LTE-Advanced系统中下行物理层方面的载波聚合技术的研究

Research of carrier aggregation of LTE- the advanced system in downlink physical layer

为了支持LTE-A达到100MHz的系统带宽的要求,3GPP提出了载波聚合技术。所谓载波聚合,就是LTE-A为了支持下行传输带宽超过20MHz聚合两个或者更多的成分载波(component carrier)。接收能力超过20MHz的LTE-A终端(User Equipment,UE)可以同时接收多个成员载波,而对LTE Rel.8的终端,也可以正常接收其中一个成员载波。文章重点研究了LTE-Advanced系统中下行物理层方面的载波聚合技术。

In order to support LTE - A 100 MHZ bandwidth demands of system, the 3 GPP carrier aggregation technologies are put forward. So-called LTE - A carrier aggregation is to support the downlink transmission bandwidth more than 20 MHZ polymerization two or more components of the carrier （component carrier）. Capacity of more than 20 MHZ LTE - A terminal （the User Equipment, UE） can receive multiple members carrier, at the same time for LTE Kel. 8 terminals, can also receive one of the members of the carrier. This paper mainly studied the LTE - Advanced down the physical aspects of carrier aggregation technology in the system.