Relay Node Selection Using Analytical Hierarchy Process (AHP) for Secondary Transmission in Multi-user Cooperative Cogni
In this paper, we have proposed a very new relay selection scheme based on the decision-making technique of analytical hierarchy process (AHP). Unlike many existing works where signal-to-interference-plus-noise ratio (SINR) is considered as the only param
- PDF / 232,812 Bytes
- 10 Pages / 439.37 x 666.142 pts Page_size
- 58 Downloads / 188 Views
Abstract In this paper, we have proposed a very new relay selection scheme based on the decision-making technique of analytical hierarchy process (AHP). Unlike many existing works where signal-to-interference-plus-noise ratio (SINR) is considered as the only parameter for relay selection, here the underlying decision criterion considers SINR at secondary destination (SD) as well as reliability and relative link quality (RLQ) of the relay node from destination.
Keywords Cognitive radio networks Cognitive relay Relay selection Secondary transmission Decision making Analytic hierarchy process
1 Introduction Cognitive radio (CR), the most contemporary buzz word [1–4] and one of the new long-term developments in wireless communication is empowered with the solution to alleviate the spectrum insufficiency problem by employing dynamic spectrum access where secondary user (SU) is allowed to access the licensed spectrum along with the primary user (PU) maintaining certain threshold value, i.e., interference temperature. First, cooperative diversity, then cooperative diversity [1, 5] based on relay selection has been studied in [6] for both the cognitive and non-cognitive systems, where transmission occurs in two channels. In this correspondence, we have specially concentrated on the formulation of the best relay selection criteria in cooperative CR networks [5, 7, 8]. Our major contributions can be summarized as J.S. Banerjee (&) A. Chakraborty Department of ECE, Bengal Institute of Technology, Kolkata 700150, India e-mail: [email protected] A. Chakraborty e-mail: [email protected] A. Chattopadhyay Department of ECE, University of Engineering & Management, Kolkata 700156, India e-mail: [email protected] © Springer Nature Singapore Pte Ltd. 2018 A. Kalam et al. (eds.), Advances in Electronics, Communication and Computing, Lecture Notes in Electrical Engineering 443, https://doi.org/10.1007/978-981-10-4765-7_77
745
746
J.S. Banerjee et al.
follows. First, we have proposed an AHP-based relay selection scheme [5, 9] which considers receiving SINR at secondary destination (SD) of the relay node, reliability, and relative link quality as the decision factors. Second, simulation shows a significant low latency in CR networks to select relay node using AHP.
2 System Model Here an underlay cognitive relay [5, 6] network has been considered where both primary transmitter (PT) and secondary transmitter (ST) transmit their data message parallelly to the primary destination (PD) and secondary destination (SD), respectively, occupying the same frequency band (see Fig. 1). In this correspondence, we have depicted a secondary network model consisting of a single Source (ST) as well as a single destination node (SD) along with K relaying nodes (shown in Fig. 1). Here, the concept of aggregate channel model has been adopted that treats both path loss and slow Rayleigh fading [6] to simulate the wireless environment. In the underlay approach, time is divided into number of slots tf j f
Data Loading...
