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    • 1. 发明授权
    • Uplink interference cancellation
    • 上行干扰消除
    • US07443829B2
    • 2008-10-28
    • US11159345
    • 2005-06-23
    • Khurram Ali RizviYuk C ChowTomoya Horiguchi
    • Khurram Ali RizviYuk C ChowTomoya Horiguchi
    • H04B7/216H04J3/00H04Q7/24
    • H04J13/0003H04B1/7105H04J13/0044
    • The present invention provides a method of improving the performance of a CDMA based wireless network, such as a 3G cellular network for example. Interference cancellation is effectively performed earlier by using the channel request such as a reservation packet from a mobile terminal to estimate interference from that mobile on existing mobile users and interference on the mobile from existing mobile users, by determining the relative transmission timing of the new mobiles channel request compared with the transmission timings of the existing mobiles. The base station determine the cross-correlation between the codes already assigned to the existing users and the code to be allocated to the new user in order to determine an interference measure. This interference can then be cancelled from the new mobile when its data packets are received.
    • 本发明提供了一种改善例如3G蜂窝网络的基于CDMA的无线网络的性能的方法。 通过使用诸如来自移动终端的预留分组的信道请求,通过确定新移动台的相对传输定时来早期有效地执行干扰消除,以通过确定来自现有移动用户的来自该移动的现有移动用户的干扰和对现有移动用户对移动台的干扰 信道请求与现有手机的传输定时相比。 基站确定已分配给现有用户的代码与要分配给新用户的代码之间的互相关,以便确定干扰措施。 然后,当其接收到数据分组时,可以从新的移动台取消该干扰。
    • 2. 发明授权
    • Receiver processing systems
    • 接收机处理系统
    • US07295597B2
    • 2007-11-13
    • US10350037
    • 2003-01-24
    • Michael Philip FittonKhurram Ali RizviYuk Ching Chow
    • Michael Philip FittonKhurram Ali RizviYuk Ching Chow
    • H04B1/69H04B1/707
    • H04B1/7107H04B1/71075H04J13/0077
    • A multicode receiver for receiving data carried by a plurality of spread spectrum signals having a corresponding plurality of spreading codes, the spreading codes being substantially mutually orthogonal, the receiver having intercode interference suppression, the receiver including a multicode spread spectrum receiver to provide a set of data estimates having a plurality of estimates of data carried by the plurality of spread spectrum signals, one estimate for each spread spectrum signal, a plurality of respreaders to respread the plurality of data estimates, a plurality of interference suppressers, at least one for each of the plurality of spreading codes, each at least one interference suppresser for each code being configured to suppress respread data estimates for the spread spectrum signals of the other codes, from a received signal, a plurality of rake fingers each having the plurality of interference suppressers, and a plurality of rake combiners, one for each of the plurality of spreading codes.
    • 一种多码接收机,用于接收具有相应多个扩展码的多个扩展频谱信号承载的数据,该扩展码基本上相互正交,该接收机具有码间干扰抑制,该接收机包括一个多码扩频接收机,以提供一组 数据估计具有对多个扩展频谱信号携带的数据的多个估计,每个扩展频谱信号的一个估计,多个用于再次对多个数据估计进行再生的再生器,多个干扰抑制器,每个扩展频谱信号中的至少一个 多个扩展码,每个代码的至少一个干扰抑制器被配置为从接收信号,多个具有多个干扰抑制器的多个耙指抑制对其他代码的扩展频谱信号的再现数据估计, 以及多个耙组合器,其中一个用于多个耙组合器 f扩展码。