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1. 发明授权

US06240099B1 Multi-user code division multiple access receiver 失效
标题翻译：多用户码分多址接收机
公开(公告)号：US06240099B1
公开(公告)日：2001-05-29
申请号：US09039739
申请日：1998-03-16
申请人： Teng Joon Lim , Lars Rasmussen , Hiroki Sugimoto
发明人： Teng Joon Lim , Lars Rasmussen , Hiroki Sugimoto
IPC分类号： H04B7216
CPC分类号： H04B1/7115 , H04B1/7095 , H04B1/7103
摘要： A receiver and method for receiving a code-division multiple-access (CDMA) signal combining symbol values spread by a plurality of spreading codes, which method comprises the steps of: (a) converting the CDMA signal to a baseband signal; (b) recognizing symbol boundaries in every multipath for every user in the baseband signal to produce a delay estimate; (c) estimating an attenuation and phase rotation impressed on the signal by each multipath to produce channel estimates; (d) generating new symbol estimates for every user at a sampling rate that is greater than a symbol rate of the signal; (e) generating an estimate of the received signal using said symbol estimates and channel estimates; (f) comparing the received signal with its estimate and feeding estimation error back to a means for estimating the transmitted symbols; (g) sampling the symbol estimates at the estimated symbol boundaries of each user to obtain final symbol estimates; and (h) repeating steps (b) through (g) with every new sample.
摘要翻译：一种用于接收组合由多个扩展码扩展的符号值的码分多址（CDMA）信号的接收机和方法，该方法包括以下步骤：（a）将CDMA信号转换为基带信号;（b）识别基带信号中的每个用户的每个多路径中的符号边界以产生延迟估计;（c）估计每个多径对信号施加的衰减和相位旋转以产生信道估计;（d）为每个用户生成新的符号估计（e）使用所述符号估计和信道估计来产生接收信号的估计;（f）将接收到的信号与其估计和馈送估计误差进行比较，以返回到用于估计所发送符号的装置;（g）在每个用户的估计符号边界处对符号估计进行采样以获得最终符号估计; 和（h）每个新样品重复步骤（b）至（g）。

2. 发明授权

US06661835B1 Receiving device and channel estimator for use in a CDMA communication system 有权
标题翻译：用于CDMA通信系统的接收设备和信道估计器
公开(公告)号：US06661835B1
公开(公告)日：2003-12-09
申请号：US09385359
申请日：1999-08-30
申请人： Hiroki Sugimoto , Teng Joon Lim , Lars Rasmussen , Kok Leong Cheah , Sumei Sun , Yoshihiro Matsumoto , Takashi Oyama
发明人： Hiroki Sugimoto , Teng Joon Lim , Lars Rasmussen , Kok Leong Cheah , Sumei Sun , Yoshihiro Matsumoto , Takashi Oyama
IPC分类号： H04B1500
CPC分类号： H04B1/71075 , H04B1/7117 , H04B1/712 , H04B1/7183
摘要： At a base station 2, a CDMA received signal coming in through an antenna 4 is fed to a radio frequency unit (RFU) or high frequency unit 6. The RFU 6 demodulates a baseband signal BB from a signal RF and delivers the signal BB to an analog-to-digital converter (A/D) 8. The resulting digital signal output from the A/D 8 is input to a hybrid interference canceller (HIC) 12 as a received signal Rx Data 10. The HIC 12 divides users into two groups and assigns one combination of a parallel interference canceller and a serial interference canceller to each group. The HIC 12 cancels interference contained in the received signal Rx Data 10 for thereby estimating symbols particular to a plurality of users.
摘要翻译：在基站2，通过天线4进入的CDMA接收信号被馈送到射频单元（RFU）或高频单元6.RFU6从信号RF解调基带信号BB，并将信号BB传送到模数转换器（A / D）8.从A / D 8输出的所得数字信号作为接收信号Rx Data 10被输入到混合干扰消除器（HIC）12 .HIC 12将用户分为两组，并将每个组的并行干扰消除器和串行干扰消除器的一个组合分配。 HIC 12消除包含在接收信号Rx Data 10中的干扰，从而估计特定于多个用户的符号。

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