公开(公告)号：EP1209761B1

公开(公告)日：2008-08-06

申请号：EP00938466.0

申请日：2000-06-22

申请人： China Academy of Telecommunications Technology, MII

发明人： LI, Feng

IPC分类号： H01Q25/00 ,  H04B7/08 ,  H04B1/707

CPC分类号： H01Q25/00 ,  H01Q3/2611

摘要： The invention relates to baseband processing method based on a smart antenna and interference cancellation, comprising A. performing channel estimation, obtaining a response of the channel; B. patterning beams using smart antenna based on the channel estimation, extracting useful signals of symbol level; C. reconstructing the data using the obtained useful signals, adding scrambled code, and obtaining the reconstructed signals in chip level; D. subtracting the reconstructed signals from received data; and E. repea ting B to D, restoring all user's signals. The method of the invention can resolve various multipath propagation interference in CDMA system using a smart antenna, and obtain good effects.

公开(公告)号：EP1267447A1

公开(公告)日：2002-12-18

申请号：EP01900376.3

申请日：2001-01-12

申请人： China Academy of Telecommunications Technology, MII

发明人： LI, Shihe ,  LI, Jun ,  LI, Feng

IPC分类号： H01Q21/00

CPC分类号： H01Q1/246 ,  H01Q1/007

摘要： The invention discloses a distributed smart antenna system comprising an antenna array consisted of N antenna elements, N radio frequency transceivers and feeder cables used to connect the both. First, N antenna elements and N radio frequency transceivers are grouped according to cell coverage range and traffic volume. Then antenna element groups are distributed on different places of coverage range of same wireless communication system base station, including different buildings or different floors of same building; but use same baseband digital signal processor. Each antenna element group can have one to M antenna elements. In this way, advantage of smart antenna can be thoroughly developed, and during improving cell coverage, system capacity is increased and system cost is decreased.

摘要翻译： 本发明公开了一种分布式智能天线系统，包括由N个天线元件组成的天线阵列，N个射频收发器和用于连接这两个天线的馈电电缆。 首先，根据小区覆盖范围和业务量对N个天线单元和N个射频收发机进行分组。 然后天线元件组分布在相同无线通信系统基站的不同覆盖范围内，包括不同建筑物或同一建筑物的不同楼层; 但使用相同的基带数字信号处理器。 每个天线元件组可以具有一个到M个天线元件。 这样就可以彻底地发展智能天线的优势，在提高小区覆盖的同时，提高系统容量，降低系统成本。

公开(公告)号：EP2443908A1

公开(公告)日：2012-04-25

申请号：EP10788583.2

申请日：2010-03-12

申请人： China Academy of Telecommunications Technology, MII ,  Telefonaktiebolaget L M Ericsson (PUBL)

发明人： LIU, Weihua ,  CHEN, Kai ,  MA, Weiguo ,  NORBERG, Sören

IPC分类号： H04W92/12

CPC分类号： H04W88/085 ,  H04L69/08 ,  H04L69/22 ,  H04L69/323

摘要： The invention discloses a method for transmitting data between a radio equipment (RE) and a radio equipment control (REC) of a radio base station via Ethernet. The method comprises in adaptive physical layer, adapting data frames complying with a remote radio protocol to Ethernet data frames that are suitable for transmission over Ethernet physical layer, and transmitting the adapted Ethernet data frames over the Ethernet physical layer.

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。

公开(公告)号：EP1298825B1

公开(公告)日：2015-10-14

申请号：EP01907321.2

申请日：2001-02-20

申请人： China Academy of Telecommunications Technology, MII

发明人： LI, Shihe ,  LI, Jun ,  LI, Feng

IPC分类号： H04B7/06 ,  H04B7/08

CPC分类号： H04B7/086 ,  H04B7/0617

公开(公告)号：EP1298825A1

公开(公告)日：2003-04-02

申请号：EP01907321.2

申请日：2001-02-20

申请人： China Academy of Telecommunications Technology, MII

发明人： LI, Shihe ,  LI, Jun ,  LI, Feng

IPC分类号： H04J13/00

CPC分类号： H04B7/086 ,  H04B7/0617

摘要： The invention relates to a method and an apparatus using smart antenna in frequency division duplex code division multiple access mobile communication system, for solving limitation of smart antenna use due to asymmetric propagation of uplink electric wave and downlink electric wave. In the wireless base station, there are transmitting smart antenna array and receiving smart antenna array and associated transmitters and receivers, respectively, and a common baseband signal processor. In the method, the main path direction is determined by signal direction of arrival, obtained from receiving signal; in the downlink beam forming, an expected transmitting beam form is based on the main path direction. The system can obtain advantages of smart antenna, improve cell coverage, increase system capacity and reduce cost.

