scholarly journals Performance of cooperative multi-hop multiuser relaying networks

2018 ◽  
Vol 15 (2) ◽  
pp. 213-224
Author(s):  
Aleksandra Panajotovic ◽  
Nikola Sekulovic ◽  
Aleksandra Cvetkovic ◽  
Daniela Milovic
Keyword(s):  
Spectral Efficiency ◽  
Error Probability ◽  
Scheduling Algorithm ◽  
Signal Transmission ◽  
Maximal Ratio Combining ◽  
Opportunistic Scheduling ◽  
Symbol Error Probability ◽  
Relay System ◽  
Cooperative Relays ◽  
Average Symbol Error Probability

This paper presents both capacity and error performances of cooperative multi-hop multiuser relay system. All multi-hop cooperative relays in the system apply maximal-ratio combining (MRC) scheme, while signal transmission to end users is carried out using opportunistic scheduling algorithm. Numerical results for spectral efficiency and average symbol error probability (ASEP) for considered system are presented and discussed.

scholarly journals Closed-Form Expression for the Symbol Error Probability in Full-Duplex Spatial Modulation Relay System and Its Application in Optimal Power Allocation

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5390 ◽  
Author(s):  
Le Van Nguyen ◽  
Ba Cao Nguyen ◽  
Xuan Nam Tran ◽  
Le The Dung
Keyword(s):  
Power Allocation ◽  
Error Probability ◽  
Spatial Modulation ◽  
Full Duplex ◽  
Closed Form Expression ◽  
Optimal Power Allocation ◽  
Symbol Error Probability ◽  
Form Expression ◽  
Relay System ◽  
Optimal Power

Full-duplex (FD) communication and spatial modulation (SM) are two promising techniques to achieve high spectral efficiency. Recent works in the literature have investigated the possibility of combining the FD mode with SM in the relay system to benefit their advantages. In this paper, we analyze the performance of the FD-SM decode-and-forward (DF) relay system and derive the closed-form expression for the symbol error probability (SEP). To tackle the residual self-interference (RSI) due to the FD mode at the relay, we propose a simple yet effective power allocation algorithm to compensate for the RSI impact and improve the system SEP performance. Both numerical and simulation results confirm the accuracy of the derived SEP expression and the efficacy of the proposed optimal power allocation.

Moment-Generating Function Based Symbol Error Probability Comparison of M-ary Modulation Techniques in Fading Environment

2020 ◽  
Vol 17 (11) ◽  
pp. 5085-5090
Author(s):  
Kapil Gupta ◽  
Rachna Mehta
Keyword(s):  
Phase Shift ◽  
Generating Function ◽  
Error Probability ◽  
Moment Generating Function ◽  
Maximal Ratio Combining ◽  
Phase Shift Keying ◽  
Symbol Error Probability ◽  
Differential Phase Shift ◽  
Receiver Diversity ◽  
Shift Keying

This paper analyses and compare Symbol Error Probability (SEP) of M-ary modulation in different fading environment. Maximal ratio combining (MRC) technique with N branch receiver diversity is taken into consideration for the analysis. Expression for probability of symbol error for M-ary frequency shift keying/M-ary phase shift keying/M-ary differential phase shift key/and M-Level Quadrature Amplitude Modulation are obtained through moment-generating function (MGF) approach. Conventional integration process has probability of uncertainty and erroneousness because of composite mathematical calculations and infinite integration bounds. MGF method is used to avoid complex numerical computation for calculation of SEP. Comparison of SEP for diverse values of Rician factor “K”, Nakagami-M factor, modulation order “M” and diversity order “N” has been carried out.

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