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LTE-Advanced中OFDM技术的研究进展
丁市召,张祖凡
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(重庆邮电大学，重庆 400065)

摘要:

OFDM技术以其频谱利用率高、抗多径衰落、频谱资源灵活分配等优势，成为新一代移动通信中的关键技术。介绍了LTE-A中关键技术OFDM的发展形势，并对OFDM与其它多址技术、MIMO技术相结合在LTE-A中的发展及其BR-OFDMA技术优化进行了分析。基于此分析结果，提出了下一步的研究发展方向。

关键词: 多输入多输出正交频分复用频谱利用率块重复-OFDMA

DOI：

基金项目:国家科技重大专项资助项目（2009ZX03003-006-01 & 2009ZX03001-004-02）；重庆市科技攻关计划项目(CSTC，2010AC2143)；重庆市教育委员会科学技术研究项目（KJ080516）

Development Progress of OFDM Technology for LTE-Advanced System

DING Shi-zhao,DING Shi-zhao

(Chongqing University of Posts and Telecommunications，Chongqing 400065，China)

Abstract:

OFDM has become a key technology for its high spectrum efficiency, antimultipa th fading ability,the flexibility in the allocation of spectrum resources and ot her adv antages in modern mobile communication.This paper introduces the current situati on of LTE-A key technology,or OFDM,makes the followin g analysis of OFDM in the development of LTE-A: the combining with multiple acce ss technology, MIMO technology, and Block RepeatOFDM Access(BR-OFDMA). Accordi ng to the analysed result,it points out the developing trend of OFDM technology.

Key words: MIMO OFDM spectrum utilization BR-OFDMA