Smart Relay Selection Scheme Based on Fuzzy Logic with Optimal Power Allocation and Adaptive Data Rate Assignment.

Nayab Taj; Mohammad Haseeb Zafar; Shakeel Ahmad Waqas; Humaira Rehman; Madini O. Alassafi; Imran Khan

Nayab Taj Department of Electrical Engineering, University of Engineering & Technology, Peshawar, Pakistan; Department of Electrical Engineering, University of Engineering & Technology, Mardan, Pakistan

Mohammad Haseeb Zafar Department of Electrical Engineering, University of Engineering & Technology, Peshawar, Pakistan ; Department of Information Technology, King Abdulaziz University, Jeddah, Saudi Arabia

Shakeel Ahmad Waqas Department of Electrical Engineering, University of Engineering & Technology, Mardan, Pakistan

Humaira Rehman Department of Electrical Engineering, University of Engineering & Technology, Mardan, Pakistan

Madini O. Alassafi Department of Information Technology, King Abdulaziz University, Jeddah, Saudi Arabia

Imran Khan Department of Electrical Engineering, University of Engineering & Technology, Peshawar, Pakistan

In this paper fuzzy logic-based algorithm with improved process of relay selection is presented which not only allocate optimal power for transmission but also help in choosing adaptive data rate. This algorithm utilizes channel gain, cooperative gain and signal to noise ratio with two cases considered in this paper: In case-I nodes do not have their geographical location information while in case-II nodes are having their geographical location information. From Monte Carlo simulations, it can be observed that both cases improve the selection process along with data rate assignment and power allocation, but case-II is the most reliable with almost zero probability of error at the cost of computational complexity which is 10 times more than caseI.