Document Type : Research article
Authors
Department of Electrical Engineering, Yazd University, Yazd, Iran
Abstract
This paper proposes a new relaying protocol for transmitting from a cellular user to the base station with the joint cooperation of a Full-Duplex (FD)-enabled Device-to-Device (D2D) pair. In the proposed scheme, the receiver of the D2D acts as a relay, with the cooperation of its transmitter pair via D2D communication between them. The cooperation approach of the D2D receiver is chosen as Adaptive Decode-and-Forward (ADF), while the cooperation strategy of the D2D transmitter is chosen as either ADF, Amplify-and-Forward (AF), or Hybrid relaying protocol. These scenarios are named "Decode and Joint Cooperation," "Amplify and Joint Cooperation," and "Hybrid and Adaptive Joint Cooperation," respectively. The Average Symbol Error Probability (ASEP) of the system is studied over independent and identically distributed (i.i.d) complex Gaussian (Rayleigh envelope) channels, with perfect Channel State Information (CSI) in the presence of Residual Self-Interference (RSI) at the FD relays, as well as Co-Channel Interference (CCI). Moreover, closed-form and high Signal-to-Interference-plus-Noise Ratio (SINR) tight ASEP approximations are established. The optimum power allocation is formulated based on the approximate relations, and the optimal solutions and their characteristics are discussed in detail. Analytical comparisons and simulations confirm the theoretical results and demonstrate significant performance improvements.
Highlights
- A novel hybrid and adaptive joint relaying approach has been presented.
- Average Symbol Error Probability of the system is studied over independent and identically distributed (i.i.d) complex Gaussian channels, with perfect Channel State Information (CSI) in the presence of Residual Self-Interference (RSI) at the FD relays, as well as Co-Channel Interference (CCI).
- Closed-form and high Signal-to-Interference-plus-Noise Ratio (SINR) tight ASEP approximations are established.
- The optimum power allocation is formulated based on the approximate relations, and the optimal solutions and their characteristics are discussed in detail.
Keywords
- Cooperative communication
- Hybrid and adaptive DF/AF protocol
- Device-to-device (D2D) communication
- Full duplex communication
- Average symbol error probability
- Optimal power allocation
Main Subjects
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