论文部分内容阅读
针对放大-转发OFDMA中继网络上行链路,考虑具有不同QoS要求的异构业务场景,在用户与中继独立功率约束条件下,提出一种子载波对匹配分配与功率分配算法,以实现在满足非弹性用户速率需求前提下,最大化弹性用户和速率的目标.为降低算法计算复杂度,将原混合二进制整数规划问题分解为子载波对匹配分配,非弹性用户与中继、弹性用户与中继联合功率分配三个子问题,从而实现计算复杂度从指数级别到线性的下降.仿真结果显示,所提方案能够满足非弹性用户的速率需求,且弹性用户的和速率容量明显高于等功率分配原则和未进行子载波匹配下的资源分配算法.
Considering the heterogeneous service scenarios with different QoS requirements for the uplink of OFDMA relay network, a subcarrier pair matching allocation and power allocation algorithm is proposed under the constraints of user and relay independent power, In order to reduce the computational complexity of the algorithm, the original mixed binary integer programming problem is decomposed into subcarrier matching allocation, inelastic user and relay, flexible user and medium Following the three subproblems of joint power allocation, the computational complexity is reduced from exponential to linear.The simulation results show that the proposed scheme can satisfy the rate requirement of inelastic users and the rate capacity of flexible users is obviously higher than that of equal power allocation The principle and resource allocation algorithm without subcarrier matching.