公开(公告)号：HK1108772A1

公开(公告)日：2008-05-16

申请号：HK07111867

申请日：2007-11-01

Applicant: QUALCOMM INC

Inventor： BONACCORSO MARIO ,  LING FUNYUN ,  SIND-HUSHAYANA NAGABHUSHANA ,  BLACK PETER

IPC: H04B1/7117 ,  H04B1/10 ,  H04B1/707 ,  H04B1/709 ,  H04B7/08

Abstract: An optimum combiner that reduces the amount of interference imposed upon a first base station (102) by transmissions of other base stations within the same communication system. Two antennas (112, 114) are used to receive transmissions within a receiving station (110). A rake receiver is coupled to each antenna (112, 114). By optimally combining the signals that are received by each independent finger of the rake receiver, interference that is correlated between a finger associated with the first antenna (112) and a finger associated with the second antenna (114) can be minimized with respect to the desired signal. Optimum combining requires determination of optimum combining coefficients. A max-ratio combining algorithm may be substituted for the optimal combining algorithm depending upon interference characteristics.

公开(公告)号：AT360288T

公开(公告)日：2007-05-15

申请号：AT02753807

申请日：2002-03-22

Applicant: QUALCOMM INC

Inventor： LING FUNYUN ,  WALTON JAY R ,  HOWARD STEVEN J ,  WALLACE MARK ,  KETCHUM JOHN W

IPC: H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04L27/26 ,  H04B7/00

Abstract: Techniques for transmitting data from a transmitter unit to a receiver unit in a multiple-input mutiple-output (MIMO) communication system. In one method, at the receiver unit, a number of signals are received via a number of receive antennas, with the received signal from the transmitter unit. The received signals are processed to derive channel state information (CSI) indicative of characteristics of a number of transmission channels used for data transmission. The CSI is transmitted back to the transmitter unit. At the transmitter unit, the CSI from the receiver unit is received and data for transmission to the receiver units is processed based on the received CSI.

公开(公告)号：HK1046595A1

公开(公告)日：2003-01-17

申请号：HK02108056

申请日：2002-11-06

Applicant: QUALCOMM INC

Inventor： LING FUNYUN ,  BLACK PETER J

IPC: H04B7/005 ,  H04B7/26 ,  H04W52/12 ,  H04W52/20 ,  H04W52/22 ,  H04W52/28 ,  H04W52/42 ,  H04B

Abstract: According to one aspect of the invention, a method for determining a power control set point is provided. In one embodiment, the power control set point is determined based on one or more factors including a first factor corresponding to a pilot bit error rate, a second factor corresponding to a normalized signal variance, and a third factor corresponding to an average number of fingers in lock.

公开(公告)号：AU7598901A

公开(公告)日：2002-02-05

申请号：AU7598901

申请日：2001-07-17

Applicant: QUALCOMM INC

Inventor： RAZOUMOV LEONID ,  LING FUNYUN ,  LUNDBY STEIN

IPC: G06F11/10 ,  H03M13/00 ,  H03M13/23 ,  H03M13/25 ,  H04L1/00

Abstract: Techniques for puncturing symbols in a communications system are disclosed. S symbols are received for a frame having a capacity of N symbols, with S being greater than N. P symbols need to be punctured so that remaining symbols fit into the frame. A number of puncture distances, D1 through DN, are computed based on S and P. A particular number of symbol punctures is determined for each computed puncture distance. P1 through PN symbol punctures are then performed at the distances of D1 through DN, respectively. For a more even distribution of the symbol punctures, each of the distances D1 through DN can be selected to be greater than or equal to a minimum puncture distance Dmin defined as Dmin=└S/P┘, where └┘ denotes a floor operator. The symbol punctures at each computed distance can be performed together or distributed with symbol punctures at other distances. In the alternative, an accumulator is configured to wrap around after it has been incremented to a value of S, each increment being of size P. A symbol index is incremented by one each time the accumulator is incremented by P, until the symbol index exceeds the value S. The process is advantageously begun with a puncture. Each time the accumulator wraps around, another puncture is performed. As another alternative, puncturing can be combined with symbol repetition.

