摘要：4g指的是第四代移动通信技术。
Abstract: : 4g refers to the fourth generation mobile communication technology.
第三章研究了第四代移动通信演进现状。
Chapter 3 studies the evolution status for Fourth Generation of Mobile Communication.
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.
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(4G)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.
LTE - A作为LTE的进一步增强技术，是在LTE基础上的平滑演进，将作为3gpp向itu(国际电信联盟)提交的4g(第四代移动通信)候选标准。
As a further enhancement technology of LTE, LTE-A is a smooth evolution based on LTE and will be the candidate of 4g (the 4th Generation Mobile Communication) standards submitted to ITU by 3gpp.
在电信中，4g是手机的移动通信技术标准的第四代。
In telecommunications, 4g is the fourth generation of mobile phone mobile communication technology standards.
第四代无线通信中，多媒体移动服务需要高速率的传输机制。
Multimedia mobile services afforded in the 4th generation wireless communication require high bit-rate transmission technology.
第四代无线通信中，多媒体移动服务需要高速率的传输机制。
Multimedia mobile services afforded in the 4th generation wireless communication require high bit-rate transmission technology.
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