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。
OFDM has become a key technology forits high spectrum efficiency, anti-multipath fading ability, the flexibility in the allocation of spectrum resources and other advantages in modem mobile communication. This paper introduces the current situation of LTE - A key technology, or OFDM, makes the following analysis of OFDM in the development of LTE - A: the combining with multiple access technology, MIMO technology, and Block Repeat-OFDM Aceess(BR- OFDMA). According to the analysed result, it points out the developing trend of OFDM technology.