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    Qualifying available reverse link coding rates from access channel power setting
    1.
    发明授权
    Qualifying available reverse link coding rates from access channel power setting 有权
    从接入信道功率设置合格的可用的反向链路编码率

    公开(公告)号：US08811367B2

    公开(公告)日：2014-08-19

    申请号：US11295270

    申请日：2005-12-06

    申请人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John E. Hoffmann ,  Antoine J. Rouphael

    发明人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John E. Hoffmann ,  Antoine J. Rouphael

    IPC分类号： H04B7/216

    CPC分类号： H04W72/042 ,  H04J13/00 ,  H04J13/0003 ,  H04L5/22 ,  H04W24/00 ,  H04W28/22 ,  H04W48/08 ,  H04W52/24 ,  H04W52/26 ,  H04W52/365 ,  H04W72/0406 ,  H04W72/0446 ,  H04W72/0466 ,  H04W72/0473 ,  H04W72/048 ,  H04W72/1289 ,  Y02D70/00

    摘要： Data rate allocation decisions are made for a communications channel. A message is sent on a communication channel such as on a paging channel. The message indicates a forward Effective Radiate Power (ERP) of a pilot signal transmitted. The remote station then determines the received signal strength of this pilot signal, taking into account receiver gains. The path loss may be estimated as the difference between the forward ERP data value received and the detected received pilot power. This transmit power level information is encoded as a digital data word together with the forward path loss information. Upon transmission, the forward path loss estimate as calculated and the output power value can then help determine the amount of excess power available. This is indicative of the amount of dynamic range available in the transmit power amplifier. Coding rates which require a higher dynamic range may be acceptable for use.

    摘要翻译： 对通信信道进行数据速率分配决定。 在诸如寻呼信道的通信信道上发送消息。 该消息表示发送的导频信号的前向有效辐射功率（ERP）。 然后，远程站在考虑到接收机增益的情况下确定该导频信号的接收信号强度。 可以将路径损耗估计为所接收的前向ERP数据值与检测到的接收导频功率之间的差。 该发送功率电平信息与前向路径损耗信息一起被编码为数字数据字。 在传输时，计算出的前向路径损耗估计值和输出功率值可以帮助确定可用的多余功率量。 这表示发射功率放大器中可用的动态范围的量。 需要更高动态范围的编码速率可能是可以接受的。

    Reverse link correlation filter in wireless communication systems
    3.
    发明授权
    Reverse link correlation filter in wireless communication systems 失效
    无线通信系统中的反向链路相关滤波器

    公开(公告)号：US07613227B2

    公开(公告)日：2009-11-03

    申请号：US11901571

    申请日：2007-09-17

    申请人： Antoine J. Rouphael ,  John E. Hoffmann ,  George Rodney Nelson, Jr. ,  Samir K. Patel ,  James A. Proctor, Jr. ,  Daniel I. Riley

    发明人： Antoine J. Rouphael ,  John E. Hoffmann ,  George Rodney Nelson, Jr. ,  Samir K. Patel ,  James A. Proctor, Jr. ,  Daniel I. Riley

    IPC分类号： H04B1/00

    CPC分类号： H04B1/707 ,  H04B1/7105 ,  H04B1/712 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04B2201/7071

    摘要： A single, common correlation filter (CF) core is provided in a receiver for recovery of data from received code division multiple access (CDMA) signals. Signals are received over CDMA channels with different data rates, where the received signals include user information such as pilot and data symbols that have been spread according to different despreading rates including tier 1, tier 2 and tier 3 rates, where tier 1 is the smallest despreading rate. The received signal is correlated at the smallest despreading rate in the correlation filter (CF) by time multiplexing delayed versions of the pseudorandom noise (PN) code. The correlated information is then demultiplexed and pilot-aided QPSK demodulated. The demodulated information is summed at the proper integer multiple of the tier 1 rate to achieve tier 2 and tier 3 despreading rates. According to an embodiment, the three strongest multipaths components in terms of the received power are selected in a window or time period for optimal information recovery.

