveness of the proposed PA and relay positioning schemes.
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