摘要翻译： 本发明涉及一种在频分双工码分多址移动通信系统中使用智能天线的方法和装置，用于解决由于上行电波和下行电波的不对称传播引起的智能天线使用的限制。 在无线基站中，分别有传输智能天线阵列和接收智能天线阵列及相关的发射机和接收机以及公共基带信号处理器。 在该方法中，主路径方向由从接收信号获得的信号到达方向确定; 在下行链路波束形成中，期望的发射波束形式基于主路径方向。 该系统可以获得智能天线的优势，提高小区覆盖率，提高系统容量，降低成本。

公开(公告)号：EP1209761A1

公开(公告)日：2002-05-29

申请号：EP00938466.0

申请日：2000-06-22

申请人： China Academy of Telecommunications Technology, MII

发明人： LI, Feng

IPC分类号： H01Q25/00

CPC分类号： H01Q25/00 ,  H01Q3/2611

摘要： This invention discloses a baseband processing method based on smart antenna and interference cancellation, which includes: A. making channel estimation to get channel response; B. picking up useful symbolic level signal from received digital signal by smart antenna beam forming based on the channel estimation; C. making signal reconstruction by using the got useful signal and adding scrambling code to get the chip level reconstructed signal; D. subtracting the reconstructed signal from received digital signal; E. executing steps B to D repeatedly to recover signal for all user. The method of the invention can solve various interference of multi-path propagation in CDMA system with smart antenna and get better results.

摘要翻译： 本发明公开了一种基于智能天线和干扰消除的基带处理方法，包括：A.使信道估计获得信道响应; B.通过基于信道估计的智能天线波束形成从接收的数字信号中拾取有用的符号级信号; C.通过使用有用信号进行信号重构，并加入扰码以获得芯片级重构信号; D.从接收到的数字信号中减去重构信号; E.重复执行步骤B至D以恢复所有用户的信号。 本发明的方法可以解决具有智能天线的CDMA系统中多路径传播的各种干扰，取得更好的效果。

公开(公告)号：EP1204161B1

公开(公告)日：2008-08-20

申请号：EP00940116.7

申请日：2000-06-26

申请人： China Academy of Telecommunications Technology, MII

发明人： LI, Shihe

IPC分类号： H01Q3/26 ,  H01Q1/24

CPC分类号： H01Q1/246 ,  H01Q3/267

摘要： This invention relates to a method and apparatus for calibrating smart antenna array, used for calibrating smart antenna array in real time. It is provided calibrating link constructed by connecting a coupling structure, feeding cables and a beacon transceiver. The coupling structure is calibrated previously by vector network analyzer, and recorded its transmitting and receiving transmission factors respectively. Receiving calibration is performed on the smart antenna array, the amplitude of transmission factor of each receiving link is adjusted to be equal to that of the reference link, and the phase difference phi is recorded in baseband processor. Transmitting calibration is performed, the amplitude of transmission factor of each transmitting link is adjusted to be equal to that of the reference link, and the phase difference psi is recorded in baseband processor. The coupling structure of the invention includes space coupling manner employing beacon antenna and manner employing passive network.

公开(公告)号：EP1291973A1

公开(公告)日：2003-03-12

申请号：EP01900377.1

申请日：2001-01-12

申请人： China Academy of Telecommunications Technology, MII

发明人： LI, Feng ,  RAN, Xiaolong

IPC分类号： H01Q21/00

CPC分类号： H01Q21/00

摘要： The invention relates to a method for improving smart antenna array coverage. Arbitrary beam forming of an antenna array can be implemented by adjusting n antenna units beam forming parameter W(n) , based on difference of size and shape between coverage required in engineering design and actually realized coverage. The method includes: setting an accuracy of W(n) , i.e. an adjusting step length, setting a set of initial values W 0 (n) , an initial value of mean-square error ε 0 , setting counting variable, setting threshold of ending adjustment M and maximum emission power of an antenna unit T(n). With the settings, a loop for W(n) adjustment is executed. A step-by-step approximation method is deployed for adjusting antenna radiation parameters, based on the minimum mean-square error criterion. Finially, an actual coverage of an antenna array approximates to the required coverage, under local optimization condition.

摘要翻译： 本发明涉及一种改进智能天线阵列覆盖的方法。 可以通过根据工程设计所需覆盖面与实际覆盖范围之间的尺寸和形状的差异来调整n个天线单元波束形成参数W（n）来实现天线阵列的任意波束形成。 该方法包括：设定W（n）的精度，即调整步长，设定一组初始值W0（n），均方误差ε0的初始值，设定计数变量，结束调整设定阈值 M和天线单元T（n）的最大发射功率。 通过设置，执行W（n）调整的循环。 基于最小均方误差准则，部署了一种逐步近似法来调整天线辐射参数。 实际上，在局部优化条件下，天线阵列的实际覆盖范围近似于所需的覆盖范围。