单小区多用户下行OFDM系统资源分配算法研究

多用户正交频分复用(OFDM)系统中,充分利用多载波系统的多用户分集进行合理无线资源分配,能够显著提高系统容量和最大限度提高频谱利用率。经过广泛的研究,很多有效资源分配算法已经被提出来。重点讨论了单小区多用户OFDM系统关于子载波、比特及功率等无线资源的分配问题,介绍现有的研究成果,包括常见的模型及求解方法,并介绍近期的研究热点,包括多小区系统、多入多出(MIMO)系统等。

Resource allocation algorithm for single cell downlink of multiuser OFDM system

In the multiuser system of Orthogonal Frequency Division Multiplexing(OFDM),exploiting multiuser diversity and assign wireless resource reasonably can improve the performance of the system,and fully exploit the wireless spectrum.Many effective allocation algorithms have been put forward.This paper addressed the resource allocation problem in single cell downlink OFDM system,introduced the existing studies such as system models and algorithms,and presented some research hotspots,such as multiple cell system,Multiple Input Multiple Output(MIMO) and multicast system.