    摘要翻译： 在接收机中提供单个公共相关滤波器（CF）核，用于从接收的码分多址（CDMA）信号中恢复数据。 在具有不同数据速率的CDMA信道上接收信号，其中所接收的信号包括诸如导频和数据符号之类的用户信息，所述导频和数据符号根据不同的解扩速率（包括层1，层2和层3速率）进行扩展，其中层1是最小的 解散率。 接收到的信号通过伪随机噪声（PN）码的延迟版本的时间复用以相关滤波器（CF）中的最小解扩频率相关。 然后将相关信息解复用并导频辅助QPSK解调。 解调信息以1级速率的适当整数倍相加，以实现2级和3级解扩速率。 根据实施例，在用于最佳信息恢复的窗口或时间段中选择关于接收功率的三个最强多径分量。

    Reverse link correlation filter in wireless communication systems
    4.
    发明授权
    Reverse link correlation filter in wireless communication systems 有权
    无线通信系统中的反向链路相关滤波器

    公开(公告)号：US07272169B2

    公开(公告)日：2007-09-18

    申请号：US10957928

    申请日：2004-10-04

    申请人： Antoine J. Rouphael ,  John E. Hoffmann ,  George Rodney Nelson, Jr. ,  Samir K. Patel ,  James A. Proctor, Jr. ,  Daniel I. Riley

    发明人： Antoine J. Rouphael ,  John E. Hoffmann ,  George Rodney Nelson, Jr. ,  Samir K. Patel ,  James A. Proctor, Jr. ,  Daniel I. Riley

    IPC分类号： H04B1/00

    CPC分类号： H04B1/707 ,  H04B1/7105 ,  H04B1/712 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04B2201/7071

    摘要： A single, common correlation filter (CF) core is provided in a wireless system using CDMA. A plurality of channels with different data rates are provided in the wireless system. The channels provided in the wireless system include the access channel, the maintenance channel, and the traffic channel in which information (e.g., pilot or data symbols or both) is transmitted at the tier 1, tier 2 and tier 3 rates. The data rate for transmitting the information is programmable by digital signal processor (DSP). A user-unique code, such as a PN code, is applied to the information being transmitted in the channels of the wireless system. The information is QPSK modulated and transmitted in any one of the channels at any data rate. The transmitted information is correlated at the smallest data rate (i.e., the tier 1 rate) in the correlation filter (CF) of the wireless system by time multiplexing delayed versions of the PN code to the correlation filter core. The correlated information is then demultiplexed and pilot aided QPSK demodulated. The demodulated information is summed at the proper integer multiple of the tier 1 rate to achieve the tier 2 and tier 3 rates. The three strongest multipaths (in terms of the received power) are selected in a window or time period for optimal information recovery. Furthermore, three outputs from the demodulated information can be provided and combined for temporal diversity. Spatial diversity is achieved by providing a plurality of antennas at each receiver and a single, common correlation filter at each of the plurality of antennas of the receivers in the wireless system.

    摘要翻译： 在使用CDMA的无线系统中提供单个公共相关滤波器（CF）核。 在无线系统中提供具有不同数据速率的多个信道。 在无线系统中提供的信道包括接入信道，维护信道和业务信道，信道（例如，导频或数据符号或两者）以层1，层2和层3速率被传输。 用于传输信息的数据速率可由数字信号处理器（DSP）编程。 诸如PN码的用户唯一码被应用于在无线系统的频道中发送的信息。 该信息以任何数据速率在任何一个信道中进行QPSK调制和传输。 所发送的信息通过将PN码的延迟版本时间复用到相关滤波器核心，以无线系统的相关滤波器（CF）中的最小数据速率（即，层1速率）相关。 然后将相关信息解复用并进行导频辅助QPSK解调。 解调信息以1级速率的适当整数倍相加，以实现2级和3级速率。 在窗口或时间段中选择三个最强的多路径（以接收功率计），以获得最佳信息恢复。 此外，可以提供来自解调信息的三个输出并将其组合用于时间分集。 通过在每个接收机处提供多个天线以及在无线系统中的接收机的多个天线的每个天线处提供单个公共相关滤波器来实现空间分集。

    Reverse link correlation filter in wireless communication systems
    6.
    发明授权
    Reverse link correlation filter in wireless communication systems 有权
    无线通信系统中的反向链路相关滤波器

    公开(公告)号：US06801564B2

    公开(公告)日：2004-10-05

    申请号：US09738934

    申请日：2000-12-15

    申请人： Antoine J. Rouphael ,  John E. Hoffmann ,  George Rodney Nelson, Jr. ,  Samir K. Patel ,  James A. Proctor, Jr. ,  Daniel I. Riley

    发明人： Antoine J. Rouphael ,  John E. Hoffmann ,  George Rodney Nelson, Jr. ,  Samir K. Patel ,  James A. Proctor, Jr. ,  Daniel I. Riley

    IPC分类号： H04B1500

    CPC分类号： H04B1/707 ,  H04B1/7105 ,  H04B1/712 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04B2201/7071

