专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08811367B2 Qualifying available reverse link coding rates from access channel power setting 有权
标题翻译：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。

2. 发明授权

US07145964B2 Maximizing data rate by adjusting codes and code rates in CDMA system 有权
公开(公告)号：US07145964B2
公开(公告)日：2006-12-05
申请号：US11264847
申请日：2005-11-02
申请人： John E. Hoffmann , George Rodney Nelson, Jr. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, Jr.
发明人： John E. Hoffmann , George Rodney Nelson, Jr. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, Jr.
IPC分类号： H04L27/36
CPC分类号： H04L1/0048 , G11B20/1833 , H03M13/35 , H04B1/707 , H04J13/00 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0025 , H04L1/1809 , H04L1/1816 , H04L25/14 , H04L27/22 , H04L27/38 , H04L2001/0093 , H04L2001/0096
摘要： The present invention provides for making code rate adjustments and modulation type adjustments in a pseudonoise (PN) encoded CDMA system. Coding rate adjustments may be made by changing the number of information bits per symbol, or Forward Error Code (FEC) coding rate. A forward error correction (FEC) block size is maintained at a constant amount. Therefore, as the number of information bits per symbol are increased, an integer multiple of bits per epoch is always maintained. The scheme permits for a greater flexibility and selection of effective data rates providing information bit rates ranging from, for example, approximately 50 kilobits per second to over 5 mega bits per second (Mbps) in one preferred embodiment.

3. 发明授权

US07613227B2 Reverse link correlation filter in wireless communication systems 失效
标题翻译：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。

4. 发明授权

US07272169B2 Reverse link correlation filter in wireless communication systems 有权
标题翻译：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。

5. 发明授权

US07002902B2 Method and system for economical beam forming in a radio communication system 失效
公开(公告)号：US07002902B2
公开(公告)日：2006-02-21
申请号：US09791503
申请日：2001-02-23
申请人： James A. Proctor, Jr. , Lawrence Wayne LaMont, Jr. , George Rodney Nelson, Jr. , Antoine J. Rouphael , John E. Hoffmann
发明人： James A. Proctor, Jr. , Lawrence Wayne LaMont, Jr. , George Rodney Nelson, Jr. , Antoine J. Rouphael , John E. Hoffmann
IPC分类号： H04J11/00
CPC分类号： H01Q1/246 , H01Q3/26 , H04B7/0408 , H04B7/0678 , H04B7/0848 , H04J13/004 , H04W88/08
摘要： Codes are applied to signals to reduce the number of transceivers and associated RF cabling extending from base electronics to antenna array electronics in a base station providing beam forming. The transceivers can be reduced to as few as one, and the RF cabling can be reduced to none. The codes may be orthogonal codes, such as Walsh codes. The codes are applied: to weights used to produce the beam forming, signal being transmitted or received, or both. The codes are applied a second time to decompose the coded weights/signal to associate the weights and signal with the beam forming. The coded weights/signal can be summed, including with other coded weights/signals, to produce a composite code division multiplexed signal for transmission between transceiver(s) and antenna array electronics over a single RF or non-RF cable spanning between the base electronics and array electronics. The complexity, size, and cost of electronics and cables are reduced, and calibration of transceivers and demodulators can be eliminated.

6. 发明授权

US06801564B2 Reverse link correlation filter in wireless communication systems 有权
标题翻译：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。

7. 发明授权

US06301291B1 Pilot symbol assisted modulation and demodulation in wireless communication systems 有权
标题翻译：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。

8. 发明授权

US07502424B2 Maximizing data rate by adjusting codes and code rates 有权
标题翻译：通过调整代码和代码率来最大化数据速率
公开(公告)号：US07502424B2
公开(公告)日：2009-03-10
申请号：US11633970
申请日：2006-12-05
申请人： John E. Hoffmann , George Rodney Nelson, Jr. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, Jr.
发明人： John E. Hoffmann , George Rodney Nelson, Jr. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, Jr.
IPC分类号： H04L27/06
CPC分类号： H04L1/0048 , G11B20/1833 , H03M13/35 , H04B1/707 , H04J13/00 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0025 , H04L1/1809 , H04L1/1816 , H04L25/14 , H04L27/22 , H04L27/38 , H04L2001/0093 , H04L2001/0096
摘要： The present invention provides for making code rate adjustments and modulation type adjustments in a pseudonoise (PN) encoded CDMA system. Coding rate adjustments may be made by changing the number of information bits per symbol, or Forward Error Code (FEC) coding rate. A forward error correction (FEC) block size is maintained at a constant amount. Therefore, as the number of information bits per symbol are increased, an integer multiple of bits per epoch is always maintained. The scheme permits for a greater flexibility and selection of effective data rates providing information bit rates ranging from, for example, approximately 50 kilobits per second to over 5 mega bits per second (Mbps) in one preferred embodiment.
摘要翻译：本发明提供了在伪噪声（PN）编码的CDMA系统中进行码率调整和调制类型调整。可以通过改变每个符号的信息比特数或转发错误码（FEC）编码率来进行编码速率调整。前向纠错（FEC）块大小保持恒定的量。因此，随着每个符号的信息位的数量增加，始终保持每个时期的位的整数倍。在一个优选实施例中，该方案允许更大的灵活性和有效数据速率的选择，从而提供从例如大约50千比特每秒到超过5兆比特每秒（Mbps）的信息比特率。

9. 发明授权

US07483473B2 Access channel structure for wireless communication system 有权
标题翻译：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。

10. 发明授权

US07006483B2 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.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式