摘要
在由中国提出的第三代无线标准TD-SCDMA系统中,联合检测被列为其中一个关键技术。针对联合检测技术的计算复杂度比较大,很难提高系统容量等问题,P.W.Baier等人提出了一种新的适用于TD-CDMA系统下行链路的技术——联合传输。文中给出了联合传输技术在FDD模式中应用的解决方案:通过终端反馈信息,在基站做信道预估计。
In the TD-SCDMA system of the 3G radio standard,Joint Detection is ranked one of key technologies. However the computational complexity of JD is high,and hard to increase the system capacity,especially for the downlink. To overcome the above described drawbacks,P.W.Baier and other researchers propose a novel multi-user transmission scheme for the downlink of TD-CDMA termed joint transmission (JT). This paper discusses the application of JT technology in the FDD system,and proposes a new solution: Through feedback signal,channel pre-estimation is accomplished at the base station.
出处
《通信技术》
2007年第10期12-13,16,共3页
Communications Technology
关键词
联合检测
联合传输
信道估计
joint detection (JD)
joint transmission (JT)
channel estimation
