多用户下行OFDM系统中的时间公平机会调度研究

本文基于单信道系统中时间公平机会调度的研究,提出了3种推广到多用户下行OFDM多载波系统中的方案.这3种方案均以子载波为单位进行调度,充分利用信道的时变和频率选择特性:方案1对每个子载波单独调度,控制参数以时隙为单位更新;方案2将时频二维的子载波串在一起调度,控制参数以子载波为单位更新;方案3同方案2,但控制参数以时隙为单位更新.仿真结果表明,这3种方案均能够在保证时间公平性的前提下,相对非机会调度较大程度地提高系统性能.并且,这3种方案对子载波数和用户数没有限制,简单高效地使用有限的无线资源.

Temporal fairness opportunistic scheduling in multiuser downlink OFDM system

Three temporal fairness opportunistic scheduling schemes are proposed based on the research of single channel system,in order to manage the parallel subcarriers in the downlink OFDM system to utilize the time varying and frequency selectivity.The first scheme schedules each subcarrier separately,and updates control parameters per slot;the second one transfers the time-frequency two-dimensional channel resource to one-dimensional equivalent channel,and updates control parameters per subcarrier per slot;the l...