公开(公告)号：US20100093387A1

公开(公告)日：2010-04-15

申请号：US12636497

申请日：2009-12-11

申请人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

发明人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

IPC分类号： H04B7/00 ,  H04B17/00

CPC分类号： H04W52/12 ,  H04L1/0051 ,  H04L1/0066 ,  H04L1/208 ,  H04W52/20 ,  H04W52/36

摘要： Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint, setpoint surplus/deficit indicative of the difference between the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics may include re-encoded symbol error rate, re-encoded power metric, modified Yamamoto metric, minimum or average LLR among decoded bits, number of decoding iterations, and possibly others. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

摘要翻译： 调整无线通信系统中功率控制回路设定值的技术。 可以基于指示擦除/良好解码帧的帧状态来调整设定点，指示解码结果的置信度的一个或多个（通常为软）度量，指示接收信号质量与设定点之间的差异的功率余量/ ，表示设定值与所需性能水平所需的阈值Eb / Nt之间的差异的设定值剩余/缺失，或其组合。 度量可以包括重新编码的符号错误率，重新编码的功率度量，修改的Yamamoto度量，解码比特中的最小或平均LLR，解码迭代次数，以及可能的其他值。 可以根据上述因素以不同的方式和/或不同的量调节设定点。 这些技术可以用于CDMA系统中的前向和/或反向链路。

公开(公告)号：US06763244B2

公开(公告)日：2004-07-13

申请号：US09810685

申请日：2001-03-15

申请人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

发明人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

IPC分类号： H04B116

CPC分类号： H04W52/12 ,  H04L1/0051 ,  H04L1/0066 ,  H04L1/208 ,  H04W52/20 ,  H04W52/36

摘要： Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint, setpoint surplus/deficit indicative of the difference between the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics may include re-encoded symbol error rate, re-encoded power metric, modified Yamamoto metric, minimum or average LLR among decoded bits, number of decoding iterations, and possibly others. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

摘要翻译： 调整无线通信系统中功率控制回路设定值的技术。 可以基于指示擦除/良好解码帧的帧状态来调整设定点，指示解码结果的置信度的一个或多个（通常为软）度量，指示接收信号质量与设定点之间的差异的功率余量/ ，表示设定值与所需性能水平所需的阈值Eb / Nt之间的差异的设定值剩余/缺失，或其组合。 度量可以包括重新编码的符号错误率，重新编码的功率度量，修改的Yamamoto度量，解码比特中的最小或平均LLR，解码迭代次数，以及可能的其他值。 可以根据上述因素以不同的方式和/或不同的量调节设定点。 这些技术可以用于CDMA系统中的前向和/或反向链路。

公开(公告)号：US07643842B2

公开(公告)日：2010-01-05

申请号：US10889808

申请日：2004-07-12

申请人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

发明人： Tao Chen ,  Jack M. Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles E. Wheatley, III

IPC分类号： H04B1/16 ,  H04W52/18

CPC分类号： H04W52/12 ,  H04L1/0051 ,  H04L1/0066 ,  H04L1/208 ,  H04W52/20 ,  H04W52/36

摘要： Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint, setpoint surplus/deficit indicative of the difference between the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics may include re-encoded symbol error rate, re-encoded power metric, modified Yamamoto metric, minimum or average LLR among decoded bits, number of decoding iterations, and possibly others. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

摘要翻译： 调整无线通信系统中功率控制回路设定值的技术。 可以基于指示擦除/良好解码帧的帧状态来调整设定点，指示解码结果的置信度的一个或多个（通常是软的）度量，指示接收到的信号质量和设定点之间的差异的功率余量/ ，表示设定值与所需性能水平所需的阈值Eb / Nt之间的差异的设定值剩余/缺失，或其组合。 度量可以包括重新编码的符号错误率，重新编码的功率度量，修改的Yamamoto度量，解码比特中的最小或平均LLR，解码迭代次数，以及可能的其他值。 可以根据上述因素以不同的方式和/或不同的量调节设定点。 这些技术可以用于CDMA系统中的前向和/或反向链路。

公开(公告)号：US06950406B2

公开(公告)日：2005-09-27

申请号：US10055293

申请日：2002-01-22

申请人： Tao Chen ,  Jack M. Holtzman ,  Keith Saints ,  Charles E. Wheatley III ,  Fuyun Ling ,  Nagabhushana Sindhushayana

发明人： Tao Chen ,  Jack M. Holtzman ,  Keith Saints ,  Charles E. Wheatley III ,  Fuyun Ling ,  Nagabhushana Sindhushayana

IPC分类号： H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  G01R31/08

CPC分类号： H04W52/12 ,  H04W52/08 ,  H04W52/20 ,  H04W52/44

摘要： A power control system for controlling the transmission power in a system wherein the transmission power may be gated or capped. The receiver employs a combination of closed loop and outer loop power control. The outer loop is frozen upon detection by the receiver that the signal has been capped or gated.

