【摘要】 该文研究了衰落信道条件下的无线资源分配问题。提出了一种适用于多用户OFDM系统中的多业务间子载波借调的自适应资源分配机制。该机制能够联合考虑信道衰落情况和业务的服务质量要求,在不同的业务间调整和借用子载波分配来最大化系统的容量和性能。仿真结果表明,该文提出的分配机制能改善OFDM系统的性能。更多还原

【Abstract】 In this paper, an adaptive resource allocation scheme of multi-service subcarrier adjusting and borrowing for multi-user OFDM-based systems is proposed. According to channel fading condition and quality of service of users, the scheme is used to maximize the system capacity and performance by adjusting and borrowing subcarrier among multi-service. The simulation results illustrate that the scheme proposed in this paper can improve performance OFDM-based systems.更多还原