公开(公告)号：US20110150049A1

公开(公告)日：2011-06-23

申请号：US12645856

申请日：2009-12-23

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L27/28 ,  H04B1/38

CPC分类号： H04L5/0053 ,  H04L5/0048 ,  H04L5/0057

摘要： A method and apparatus for efficiently providing a large volume of channel feedback, e.g., for OFDM MISO and MIMO systems, is described herein. To that end, a mapping unit in an OFDM transceiver maps channel feedback values, e.g., received reference signal values or channel estimates derived therefrom, on a one-to-one basis to individual transmission subchannels. More particularly, the mapping unit maps a feedback value, e.g., the received reference value or a channel estimate derived therefrom, to a single transmission subchannel of an outgoing OFDM signal. For example, the mapping unit may map the feedback value to an input of a frequency transform unit, such as an inverse discrete Fourier transform unit, to map the feedback value to a single transmission subchannel comprising an OFDM transmission subcarrier. The OFDM transceiver transmits the outgoing OFDM signal to the remote transceiver to provide the feedback value to the remote transceiver.

摘要翻译： 本文描述了用于有效地提供大量信道反馈的方法和装置，例如用于OFDM MISO和MIMO系统。 为此，OFDM收发器中的映射单元将信道反馈值（例如，接收到的参考信号值或从其导出的信道估计）一一对应地映射到各个传输子信道。 更具体地，映射单元将例如所接收的参考值或其导出的信道估计的反馈值映射到输出OFDM信号的单个传输子信道。 例如，映射单元可以将反馈值映射到诸如逆离散傅立叶变换单元的频率变换单元的输入，以将反馈值映射到包括OFDM发送子载波的单个发送子信道。 OFDM收发器将输出的OFDM信号发送到远程收发器以向远程收发器提供反馈值。

公开(公告)号：US20080291821A1

公开(公告)日：2008-11-27

申请号：US11929268

申请日：2007-10-30

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04J11/00 ,  H04B7/216

CPC分类号： H04J13/10 ,  H04B1/7097 ,  H04B2201/709709

摘要： The technology in this application solves these problems (and others) and meets the desirable goals identified above (and others). The technology spreads a signal over an available discontinuous spectrum, such as a radio frequency band, so that the spread signal only occupies the non-contiguous spectrum. In this way, CDMA transmission and reception can be used in a fragmented or non-contiguous spectum that otherwise would not be useable for direct sequence spreading. Spreading over non-contiguous portions of spectrum is preferably performed without producing unacceptable interference in portions of unavailable spectrum located between the allowed spectrum. By avoiding unacceptable interference in portions of unavailable spectrum located between the allowed spectrum, the unavailable spectrum may be used by other users or services.

摘要翻译： 在这个应用中的技术解决了这些问题（和其他），并满足了上述（和其他）所确定的理想目标。 该技术在可用的不连续频谱（例如射频频带）上传播信号，使得扩展信号仅占据非连续频谱。 以这种方式，CDMA发送和接收可以用于分段或不连续的光谱，否则不能用于直接序列扩展。 优选地在频谱的非连续部分上扩展，而不会在位于允许频谱之间的不可用频谱的部分中产生不可接受的干扰。 通过避免位于允许频谱之间的部分不可用频谱中的不可接受的干扰，不可用频谱可被其他用户或服务使用。

公开(公告)号：US07184492B2

公开(公告)日：2007-02-27

申请号：US10361244

申请日：2003-02-10

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L27/04

CPC分类号： H04B7/0671 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0695

摘要： The invention comprises using beamforming antenna to coherently transmit an information signal to a receiver using two or more directional beams. In one embodiment, the phase and timing of the information signals carried by each directional beams are adjusted such that the signals arrive synchronously at the mobile terminal. Time synchronization may be obtained by delaying signals transmitted on selected directional beams to compensate for different propagation delays, or by preconditioning and filtering the signals using a channel coefficient matrix.

摘要翻译： 本发明包括使用波束形成天线使用两个或更多个定向波束将信息信号相干地发射到接收机。 在一个实施例中，调整每个定向波束所携带的信息信号的相位和定时，使得信号在移动终端同步到达。 可以通过延迟在所选定向波束上传输的信号来补偿不同的传播延迟，或通过使用信道系数矩阵预处理和滤波信号来获得时间同步。

公开(公告)号：US07155229B2

公开(公告)日：2006-12-26

申请号：US10041251

申请日：2002-01-08

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04Q7/20

CPC分类号： H04W16/32 ,  H04B1/715 ,  H04B2001/7154 ,  H04W36/18 ,  H04W88/085

摘要： A mobile communication system comprises a plurality of cells, with each cell including a network of microstations distributed more or less uniformly throughout the cell. A central controller connected to the network of microstations selects a group of microstations in the vicinity of the mobile terminal to transmit information to the mobile terminal. The selected microstations in the active set for a given mobile terminal is continuously updated as the mobile terminal moves through the network of microstations to form a virtual cell that follows the mobile terminal through the network. Transmission conflicts between two mobile terminals is avoided by inhibiting transmissions from an active microstation to at least one of the co-channel mobile terminals when a transmission conflict is detected.

