公开(公告)号：WO02078211A2

公开(公告)日：2002-10-03

申请号：PCT/US0208733

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

CPC classification number: H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0854 ,  H04B7/0891 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/006 ,  H04L5/0091 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/0228 ,  H04L25/0244 ,  H04L25/0248 ,  H04L25/03159 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: Techniques for transmitting data from a transmitter unit to a receiver unit in a multiple-input multiple-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.

Abstract translation: 用于在多输入多输出（MIMO）通信系统中将数据从发射机单元传输到接收机单元的技术。 在一种方法中，在接收机单元处，经由多个接收天线接收多个信号，其中接收到的来自发射机单元的信号。 处理所接收的信号以导出指示用于数据传输的多个传输信道的特性的信道状态信息（CSI）。 CSI被发回到发射机单元。 在发射机单元处，接收来自接收机单元的CSI，并根据所接收的CSI处理用于传输到接收机单元的数据。

公开(公告)号：WO0077938A9

公开(公告)日：2002-06-13

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

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的手指接收的信号，可以使与第一天线（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：WO0070902A9

公开(公告)日：2002-04-11

申请号：PCT/US0012778

申请日：2000-05-09

Applicant: QUALCOMM INC

Inventor： LING FUNYUN ,  HOLTZMAN JACK ,  WHEATLEY CHARLES E III ,  CHEN TAO ,  TIEDEMANN EDWARD G JR ,  LEUNG GILBERT

IPC: H04B7/005 ,  H04B7/26 ,  H04W36/08 ,  H04W52/22 ,  H04W52/40 ,  H04W52/42 ,  H04Q7/38

CPC classification number: H04W52/225 ,  H04W36/0094 ,  H04W52/40 ,  H04W52/42

Abstract: A method and apparatus for efficient candidate frequency search while initiating a handoff in a code division multiple access communication system. The method includes when the pilot signal is transmitted by the mobile station that is power controlled to a target receive level, the traffic channel power level is increased relative to the pilot channel to improve receiver performance. An improved feature is that the received pilot received at the base station stays the same while the receiver receives extra energy in the redundant traffic symbols received to enhance the probability of correctly decoding the received frame. The base station detects the absence of the mobile station transmitted signal from the frequency of interest. If the base station is aware of the starting time and duration of the absence, it can focus its detection during this predetermined time period. The performance can be improved if the absence of the signal is spread across two frames at the frame boundary.

Abstract translation: 一种用于在码分多址通信系统中发起切换的有效候选频率​​搜索的方法和装置。 该方法包括当导频信号由被功率控制到目标接收电平的移动台发送时，业务信道功率电平相对于导频信道增加，以提高接收机性能。 改进的特征是在基站处接收到的接收到的导频保持相同，而接收机在接收到的冗余业务符号中接收到额外的能量以增强正确解码接收帧的概率。 基站从感兴趣的频率检测到不存在移动台发送的信号。 如果基站知道不存在的起始时间和持续时间，则可以在该预定时间段内集中其检测。 如果没有信号在帧边界的两个帧上扩展，则可以提高性能。

公开(公告)号：WO0193431A8

公开(公告)日：2002-01-03

申请号：PCT/US0118252

申请日：2001-06-04

Applicant: QUALCOMM INC

Inventor： RAZOUMOV LEONID ,  LING FUNYUN

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

CPC classification number: H04L1/0059 ,  H04L1/0041 ,  H04L1/0069 ,  H04L1/0071 ,  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.

Abstract translation: 在通信系统中穿孔符号的技术。 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。针对每个计算的穿刺距离确定特定数量的符号穿孔。 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Dmin = [SIP]的最小穿孔距离Dmin，其中[]表示楼层操作者。 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，累加器被配置为在已经增加到S的值之后包围，每个增量为大小P.每当累加器递增P时，符号索引增加1，直到符号索引超过 值S.该方法有利地开始穿刺。 每次蓄能器包裹时，都会进行另一次穿刺。