公开(公告)号：AU1195202A

公开(公告)日：2001-12-11

申请号：AU1195202

申请日：2001-06-04

Applicant: QUALCOMM INC

Inventor： RAZOUMOV LEONID ,  LING FUNYUN

IPC: H03M13/23 ,  H03M13/00 ,  H04L1/00 ,  H04L1/08

Abstract: Techniques for puncturing symbols in a communications system. S symbols are received for a frame having a capacity of N symbols, with S being greater than N. P symbols need to be punctured so that remaining symbols fit into the frame. A number of puncture distances, D1 through DN, are computed based on S and P. A particular number of symbol punctures is determined for each computed puncture distance. P1 through PN symbol punctures are then performed at the distances of D1 through DN, respectively. For a more even distribution of the symbol punctures, each of the distances D1 through DN can be selected to be greater than or equal to a minimum puncture distance Dmin defined as Dmin = [SIP], where [] denotes a floor operator. The symbol punctures at each computed distance can be performed together or distributed with symbol punctures at other distances. In the alternative, an accumulator is configured to wrap around after it has been incremented to a value of S, each increment being of size P. A symbol index is incremented by one each time the accumulator is incremented by P, until the symbol index exceeds the value S. The process is advantageously begun with a puncture. Each time the accumulator wraps around, another puncture is performed.

公开(公告)号：AU4366600A

公开(公告)日：2000-11-10

申请号：AU4366600

申请日：2000-04-21

Applicant: QUALCOMM INC

Inventor： LING FUNYUN ,  BLACK PETER J ,  EASTON KENNETH D

IPC: H04B1/7075 ,  H04B1/707 ,  H04B1/709 ,  H04L27/00 ,  H04L27/233 ,  H04L25/02

Abstract: Coherent detection of high-speed digital wireless communications becomes more difficult when the frequencies of the transmitter and receiver oscillators do not coincide. A frequency-locked loop may be used to characterize this frequency offset by processing the samples received on a pilot channel. Rather than using the offset information thus derived to correct the frequency of the received signal, the invention realizes a considerable computational savings by applying a frequency correction to the despread pilot samples instead.

公开(公告)号：WO0077938A2

公开(公告)日：2000-12-21

申请号：PCT/US0016266

申请日：2000-06-13

Applicant: QUALCOMM INC

Inventor： BONACCORSO MARIO ,  LING FUNYUN ,  SINDHUSHAYANA NAGABHUSHANA ,  BLACK PETER

IPC: H04B1/10 ,  H04B1/707 ,  H04B7/08 ,  H04B1/00

CPC classification number: H04B1/7115 ,  H04B1/712 ,  H04B7/0854

Abstract: An optimum combiner that reduces the amount of interference imposed upon a first base station (102) by transmissions of other base stations within the same communication system. Two antennas (112, 114) are used to receive transmissions within a receiving station (110). A rake receiver is coupled to each antenna (112, 114). By optimally combining the signals that are received by each independent finger of the rake receiver, interference that is correlated between a finger associated with the first antenna (112) and a finger associated with the second antenna (114) can be minimized with respect to the desired signal. Optimum combining requires determination of optimum combining coefficients. A max-ratio combining algorithm may be substituted for the optimal combining algorithm depending upon interference characteristics.

Abstract translation: 一种最佳组合器，其通过同一通信系统内的其他基站的传输来减少对第一基站（102）施加的干扰量。 两个天线（112,114）用于接收接收站（110）内的传输。 耙式接收器耦合到每个天线（112,114）。 通过最佳地组合由瑞克接收机的每个独立手指接收的信号，可以将与第一天线（112）相关联的手指与与第二天线（114）相关联的手指之间相关联的干扰相对于 所需信号。 最佳组合需要确定最佳组合系数。 最大比组合算法可以取决于干扰特性的最佳组合算法。

