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1. 发明授权

US07149238B2 Highly bandwidth-efficient communications 失效
公开(公告)号：US07149238B2
公开(公告)日：2006-12-12
申请号：US11409437
申请日：2006-04-21
申请人： Brian G. Agee , Matthew Bromberg , Derek Gerlach , David Gibbons , James Timothy Golden , Minnic Ho , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Robert G. Mechaley, Jr. , Robert Ray Naish , David J. Nix , David James Ryan , David Stephenson
发明人： Brian G. Agee , Matthew Bromberg , Derek Gerlach , David Gibbons , James Timothy Golden , Minnic Ho , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Robert G. Mechaley, Jr. , Robert Ray Naish , David J. Nix , David James Ryan , David Stephenson
IPC分类号： H04B1/69
CPC分类号： H04B1/69 , H04B1/692 , H04B1/707 , H04B1/7107 , H04B7/04 , H04B2201/70702 , H04L5/0021 , H04L5/0026 , H04L5/0048 , H04L5/026 , H04L25/0228 , H04L25/03019 , H04L27/186 , H04L27/3416 , H04L2025/03414 , H04L2025/03426 , H04W16/14 , H04W88/08
摘要： A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms. In a specific embodiment the spectral and spatial components of the adaptive weights are calculated in a unified operation based on the mathematical analogy between the spectral and spatial descriptions of the airlink.

2. 发明授权

US06621851B1 Priority messaging method for a discrete multitone spread spectrum communications system 失效
标题翻译：用于离散多音频扩频通信系统的优先消息传递方法
公开(公告)号：US06621851B1
公开(公告)日：2003-09-16
申请号：US09723337
申请日：2000-11-28
申请人： Brian G. Agee , Matthew Bromberg , Derek Gerlach , David Gibbons , James Timothy Golden , Minnie Ho , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Robert G. Mechaley, Jr. , Robert Ray Naish , David J. Nix , David James Ryan , David Stephenson
发明人： Brian G. Agee , Matthew Bromberg , Derek Gerlach , David Gibbons , James Timothy Golden , Minnie Ho , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Robert G. Mechaley, Jr. , Robert Ray Naish , David J. Nix , David James Ryan , David Stephenson
IPC分类号： H04B169
CPC分类号： H04B1/69 , H04B1/692 , H04B1/707 , H04B1/7107 , H04B7/04 , H04B2201/70702 , H04L5/0021 , H04L5/0026 , H04L5/0048 , H04L5/026 , H04L25/0228 , H04L25/03019 , H04L27/186 , H04L27/3416 , H04L2025/03414 , H04L2025/03426 , H04W16/14 , H04W88/08
摘要： A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms. In a specific embodiment the spectral and spatial components of the adaptive weights are calculated in a unified operation based on the mathematical analogy between the spectral and spatial descriptions of the airlink.
摘要翻译：离散多媒体叠层载波扩频通信方法是基于频域扩展，包括基带信号乘以叠加的或叠加的复数正弦波载波的集合。在优选实施例中，扩展涉及激励大的快速傅立叶变换（FFT）的信息仓。这为中等输出FFT大小节省了大量的计算复杂度。点对多点和多点到多点（无节点）网络拓扑是可能的。通过利用各种光源的光谱多样性，可以包括一个代码归零方法用于干扰消除和增强的信号分离。基本方法可以扩展为包括用于干扰消除的多元天线阵列归零方法和使用空间分离的增强信号分离。这种方法允许适应或可以适应于无线电环境的指导和逆向传输系统。这样的系统与带宽按需和高阶调制格式兼容，并且使用高级适配算法。在具体实施例中，基于空中链路的频谱和空间描述之间的数学类比，以统一的操作来计算自适应权重的频谱和空间分量。

3. 发明授权

US06289037B1 Out of channel cyclic redundancy code method for a discrete multitone spread spectrum communications system 失效
公开(公告)号：US06289037B1
公开(公告)日：2001-09-11
申请号：US08803831
申请日：1997-02-24
申请人： David Gibbons , Robert Lee Maxwell , David James Ryan
发明人： David Gibbons , Robert Lee Maxwell , David James Ryan
IPC分类号： H04L2730
CPC分类号： H04L1/0003 , H04B1/69 , H04L1/0045 , H04L1/0057 , H04L1/16
摘要： A new method makes the most efficient use of the scarce spectral bandwidth in a wireless discrete multitone spread spectrum communications system. Each remote station and each base station in the network prepares an error detection field, such as a cyclic code (CRC), on each block of data to be transmitted over the traffic channels. The sending station prepares an error detection message for transmission over the link control channel of the network. The sending station prepares the error detection message by forming a link control channel vector that will be spread using the discrete multitone spread spectrum (DMT-SS) protocol to distribute the data message over a plurality of discrete tone frequencies, forming a spread signal for the link control channel. A link control channel is associated with communications session using the traffic channels. The instant of transmission of the error detection message is allowed to be different from the instant of transmission of the data message. This permits the error detection messages to be transmitted when capacity is available on the link control channel. The receiving station buffers the error detection messages it receives from the link control channel, so that they are accessible by their block numbers. When the receiving station receives a data message on the traffic channel, it performs a CRC calculation on the data block in the message to obtain a resulting new CRC value. The new CRC value is also buffered at the receiving station with the block number so that it is accessible by its block number. Then, when both the received error message and the new CRC value are both available at the receiving station, they are matched by their common block number. The received CRC value in the error detection message is compared with the new CRC computed from the received data block. If the comparison determines that there is a difference in the values, then an error signal is generated.

