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Closed-Form Expression for the Symbol Error Probability in Full-Duplex Spatial Modulation Relay System and Its
Le Van Nguyen1, Ba Cao Nguyen1, Xuan Nam Tran1
1Advanced Wireless Communications Group, Le Quy Don Technical University, Hanoi 11917, Vietnam.
Sensors (Basel, Switzerland)
|December 11, 2019
Summary
This study analyzes full-duplex (FD) spatial modulation (SM) relay systems, deriving a symbol error probability (SEP) expression. An optimal power allocation algorithm is proposed to mitigate residual self-interference (RSI) and enhance performance.
Area of Science:
- Wireless Communication
- Signal Processing
- Information Theory
Background:
- Full-duplex (FD) and spatial modulation (SM) are key techniques for enhancing spectral efficiency in wireless systems.
- Combining FD and SM in relay systems offers potential performance gains, but faces challenges like residual self-interference (RSI).
Purpose of the Study:
- To analyze the performance of a full-duplex spatial modulation (FD-SM) decode-and-forward (DF) relay system.
- To derive a closed-form expression for symbol error probability (SEP) in FD-SM DF relay systems.
- To propose and evaluate a power allocation algorithm for mitigating RSI and improving system performance.
Main Methods:
- Performance analysis of the FD-SM DF relay system.
- Derivation of a closed-form symbol error probability (SEP) expression.
- Development and application of a power allocation algorithm to counteract residual self-interference (RSI).
Main Results:
- A closed-form expression for the symbol error probability (SEP) of the FD-SM DF relay system was derived.
- A novel power allocation algorithm effectively compensated for residual self-interference (RSI).
- Numerical and simulation results validated the derived SEP expression and the proposed power allocation strategy.
Conclusions:
- The derived SEP expression accurately characterizes the performance of FD-SM DF relay systems.
- The proposed power allocation algorithm significantly improves system SEP by mitigating RSI.
- The combination of FD and SM in relay systems, with effective RSI management, offers a promising approach for high spectral efficiency.
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