Abstract
This paper investigates the outage probability and ergodic capacity performances for full-duplex mode in two-way amplify-and-forward relay channels. The two-way relay channels which consist of two source nodes and a single relay node working in full-duplex mode, are assumed as independent and identically distributed as Rayleigh fading. The self-interference or loop interference of the relay is unavoidably investigated for full-duplex mode. And the close-form expressions for the outage probability and ergodic capacity of full-duplex mode are derived, considering both loop interference and the coefficients of two-way relay amplify-and-forward channels. To further facilitate the performance of full-duplex mode, the half-duplex modes over different transmission time slots are analyzed. Simulation results point out the effect of loop interference on outage probability and ergodic capacity of two-way amplify-and-forward relay channels with full-duplex mode and show that full-duplex mode can achieve better performance in terms of capacity and even outperform half-duplex modes in the presence of loop interference.
Highlights
Next-generation wireless communication requires higher spectral efficiency and broad coverage to support the quality of service (QoS) needed for a wide variety of multimedia applications
The results of Monte Carlo simulation are quite suitable with the theoretical analytical ones in the presence of different loop interference (LI), which justify the derivation of outage probability of FD mode above
We conducted a study of two-way AF relay channels with FD mode
Summary
Next-generation wireless communication requires higher spectral efficiency and broad coverage to support the quality of service (QoS) needed for a wide variety of multimedia applications. In two-way relay channels with half-duplex mode, the data is transmitted between sources and relay in different time slots to avoid the influence of interference caused by relay self-feedback. Considering full-duplex mode in two-way AF relay channels, the relay amplifies and forwards signals to the destination, receiving the signals from the source, which save the time and space resources of transmission and can obviously bring in an improvement of the capacity. We will study the performance of FD mode, mainly about the outage probability and ergodic capacity in two-way AF relay channels and the effect of loop interference on the performance.
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