Throughput maximization with multiuser non-selfish cognitive relaying in CR networks

Authors:
Peng Gong;Jae Hyun Park;Jung Min Yoo;Bo-Sun Yu;Duk Kyung Kim
Affiliations:
Dept. of Information and Communication Engineering, INHA University, South Korea;Dept. of Information and Communication Engineering, INHA University, South Korea;Dept. of Information and Communication Engineering, INHA University, South Korea;Dept. of Information and Communication Engineering, INHA University, South Korea;Dept. of Information and Communication Engineering, INHA University, South Korea
Venue:
ISWPC'09 Proceedings of the 4th international conference on Wireless pervasive computing
Year:
2009

Citing 3
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Abstract

With coexistence of primary and Cognitive Radio (CR) networks, the benefits of Non-selfish Symbiotic Cognitive Relaying (NSSCR) were illustrated in previous work by considering single cognitive radio user (CRU) cooperation. However, with cooperation from multiple CRUs instead of a single CRU, additional degree of diversity gain as well as power gain can be achieved. Thus, in this paper a Multiuser Non-Selfish Symbiotic Cognitive Relaying (MNSCR) is further proposed for the coexistence of primary and CR networks. In a symbiotic architecture, the PU (PU) with weak channel quality will initiate a full duplex amplify-and-forward (AF) cooperative transmission from multiple CRUs. As a reward, the PU would like to give an incentive time for CR data transmission. Instead of utilizing incentive time duration immediately by selfish CRUs who participated in the cooperation, the non-selfish CRUs might selflessly give incentive time duration to a CRU with a better channel quality. Simulation results shows that with proposed MNSCR the capacity of CR network can be further improved.