本文以基于OFDM技术的第四代移动通信系统为背景，在多用户信息论的指导下，研究系统中的资源优化分配问题。
In this dissertation, under the guidance of multiuser information theory, the resource optimization techniques in both OFDM systems and cooperative communication systems are intensively studied.
首先提出了第四代移动通信系统(4 G)的主要技术目标，并对第四代移动通信系统(4 G)采用的网络构架进行了介绍。
Main technology aims of 4g mobile communication system are presented and the network structure of 4g mobile communication system is introduced.
作为第四代移动通信的核心技术，正交频分复用(OFDM)系统愈来愈引起业界的普遍关注。
As a key technology for 4 ~ (th) Generation wireless mobile communication system, OFDM has drawn more and more attention in communication fields.
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