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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 China’s third-generation wireless standard TD-SCDMA system proposed by the joint detection is listed as one of the key technologies. In view of the computational complexity of joint detection technology is relatively large, it is difficult to improve the system capacity and other issues, P.W.Baier et al proposed a new TD-CDMA system for the downlink technology - joint transmission. The article gives the solution of the joint transmission technology applied in the FDD mode: channel estimation is done at the base station through terminal feedback information.