【摘要】 基站节点间回程链路的有限容量制约着蜂窝移动通信系统中多点协作网络的性能。为了有效利用回程链路容量资源,提高节点协作增益,该文以上行多用户的两节点协作网络单元为研究对象,提出了一种基于压缩—转发及用户配对的多点协作多载波传输方式;建立了在回程链路容量有限的约束下,用户配对、载波映射、压缩噪声设计及载波间回程链路容量分配的联合优化问题;提出了一种基于轮换优化的低复杂度求解算法。仿真结果表明:与随机及均等资源分配方法相比,该算法可在有限回程链路容量条件下有效提高网络的和速率。更多还原

【Abstract】 The capacity limited backhaul limits the performance of the coordinated multi-point transmission and reception(CoMP)networks in cellular mobile communication systems.For this reason,this paper addresses the issues of efficient backhaul resource utilization and cooperative gain improvement.The case that two base stations serve multiple users via uplink multi-carrier system is considered in this paper.A novel multi-point cooperative scheme based on user pairing and compress-and-forward relay technique was proposed with a joint optimization problem of user pairing,subcarrier mapping,compression noise design and backhaul capacity sharing between different pairs(subcarriers)being formulated.A low complexity algorithm based on alternating optimization strategy was proposed to solve this mixed integer programming problem.Simulation results show that this allocation algorithm significantly improves the system capacity compared with the random or fair alternatives.更多还原