公开(公告)号：US07027454B2

公开(公告)日：2006-04-11

申请号：US10007244

申请日：2001-11-13

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L12/28

CPC分类号： H01Q3/40 ,  H01Q21/061 ,  H01Q25/00

摘要： A transmitter is provided for simultaneously transmitting a plurality of signals in a plurality of directive beams to corresponding destination stations, each destination station located in a separate fan within a service area. The transmitter includes a plurality of beamformers, each beamformer receiving one of the signals to be transmitted to an associated fan, each of the beamformers having a plurality of outputs for each different signal to be transmitted. A plurality of Butler matrices each receive one of the plurality of outputs from the plurality of beamformers for each different signal to be transmitted, each Butler matrix having a plurality of outputs in phased relationship to one another, wherein each of the signals to be transmitted is simultaneously provided across the outputs of each Butler matrix in a phased relationship. An antenna is provided with an aperture within which a two-dimensional array of antenna elements are disposed, wherein equal fractions of adjacent antenna elements are connected to the outputs of each Butler matrix, and wherein each of the plurality of signals are simultaneously transmitted by the entire two-dimensional array of antenna elements. Each of the plurality of beamformers receives steering control signals for steering the direction of each beam within its respective fan.

公开(公告)号：US06961368B2

公开(公告)日：2005-11-01

申请号：US09770804

申请日：2001-01-26

申请人： Paul W. Dent ,  Howard Eugene Holshouser ,  John Charles Phillips ,  Rod Dolman ,  Ron Boesch

发明人： Paul W. Dent ,  Howard Eugene Holshouser ,  John Charles Phillips ,  Rod Dolman ,  Ron Boesch

IPC分类号： H04B1/04 ,  H04B1/40 ,  H04L5/16 ,  H04L27/04 ,  H04L27/06

CPC分类号： H03F3/24 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/0458 ,  H04B1/406

摘要： An adjustable matching network is provided for a wireless communications device transmitting and receiving signals in multiple frequency bands via an antenna. The adjustable matching network selectively connecting the antenna to a select power amplifier corresponding to a selected transmit frequency band and automatically matching the impedance of the antenna to the select power amplifier. The adjustable matching network also selectively connecting the antenna to a select bandpass filter corresponding to a selected receive frequency band and automatically matching the impedance of the antenna to the select bandpass filter.

摘要翻译： 为无线通信设备提供可调整的匹配网络，其经由天线在多个频带中发送和接收信号。 可调匹配网络将天线选择性地连接到对应于所选发射频带的选择功率放大器，并自动匹配天线与选择功率放大器的阻抗。 可调匹配网络还选择性地将天线连接到对应于所选接收频带的选择带通滤波器，并自动匹配天线与选择带通滤波器的阻抗。

公开(公告)号：US06944206B1

公开(公告)日：2005-09-13

申请号：US09718022

申请日：2000-11-20

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L1/00 ,  H04B1/707

CPC分类号： H04L1/0057 ,  H04L1/0054 ,  H04L1/0059 ,  H04L1/0065 ,  H04L1/0069 ,  H04L1/0071

摘要： Methods and systems are provided for communicating encoded data. L received encoded signal values including soft information are received and transformed to L data symbols. In various embodiments, the L received encoded signal values are demodulated and the demodulated L received encoded signal values are convolutional decoded using a rate one convolutional decoder having only one output symbol per input symbol to provide the L data symbols, wherein the L received encoded signal values are convolutional encoded using a rate one convolutional encoder having only one output symbol per input symbol. In other embodiments of the present invention the L received encoded signal values are transformed using associated spectral energy at a plurality of frequency ranges within a bandwidth of a channel over which the L received encoded signal values are received for at least one of the L received encoded signal values.

摘要翻译： 提供了用于传达编码数据的方法和系统。 L接收到包括软信息的编码信号值被接收并变换成L个数据符号。 在各种实施例中，L个接收编码信号值被解调，并且解调的L个接收编码信号值被卷积解码，使用一个速率一个卷积解码器，每个输入符号只有一个输出符号，以提供L个数据符号，其中L个接收编码信号 值使用仅具有每个输入符号的一个输出符号的速率一卷积编码器进行卷积编码。 在本发明的其他实施例中，L个接收编码信号值被使用在频道的带宽内的多个频率范围内使用相关联的频谱能量进行变换，在该频带的带宽内，L个接收的编码信号值被接收到L个接收编码的信号中的至少一个 信号值。

公开(公告)号：US06690798B1

公开(公告)日：2004-02-10

申请号：US09005439

申请日：1997-12-10

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04K100

CPC分类号： H04M1/68 ,  H04B7/1855 ,  H04L9/0625 ,  H04L9/0872 ,  H04L9/0891 ,  H04L9/3271 ,  H04L2209/56 ,  H04L2209/80 ,  H04M1/72519 ,  H04W12/02 ,  H04W12/06 ,  H04W88/02