摘要翻译： 一种用于控制系统中的发射功率的功率控制系统，其中发射功率可以选通或加盖。 接收机采用闭环和外环功率控制的组合。 接收机检测到外部环路信号已被封顶或门控时被冻结。

公开(公告)号：US06373823B1

公开(公告)日：2002-04-16

申请号：US09239454

申请日：1999-01-28

申请人： Tao Chen ,  Jack M. Holtzman ,  Keith Saints ,  Charles E. Wheatley, III ,  Fuyun Ling ,  Nagabhushana Sindhushayana

发明人： Tao Chen ,  Jack M. Holtzman ,  Keith Saints ,  Charles E. Wheatley, III ,  Fuyun Ling ,  Nagabhushana Sindhushayana

IPC分类号： H04J314

CPC分类号： H04W52/12 ,  H04W52/08 ,  H04W52/20 ,  H04W52/44

摘要： A power control system for controlling the transmission power in a system wherein the transmission power may be gated or capped. The receiver employs a combination of closed loop and outer loop power control. The outer loop is frozen upon detection by the receiver that the signal has been capped or gated.

摘要翻译： 一种用于控制系统中的发射功率的功率控制系统，其中发射功率可以选通或加盖。 接收机采用闭环和外环功率控制的组合。 接收机检测到外部环路信号已被封顶或门控时被冻结。

公开(公告)号：US20050003848A1

公开(公告)日：2005-01-06

申请号：US10889808

申请日：2004-07-12

申请人： Tao Chen ,  Jack Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles Wheatley

发明人： Tao Chen ,  Jack Holtzman ,  Fuyun Ling ,  Keith Saints ,  Nagabhushana Sindhushayana ,  Charles Wheatley

IPC分类号： H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04L1/00 ,  H04L1/20 ,  G05B9/02 ,  H04B7/00

CPC分类号： H04W52/12 ,  H04L1/0051 ,  H04L1/0066 ,  H04L1/208 ,  H04W52/20 ,  H04W52/36

摘要： Techniques to adjust the setpoint of a power control loop in a wireless communication system. The setpoint may be adjusted based on frame status indicative of erased/good decoded frames, one or more (typically soft) metrics indicative of the confidence in the decoded results, power surplus/deficit indicative of the difference between the received signal quality and the setpoint, setpoint surplus/deficit indicative of the difference between the setpoint and a threshold Eb/Nt needed for the desired level of performance, or a combination thereof. The metrics may include re-encoded symbol error rate, re-encoded power metric, modified Yamamoto metric, minimum or average LLR among decoded bits, number of decoding iterations, and possibly others. The setpoint may be adjusted in different manners and/or by different amounts depending on the above-noted factors. The techniques may be employed for forward and/or reverse links in CDMA systems.

摘要翻译： 调整无线通信系统中功率控制回路设定值的技术。 可以基于指示擦除/良好解码帧的帧状态来调整设定点，指示解码结果的置信度的一个或多个（通常是软的）度量，指示接收到的信号质量和设定点之间的差异的功率余量/ ，表示设定值与所需性能水平所需的阈值Eb / Nt之间的差异的设定值剩余/缺失，或其组合。 度量可以包括重新编码的符号错误率，重新编码的功率度量，修改的Yamamoto度量，解码比特中的最小或平均LLR，解码迭代次数，以及可能的其他值。 可以根据上述因素以不同的方式和/或不同的量调节设定点。 这些技术可以用于CDMA系统中的前向和/或反向链路。

公开(公告)号：US06597922B1

公开(公告)日：2003-07-22

申请号：US09312262

申请日：1999-05-14

申请人： Fuyun Ling ,  Jack Holtzman ,  Charles E. Wheatley, III ,  Tao Chen ,  Edward G. Tiedemann ,  Gilbert Leung

发明人： Fuyun Ling ,  Jack Holtzman ,  Charles E. Wheatley, III ,  Tao Chen ,  Edward G. Tiedemann ,  Gilbert Leung

IPC分类号： H04B700

CPC分类号： H04W52/225 ,  H04W36/0094 ,  H04W52/40 ,  H04W52/42

摘要： 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.

