一种多用户自适应协作信道分配方案

摘要

We study the channel allocation scheme for cooperation network with the aim of improving system throughput in addition to meeting QoS requirements. A suboptimal heuristic algorithm is proposed and implemented by using virtual nodes. The method simplifies joint channel allocation and cooperation by considering direct transmissions only. The proposed algorithm achieves adaptive allocation. Simulation results indicate that the proposed algorithm significantly outperforms previous works in terms of system throughput and QoS.%研究了多用户协作通信系统中最大化系统吞吐量的上行信道分配算法,提出一种启发式的信道分配协作方案,可兼顾用户QoS要求和系统吞吐量.该方案通过生成虚拟的节点模拟协作功能,将协作信道分配问题简化为一个传统的信道分配问题,并将分配给虚拟节点的信道用于协作,以实现协作和信道分配的自适应.仿真结果表明,在多用户系统中,该算法在满足用户QoS及提高系统吞吐量方面都能获得较好的性能.