公开(公告)号：EP1330136A1

公开(公告)日：2003-07-23

申请号：EP01900378.9

申请日：2001-01-12

申请人： China Academy of Telecommunications Technology

发明人： LI, Feng ,  XU, Tiezhu ,  HE, Yusong ,  RAN, Xiaolong

IPC分类号： H04Q7/36

CPC分类号： H04W52/32 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/7083 ,  H04W52/50 ,  H04W56/00

摘要： The invention relates to a cell initial search method for user equipment (UE) in a CDMA digital cellular mobile communication system. The method includes: a UE after selecting a working frequency point, obtains downlink synchronization with the base station; and corrects carrier deviation between the UE and the base station. The downlink synchronization includes: deciding a range of downlink training sequence timeslot (DwPTS) based on training sequence power characteristic window value method; solving correlation of received data and training sequence in the range to obtain accurate receiving position of a UE. The correction of carrier deviation between a UE and the base station includes: estimating carrier deviation between a UE and the base station by software, recovering carrier frequency difference by using decision and feedback method to adjust hardware and carrier deviation correction method based on joint detection to correct carrier deviation.

公开(公告)号：EP1330136B1

公开(公告)日：2012-03-07

申请号：EP01900378.9

申请日：2001-01-12

申请人： China Academy of Telecommunications Technology

发明人： LI, Feng ,  XU, Tiezhu ,  HE, Yusong ,  RAN, Xiaolong

IPC分类号： H04B1/707

CPC分类号： H04W52/32 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/7083 ,  H04W52/50 ,  H04W56/00

摘要： The invention relates to a cell initial search method for user equipment (UE) in a CDMA digital cellular mobile communication system. The method includes: a UE after selecting a working frequency point, obtains downlink synchronization with the base station; and corrects carrier deviation between the UE and the base station. The downlink synchronization includes: deciding a range of downlink training sequence timeslot (DwPTS) based on training sequence power characteristic window value method; solving correlation of received data and training sequence in the range to obtain accurate receiving position of a UE. The correction of carrier deviation between a UE and the base station includes: estimating carrier deviation between a UE and the base station by software, recovering carrier frequency difference by using decision and feedback method to adjust hardware and carrier deviation correction method based on joint detection to correct carrier deviation.

公开(公告)号：EP1274179B1

公开(公告)日：2007-05-23

申请号：EP01913466.7

申请日：2001-02-20

申请人： China Academy of Telecommunications Technology, MII

发明人： LI, Feng ,  HE, Yusong ,  XU, Tiezhu

IPC分类号： H04B7/02 ,  H04J13/00

CPC分类号： H04B1/7105

摘要： The invention relates to a method for signal processing used in terminal device of code division multiple access mobile communication system, the method is a combining of time diversity and joint detection in order to increase diversity gain of receiver. The method includes steps: make a multitude sampling for received signal in time domain; estimate impulse response of air channel; obtain matrices; constitute a system matrix; perform joint detection algorithm, attain estimation of original transmitting data. When the method is used at mobile terminal, the problem of imbalance between uplink and downlink performance so that frequency reuse can be achieved, and relatively simple joint detection can be used. The method could also be applied in base station.

公开(公告)号：EP1274179A1

公开(公告)日：2003-01-08

申请号：EP01913466.7

申请日：2001-02-20

申请人： China Academy of Telecommunications Technology, MII

发明人： LI, Feng ,  HE, Yusong ,  XU, Tiezhu

IPC分类号： H04B7/02 ,  H04J13/00

CPC分类号： H04B1/7105

摘要： The invention discloses to a signal processing method for user equipment in a CDMA mobile communication system. The signal processing method is a combination of time diversity and joint detection in order to raise diversity gain of receiver. The method comprises: sample a received signal on time domain, estimate spatial channel impulse response value, obtain matrixes, constitute a system matrix, perform joint detection algorithm and obtain an estimated value of original sending data. When the method is used in a mobile user equipment, the uplink and downlink performance unmatched problem can be solved, using same frequency multiplexing can be reached and the joint detection algorithm is a simpler one. The method also can be used in a base station.

摘要翻译： 本发明公开了一种CDMA移动通信系统中的用户设备的信号处理方法。 信号处理方法是时间分集和联合检测的组合，以便提高接收机的分集增益。 该方法包括：对时域上的接收信号进行采样，估计空间信道脉冲响应值，获取矩阵，构成系统矩阵，执行联合检测算法，获得原始发送数据的估计值。 当在移动用户设备中使用该方法时，可以解决上行和下行性能不匹配的问题，可以使用相同的频率复用，并且联合检测算法更简单。 该方法也可用于基站。