公开(公告)号：WO0209294A3

公开(公告)日：2003-01-16

申请号：PCT/US0122757

申请日：2001-07-17

Applicant: QUALCOMM INC

Inventor： RAZOUMOV LEONID ,  LING FUNYUN ,  LUNDBY STEIN

IPC: G06F11/10 ,  H03M13/00 ,  H03M13/23 ,  H03M13/25 ,  H04L1/00

CPC classification number: H04L1/0069

Abstract: Techniques for puncturing symbols in a communications system are disclosed. S symbols are received for a frame having a capacity of N symbols, with S being greater than N. P symbols need to be punctured so that remaining symbols fit into the frame. A number of puncture distances, D1 through DN, are computed based on S and P. A particular number of symbol punctures is determined or each computed puncture distance. P1 through PN symbol punctures are then performed at the distances of D1 through DN, respectively. For a more even distribution of the symbol punctures, each of the distances D1 through DN can be selected to be greater than or equal to a minimum puncture distance Dmin defined as D min=[ S/P ], where [ ] denotes a floor operator. The symbol punctures at each computed distance can be performed together or distributed with symbol punctures at other distances. In the alternative, an accumulator is configured to wrap around after it has been incremented to a value of S , each increment being of size P . A symbol index is incremented by one each time the accumulator is incremented by P , until the symbol index exceeds the value S . The progress is advantageously begun with a puncture. Each time the accumulator wraps around, another puncture is performed. As another alternative, puncturing can be combined with symbol repetition.

Abstract translation: 公开了一种在通信系统中对符号进行穿孔的技术。 对于具有N个符号的容量的帧接收S个符号，其中S大于N.P个符号需要被穿孔，使得剩余符号适合于帧。 基于S和P计算多个穿刺距离D1至DN。确定特定数量的符号穿孔或每个计算的穿刺距离。 然后分别在D1到DN的距离处执行P1到PN符号穿孔。 为了更均匀地分配符号穿孔，可以将距离D1至DN中的每一个选择为大于或等于定义为最小穿孔距离Dmin，定义为D min = [S / P]，其中[]表示楼层操作员。 在每个计算距离处的符号穿孔可以一起执行或者以其他距离的符号穿孔分布。 在替代方案中，累加器被配置为在其增加到值之后包围，每个增量大小为P i。 每当累加器递增i时，符号索引增加1，直到符号索引超过值S i。 进展有利地开始穿刺。 每次蓄能器包裹时，都会进行另一次穿刺。 作为另一种选择，穿孔可以与符号重复组合。

公开(公告)号：AT479233T

公开(公告)日：2010-09-15

申请号：AT01953552

申请日：2001-07-17

Applicant: QUALCOMM INC

Inventor： RAZOUMOV LEONID ,  LING FUNYUN ,  LUNDBY STEIN

IPC: G06F11/10 ,  H03M13/00 ,  H03M13/23 ,  H03M13/25 ,  H04L1/00

Abstract: Techniques for puncturing symbols in a communications system are disclosed. S symbols are received for a frame having a capacity of N symbols, with S being greater than N. P symbols need to be punctured so that remaining symbols fit into the frame. A number of puncture distances, D1 through DN, are computed based on S and P. A particular number of symbol punctures is determined for each computed puncture distance. P1 through PN symbol punctures are then performed at the distances of D1 through DN, respectively. For a more even distribution of the symbol punctures, each of the distances D1 through DN can be selected to be greater than or equal to a minimum puncture distance Dmin defined as Dmin=└S/P┘, where └┘ denotes a floor operator. The symbol punctures at each computed distance can be performed together or distributed with symbol punctures at other distances. In the alternative, an accumulator is configured to wrap around after it has been incremented to a value of S, each increment being of size P. A symbol index is incremented by one each time the accumulator is incremented by P, until the symbol index exceeds the value S. The process is advantageously begun with a puncture. Each time the accumulator wraps around, another puncture is performed. As another alternative, puncturing can be combined with symbol repetition.

公开(公告)号：AT424660T

公开(公告)日：2009-03-15

申请号：AT00978600

申请日：2000-11-13

Applicant: QUALCOMM INC

Inventor： CHEN TAO ,  LING FUNYUN ,  TIEDEMANN EDWARD

IPC: H04B7/005 ,  H04B7/26 ,  H04B17/00 ,  H04W28/00 ,  H04W28/04

Abstract: In wireless communications, it is necessary to monitor the transmission quality of communications channels to maintain system performance and operation. The invention provides a way of measuring bit error rates in channels at the receiver, without diminishing channel throughput by inserting quality monitoring data into the signal at the transmitter.