摘要翻译： 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：US06725028B2

公开(公告)日：2004-04-20

申请号：US09870958

申请日：2001-05-30

申请人： Mario Bonaccorso ,  Fuyun Ling ,  Nagabhushana Sindhushayana ,  Peter Black

发明人： Mario Bonaccorso ,  Fuyun Ling ,  Nagabhushana Sindhushayana ,  Peter Black

IPC分类号： H04B110

CPC分类号： H04B1/7115 ,  H04B1/712 ,  H04B7/0854

摘要： An optimum combiner that reduces the amount of interference imposed upon a first base station by transmissions of other base stations within the same communication system. Two antennas are used to receive transmissions within a receiving station. A rake receiver is coupled to each antenna. 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 and a finger associated with the second antenna can be minimized with respect to the desired signal. Optimum combining requires determination of optimum combining coefficients.

摘要翻译： 一种最佳组合器，其通过在同一通信系统内的其它基站的传输来减少对第一基站施加的干扰量。 两个天线用于在接收站内接收传输。 耙式接收器耦合到每个天线。 通过最佳地组合由瑞克接收机的每个独立手指接收到的信号，可以相对于期望的信号来最小化与第一天线相关联的手指与与第二天线相关联的手指之间相关的干扰。 最佳组合需要确定最佳组合系数。

公开(公告)号：US06285861B1

公开(公告)日：2001-09-04

申请号：US09332857

申请日：1999-06-14

申请人： Mario Bonaccorso ,  Fuyun Ling ,  Nagabhushana Sindhushayana ,  Peter Black

发明人： Mario Bonaccorso ,  Fuyun Ling ,  Nagabhushana Sindhushayana ,  Peter Black

IPC分类号： H04B1702

CPC分类号： H04B1/7115 ,  H04B1/712 ,  H04B7/0854

摘要： An optimum combiner that reduces the amount of interference imposed upon a first base station by transmissions of other base stations within the same communication system. Two antennas are used to receive transmissions within a receiving station. A rake receiver is coupled to each antenna. 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 and a finger associated with the second antenna can be minimized with respect to the desired signal. Optimum combining requires determination of optimum combining coefficients.

公开(公告)号：US20050276344A1

公开(公告)日：2005-12-15

申请号：US11208263

申请日：2005-08-18

申请人： Fuyun Ling ,  Nagabhushana Sindhushayana ,  Jay Walton ,  Mark Wallace ,  Ivan Fernandez

发明人： Fuyun Ling ,  Nagabhushana Sindhushayana ,  Jay Walton ,  Mark Wallace ,  Ivan Fernandez

IPC分类号： H04J11/00 ,  H04B7/04 ,  H04J99/00 ,  H04L1/00 ,  H04L27/26 ,  H04L1/02 ,  H04B7/10 ,  H04K1/10

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04L1/0009 ,  H04L1/0041 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0066 ,  H04L1/0068 ,  H04L1/0071 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/0048 ,  H04L5/006 ,  H04L25/03171 ,  H04L27/3488

摘要： Coding techniques for a (e.g., OFDM) communication system capable of transmitting data on a number of “transmission channels” at different information bit rates based on the channels' achieved SNR. A base code is used in combination with common or variable puncturing to achieve different coding rates required by the transmission channels. The data (i.e., information bits) for a data transmission is encoded with the base code, and the coded bits for each channel (or group of channels with the similar transmission capabilities) are punctured to achieve the required coding rate. The coded bits may be interleaved (e.g., to combat fading and remove correlation between coded bits in each modulation symbol) prior to puncturing. The unpunctured coded bits are grouped into non-binary symbols and mapped to modulation symbols (e.g., using Gray mapping). The modulation symbol may be “pre-conditioned” and prior to transmission.

摘要翻译： 能够基于信道实现的SNR以不同的信息比特率在多个“传输信道”上发送数据的（例如，OFDM）通信系统的编码技术。 基本码与公共或可变的打孔组合使用以实现传输信道所需的不同的编码速率。 针对数据传输的数据（即，信息比特）用基本码进行编码，并且针对每个信道（或具有相似传输能力的信道组）的编码比特被打孔以实现所需的编码率。 在穿孔之前，编码比特可以被交织（例如，以抵消衰落并消除每个调制符号中的编码比特之间的相关性）。 未经穿孔的编码比特被分组成非二进制符号并映射到调制符号（例如，使用灰色映射）。 调制符号可以是“预调节”并且在传输之前。