WLAN中基于多包接收的跨层资源分配方案  

Cross-Layer Resource Allocation Scheme for WLAN Based on Multi-Packet Reception

作　　者：徐雷[1] 徐大专[1] 张小飞[1] 王俊波[1,2] 徐淑芳[1] 

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京210016 [2]东南大学移动通信国家重点实验室,江苏南京210016

出　　处：《电子学报》2011年第10期2402-2406,共5页Acta Electronica Sinica

基　　金：江苏省产学研基金(No.BY2009101);航空基金(No.2009ZC52036);国家自然科学基金(No.60801052);东南大学移动通信实验室开放研究基金(No.2010D01);区域光纤通信网与新型光通信系统国家重点实验室开放课题(No.2008SH06);国家科技重大专项(No.2010ZX03003-002)

摘　　要：针对WLAN,提出了一个基于多包接收的跨层资源分配方案.本文首先给出多个用户"共享"子信道的条件,并提出了子信道"独占"和"共享"混合模式的信道分配方案;然后,推导了满足用户QoS要求的功率和比特加载表达式.仿真结果表明:本文提出方案不仅能有效提高系统吞吐量,而且能降低平均包延时;并且具有计算复杂度低的特点.Tailored for the WLAN,we propose a cross-layer resource allocation schemes based on multi-packet reception.Firstly,the condition of sharing the subchannel by more than one user is obtained.Secondly,the subchannel allocation scheme including ＂exclusive＂ and ＂share＂ modes are proposed.Finally,the expression of power and bit loading which meets the QoS requirement is derived.Analysis and simulation show that proposed scheme not only improves the system throughput efficiently but also reduces the average packet delay and has low computational complexity.

关 键 词：无线局域网 多包接收 跨层设计 MIMO-OFDM DCF协议 

分 类 号：TN929.5[电子电信—通信与信息系统]