摘要： A method and apparatus is described for transforming a key variable used for scrambling mobile data traffic between a terminal and a network in alternate ways based on a value transmitted to the terminal from the network. Transformation is accomplished by passing portions of the key variable through a series of S-boxes, which provide a mapping between inputs and outputs. The method and apparatus is explained also in the context of a satellite communications system, in which a terminal can be located in a different continent/country from the terminal's home location. Enciphered communication is enabled between the foreign satellite gateway and the roaming terminal after the foreign gateway communicates with the terminal's native gateway. The native gateway transmits one or more cipher variables in the communication. Moreover, the value determining which way to cipher the data traffic can be based on numerous factors, including aspects of the satellite communication system.

摘要翻译： 描述了一种方法和装置，用于基于从网络发送到终端的值，以替代方式来变换用于在终端和网络之间加扰移动数据业务的密钥变量。 通过将关键变量的一部分通过一系列S盒来实现转换，这些S盒提供输入和输出之间的映射。 该方法和装置也在卫星通信系统的上下文中被解释，其中终端可以位于与终端的归属位置不同的大陆/国家。 在外部网关与终端的本地网关通信之后，外部卫星网关与漫游终端之间能够进行加密的通信。 本地网关在通信中传送一个或多个密码变量。 此外，确定哪种方式来加密数据业务的价值可以基于许多因素，包括卫星通信系统的各个方面。

公开(公告)号：US06625200B1

公开(公告)日：2003-09-23

申请号：US09236083

申请日：1999-01-25

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L2730

CPC分类号： H04B1/70752 ,  H04B1/70735 ,  H04B1/708

摘要： Methods and systems for time synchronizing a receiver to a spread spectrum signal are described. Exemplary embodiments of the present invention provide for at least a two step process in which, at a first step, a number of candidate synchronization frequencies or timings are identified, followed by confirming one of the candidates as a correct synchronization state at a second or final step. According to the present invention, the confirmation step may be performed at the same time as the step of identifying further candidates by processing the same received signal samples in different ways.

摘要翻译： 描述了用于将接收机时间同步到扩频信号的方法和系统。 本发明的示例性实施例提供至少两步过程，其中在第一步骤中识别多个候选同步频率或定时，然后在第二或最后确认候选中的一个作为正确的同步状态 步。 根据本发明，可以通过以不同的方式处理相同的接收信号样本来识别其他候选的步骤的同时执行确认步骤。

公开(公告)号：US06567475B1

公开(公告)日：2003-05-20

申请号：US09222617

申请日：1998-12-29

申请人： Paul W. Dent ,  Rajaram Ramesh

发明人： Paul W. Dent ,  Rajaram Ramesh

IPC分类号： H04L100

CPC分类号： H04L27/186 ,  H04L27/0008

摘要： A method and system for the transmission, reception, and processing of 4-level and 8-level signaling symbols is provided. An inventive modulator is provided for modulating 4-level signaling symbols using an 8-level modulator. Further, this inventive modulator is able to produce 4-level modulation when modulating 4-level signaling symbols using an 8-level modulator, where the 4-level modulation represents the 4-level symbol sequence modulated. Further, a constrained/unconstrained demodulator is provided which is able to demodulate both 4-level signaling symbols and 8-level signaling symbols. The inventive demodulator accomplishes this by limiting the number of new symbol hypotheses and path histories to 4 when working with 4-level signaling symbols, and setting the number of new symbol hypotheses and path histories to 8 when working with 8-level signaling symbols. Additionally, an error correction decoder is provided which is also able to decode a demodulated signal which contains both 4-level and 8-level signaling symbols. The inventive error correction decoder accomplishes this by utilizing an interleaver that only places bits in the 2-bit positions of the 3-PSK soft values that correspond to the 2-bits of QPSK to decode 4-level signalling symbols, and utilizing an interleaver that places bits in all three of the possible bit positions of a symbol to decode 8-level signalling symbols.

摘要翻译： 提供了用于发送，接收和处理4级和8级信令符号的方法和系统。 提供了一种创造性调制器用于使用8电平调制器调制4电平信令符号。 此外，本发明的调制器能够在使用8电平调制器调制4电平信令符号时产生4电平调制，其中4电平调制表示4电平符号序列调制。 此外，提供了一种能够对4级信令符号和8级信令符号进行解调的约束/非约束解调器。 本发明的解调器通过在使用4级信令符号时将新的符号假设和路径历史的数量限制为4，并且在使用8级信令符号时将新的符号假设和路径历史的数量设置为8来实现。 此外，提供了一种纠错解码器，它还能够对包含4电平和8电平信号符号的解调信号进行解码。 本发明的纠错解码器通过利用仅将3-PSK软值的2位位置的位对应于QPSK的2位来解码4级信令符号的交织器来实现，并利用交织器 将位置在符号的所有三个可能位位置中，以解码8电平信令符号。