    摘要： A single, common correlation filter (CF) core is provided in a wireless system using CDMA. A plurality of channels with different data rates are provided in the wireless system. The channels provided in the wireless system include the access channel, the maintenance channel, and the traffic channel in which information (e.g., pilot or data symbols or both) is transmitted at the tier 1, tier 2 and tier 3 rates. The data rate for transmitting the information is programmable by digital signal processor (DSP). A user-unique code, such as a PN code, is applied to the information being transmitted in the channels of the wireless system. The information is QPSK modulated and transmitted in any one of the channels at any data rate. The transmitted information is correlated at the smallest data rate (i.e., the tier 1 rate) in the correlation filter (CF) of the wireless system by time multiplexing delayed versions of the PN code to the correlation filter core. The correlated information is then demultiplexed and pilot aided QPSK demodulated. The demodulated information is summed at the proper integer multiple of the tier 1 rate to achieve the tier 2 and tier 3 rates. The three strongest multipaths (in terms of the received power) are selected in a window or time period for optimal information recovery. Furthermore, three outputs from the demodulated information can be provided and combined for temporal diversity. Spatial diversity is achieved by providing a plurality of antennas at each receiver and a single, common correlation filter at each of the plurality of antennas of the receivers in the wireless system.

    摘要翻译： 在使用CDMA的无线系统中提供单个公共相关滤波器（CF）核。 在无线系统中提供具有不同数据速率的多个信道。 在无线系统中提供的信道包括接入信道，维护信道和业务信道，信道（例如，导频或数据符号或两者）以层1，层2和层3速率被传输。 用于传输信息的数据速率可由数字信号处理器（DSP）编程。 诸如PN码的用户唯一码被应用于在无线系统的频道中发送的信息。 该信息以任何数据速率在任何一个信道中进行QPSK调制和传输。 所发送的信息通过将PN码的延迟版本时间复用到相关滤波器核心，以无线系统的相关滤波器（CF）中的最小数据速率（即，层1速率）相关。 然后将相关信息解复用并进行导频辅助QPSK解调。 解调信息以1级速率的适当整数倍相加，以实现2级和3级速率。 在窗口或时间段中选择三个最强的多路径（以接收功率计），以获得最佳信息恢复。 此外，可以提供来自解调信息的三个输出并将其组合用于时间分集。 通过在每个接收机处提供多个天线以及在无线系统中的接收机的多个天线的每个天线处提供单个公共相关滤波器来实现空间分集。

    Pilot symbol assisted modulation and demodulation in wireless communication systems
    7.
    发明授权
    Pilot symbol assisted modulation and demodulation in wireless communication systems 有权
    无线通信系统中的导频符号辅助调制和解调

    公开(公告)号：US06301291B1

    公开(公告)日：2001-10-09

    申请号：US09497440

    申请日：2000-02-03

    申请人： Antoine J. Rouphael ,  John E. Hoffmann ,  James A. Proctor, Jr. ,  George Rodney Nelson, Jr.

    发明人： Antoine J. Rouphael ,  John E. Hoffmann ,  James A. Proctor, Jr. ,  George Rodney Nelson, Jr.

    IPC分类号： H04B1707

    CPC分类号： H04L25/0228 ,  H04L27/22

    摘要： A transmitter which includes a quadrature phase shift keying (QPSK) modulator, and a receiver which includes a pilot correlation filter (PCF), a data matching filter (DMF), a timing recovery mechanism, a sampler, and a QPSK demodulator are provided in a wireless communication system. The transmitter transmits a frame of data symbols and pilot symbols to a receiver in a wireless system. The pilot symbols are inserted in the frame at known time intervals. The QPSK modulator modulates the frame of data and pilot symbols. As the receiver receives the frame of data and pilot symbols from the transmitter, the PCF recovers the pilot symbols sent by the transmitter, whereas the timing recovery mechanism tracks the timing of the pilot symbols in the frame. The DMF enhances the multipath response of the frame of data and pilot symbols at the known time intervals of the pilot symbols, and outputs a plurality of enhanced peaks. The sampler samples the multipath response of the frame of data and pilot symbols at each of the enhanced peaks. The QPSK demodulator demodulates the sampled frame of data and pilot symbols and recovers the data symbols using QPSK demodulation based on the sampled frame.

