Strategic Subcarrier Allocation for Cooperative OFDMA Relaying Network

Performance optimization of communication networks with quality of services (QOS) considerations for all active users is highly desirable. The growth of wireless multimedia applications requires high-speed and reliable communication over wireless channels of system. Throughput and fairness are important conflicting performance parameter in resource allocation for non-cooperative and cooperative OFDMA system for downlink transmission. Maximize the system throughput creates problem of unfairness among all user and while maintaining fairness, system throughput will degrade accordingly. In this paper, we proposed algorithm to provide a balanced approach to maintain throughput and fairness in the system and we designed the resources allocation algorithm for cooperative OFDMA system for downlink transmission, that algorithm maintain the fairness among the all user without affecting the throughput of the system. Our proposed subcarrier allocation fills the gap between the fairness-oriented and throughput-oriented algorithms and provides a balanced solution for subcarrier allocation in the system.