叠加调制下资源分配的自适应算法  

The Resources Optimization Allocation Under Superposition Modulation

作　　者：陈斌[1] 朱轶[1] 闫述[1] 

机构地区：[1]江苏大学计算机科学与通信工程学院,镇江212013

出　　处：《无线通信技术》2012年第4期30-34,共5页Wireless Communication Technology

摘　　要：为了对抗无线通信网络中无线信道多径衰落的影响,提高系统的性能,采用了叠加调制方式的协同分集技术,并根据信道的时变特性,提出了功率/带宽的联合优化的自适应算法。分析了叠加调制(superposition modulation)协同方式的实现方法,将该协同方式与传统协同通信方式行了比较。推导出了叠加调制方式下的信道容量,以最大化信道容量为目标计算出节点发送信号的功率以及带宽。仿真结果表明,对叠加调制的协同方式下的资源分配的自适应算法可以有效地提高系统容量。The cooperative diversity technology of superposition modulation was proposed,which can mitigate the influence of an Ad Hoc channel multipath fading and improve the performance of the system.The power/bandwidth joint optimization algorithm is proposed,according to the channel time-varying.Analysis the approach of cooperative diversity technology of superposition modulation,and compare superposition modulation with conditional cooperative diversity technology.Calculate the channel capacity under superposition modulation,and deduced the power/bandwidth,which is aimed to maximize the channel capacity.The simulation results show that it can improve the capacity of the system by the power/bandwidth joint optimization.

关 键 词：协同分集 叠加调制 资源分配 自适应 

分 类 号：TN92[电子电信—通信与信息系统]