    摘要翻译： 包括正交相移键控（QPSK）调制器的发射机和包括导频相关滤波器（PCF），数据匹配滤波器（DMF），定时恢复机制，采样器和QPSK解调器的接收机被提供在 无线通信系统。 发射机将数据符号和导频符号的帧发送到无线系统中的接收机。 导频符号以已知的时间间隔插入帧中。 QPSK调制器调制数据帧和导频符号。 当接收机从发射机接收数据帧和导频符号时，PCF恢复由发射机发送的导频符号，而定时恢复机制跟踪帧中导频符号的定时。 DMF以导频符号的已知时间间隔增强数据帧和导频符号的多径响应，并输出多个增强峰。 采样器在每个增强峰值处采样数据帧和导频符号的多路径响应。 QPSK解调器解调采样的数据帧和导频符号，并使用基于采样帧的QPSK解调来恢复数据符号。

    Access channel structure for wireless communication system
    9.
    发明授权
    Access channel structure for wireless communication system 有权
    无线通信系统的接入信道结构

    公开(公告)号：US07483473B2

    公开(公告)日：2009-01-27

    申请号：US11103202

    申请日：2005-04-11

    申请人： John E. Hoffmann ,  George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  Antoine J. Rouphael

    发明人： John E. Hoffmann ,  George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  Antoine J. Rouphael

    IPC分类号： H04L27/30

    CPC分类号： H04L5/0046 ,  H04B1/707 ,  H04B2201/70701 ,  H04L7/041

    摘要： A technique for efficient implementation of pilot signals on a reverse link in a wireless communication system. An access channel is defined for the reverse link such that within each frame, or epoch, a portion is dedicated to sending only pilot symbols. Another portion of the frame is reserved for sending mostly data symbols; however, within this second portion of the frame, additional pilot symbols are interleaved among the data symbols. The pilot symbol or preamble portion of the access channel frame allows for efficient acquisition of the access signal at the base station, while providing a timing reference for determining the effects of multipath fading. In particular, a pilot correlation filter provides a phase estimate from the pilot symbols in the preamble portion, which is then used to decode the data symbols in the payload portion. An access acquisition portion of the receiver uses the phase estimates provided by the pilot correlation filter to process the output of a data symbol correlation filter. The additional pilot symbols embedded in the payload portion are used in a cross product operation to further resolve the effects of multipath fading.

    摘要翻译： 一种在无线通信系统中在反向链路上有效实现导频信号的技术。 为反向链路定义了一个接入信道，使得在每个帧或时期内，一部分专用于仅发送导频符号。 帧的另一部分保留用于主要发送数据符号; 然而，在帧的该第二部分内，在数据符号之间交织附加的导频符号。 访问信道帧的导频符号或前导码部分允许在基站处有效地获取接入信号，同时提供用于确定多径衰落的影响的定时参考。 具体地，导频相关滤波器从前导码部分中的导频符号提供相位估计，然后该导频符号用于解码有效载荷部分中的数据符号。 接收机的访问获取部分使用由导频相关滤波器提供的相位估计来处理数据符号相关滤波器的输出。 嵌入在有效载荷部分中的附加导频符号用于交叉乘积运算，以进一步解决多路径衰落的影响。

    Qualifying available reverse link coding rates from access channel power setting
    10.
    发明授权
    Qualifying available reverse link coding rates from access channel power setting 有权

    公开(公告)号：US07006483B2

    公开(公告)日：2006-02-28

    申请号：US09792637

    申请日：2001-02-23

    申请人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John E. Hoffmann ,  Antoine J. Rouphael

    发明人： George Rodney Nelson, Jr. ,  James A. Proctor, Jr. ,  John E. Hoffmann ,  Antoine J. Rouphael

    IPC分类号： H04B7/212

    CPC分类号： H04W72/042 ,  H04J13/00 ,  H04J13/0003 ,  H04L5/22 ,  H04W24/00 ,  H04W28/22 ,  H04W48/08 ,  H04W52/24 ,  H04W52/26 ,  H04W52/365 ,  H04W72/0406 ,  H04W72/0446 ,  H04W72/0466 ,  H04W72/0473 ,  H04W72/048 ,  H04W72/1289 ,  Y02D70/00

    摘要： Data rate allocation decisions are made for a communications channel, such as a wireless reverse link connection. A first parameter used in this determination is a path loss, which is determined by the following process. First, a message is sent from a first station to a second station, such as on a paging channel. The message indicates a forward Effective Radiated Power (ERP) of a pilot signal transmitted by the first station. The second station then determines the received signal strength of this pilot signal, taking into account receiver gains. The path loss can then be estimated by the second station as the difference between the forward ERP data value that it received and the detected received pilot power. The second station also then preferably determines a transmit power level when transmitting a message back to the first station. This transmit power level information is encoded as a digital data word together with the forward path loss information as calculated by the first station. Upon receipt of these two pieces of information by the first station, the forward path loss estimate as calculated by the second station, and the output power value of the second station, the first station can then determine the amount of excess power available at the field unit. This excess power difference is indicative of the amount of dynamic range available in the transmit power amplifier in the particular second station. With this information, the first station can then make a determination as to whether coding rates which require a higher dynamic range will be acceptable for use by the particular second station.