摘要
LTE下行链路多址方案采用了正交频分复用多址(OFDMA)技术,上行链路多址方案采用了单载波频分多址(SC-FDMA)技术。这些多址方案能够确保用户之间的正交性,降低干扰,提高网络容量。分组调度中的频率范围是LTE高容量的一个影响因素。本文描述了LTE网络体系结构,分析了LTE成对频段与不成对频段,并介绍了WRC-07会议规定的新频谱。
The multiple access scheme in LTE downlink uses OFDMA and uplink uses SC-FDMA.These multiple access solutions provide orthogonality between the users,reducing the interference and improving the network capacity.The frequency dimension in the packet scheduling is one reason for the high LTE capacity.It describes the network architecture of LTE,analyzes the paired bands and unpaired bands of the LTE frequency bands in 3GPP specifications.In conclusion,it gives the new spectrum identified by WRC-07.
出处
《邮电设计技术》
2010年第4期55-57,共3页
Designing Techniques of Posts and Telecommunications
基金
国家自然科学基金资助项目(60703099)