4. 发明授权

US07095708B1 Methods and apparatus for use in communicating voice and high speed data in a wireless communication system 有权
标题翻译：用于在无线通信系统中传送语音和高速数据的方法和装置
公开(公告)号：US07095708B1
公开(公告)日：2006-08-22
申请号：US09594467
申请日：2000-06-14
申请人： Siavash Alamouti , Jeffrey Battin , David B. Gibbons , James Timothy Golden , Michael R. Hirano , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Steven E. McMeekin , David J. Nix , David James Ryan , Gregory J. Veintimilla , Hongliang Zhang
发明人： Siavash Alamouti , Jeffrey Battin , David B. Gibbons , James Timothy Golden , Michael R. Hirano , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Steven E. McMeekin , David J. Nix , David James Ryan , Gregory J. Veintimilla , Hongliang Zhang
IPC分类号： H04J11/00
CPC分类号： H04L27/2627 , H04L5/0007 , H04L5/0048 , H04L5/143 , H04L27/2604 , H04L27/34
摘要： A fixed wireless system (FWS) utilizing Orthogonal Frequency Division Multiplexing (OFDM) communication techniques is spectrally efficient and responsive to communications involving both voice and high speed data, such as Internet data. The FWS includes a wireless base unit; a plurality of fixed wireless remote units; a plurality of wireless data traffic channels available between the wireless base unit and the plurality of fixed wireless remote units; and a plurality of wireless voice traffic channels available between the wireless base unit and the plurality of fixed wireless remote units. Each wireless traffic channel is identifiable by a unique combination of frequency and time slots. Each wireless data traffic channel is used for carrying high speed data in addressed data packets to and from the plurality of fixed wireless remote units. On the other hand, each wireless voice traffic channel can be assigned and dedicated to a particular voice communication call involving one of the plurality of fixed wireless remote units for carrying voice data of the call.
摘要翻译：使用正交频分复用（OFDM）通信技术的固定无线系统（FWS）对于涉及语音和高速数据（诸如因特网数据）的通信是有效的并且响应。 FWS包括无线基站单元; 多个固定无线遥控单元; 在无线基站单元和多个固定无线远程单元之间可用的多个无线数据业务信道; 以及在无线基站单元和多个固定无线远程单元之间可用的多个无线语音业务信道。每个无线业务信道可以通过频率和时隙的独特组合来识别。每个无线数据业务信道用于承载来自多个固定无线远程单元的寻址数据分组中的高速数据。另一方面，每个无线语音业务信道可以被分配并专用于涉及用于承载该呼叫的语音数据的多个固定无线远程单元中的一个的特定语音通信呼叫。

5. 发明授权

US06359923B1 Highly bandwidth efficient communications 失效
标题翻译：高带宽高效通信
公开(公告)号：US06359923B1
公开(公告)日：2002-03-19
申请号：US08993721
申请日：1997-12-18
申请人： Brian G. Agee , Matthew Bromberg , Derek Gerlach , David Gibbons , James Timothy Golden , Minnie Ho , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Robert G. Mechaley, Jr. , Robert Ray Naish , David J. Nix , David James Ryan , David Stephenson
发明人： Brian G. Agee , Matthew Bromberg , Derek Gerlach , David Gibbons , James Timothy Golden , Minnie Ho , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Robert G. Mechaley, Jr. , Robert Ray Naish , David J. Nix , David James Ryan , David Stephenson
IPC分类号： A61F206
CPC分类号： H04B1/69 , H04B1/692 , H04B1/707 , H04B1/7107 , H04B7/04 , H04B2201/70702 , H04L5/0021 , H04L5/0026 , H04L5/0048 , H04L5/026 , H04L25/0228 , H04L25/03019 , H04L27/186 , H04L27/3416 , H04L2025/03414 , H04L2025/03426 , H04W16/14 , H04W88/08
摘要： A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective rev transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms. In a specific embodiment the spectral and spatial components of the adaptive weights are calculated in a unified operation based on the mathematical analogy between the spectral and spatial descriptions of the airlink.
摘要翻译：离散多媒体叠层载波扩频通信方法是基于频域扩展，包括基带信号乘以叠加的或叠加的复数正弦波载波的集合。在优选实施例中，扩展涉及激励大的快速傅立叶变换（FFT）的信息仓。这为中等输出FFT大小节省了大量的计算复杂度。点对多点和多点到多点（无节点）网络拓扑是可能的。通过利用各种光源的光谱多样性，可以包括一个代码归零方法用于干扰消除和增强的信号分离。基本方法可以扩展为包括用于干扰消除的多元天线阵列归零方法和使用空间分离的增强信号分离。这种方法允许适应或可以适应于无线电环境的指令和逆向转发传输系统。这样的系统与带宽按需和高阶调制格式兼容，并且使用高级适配算法。在具体实施例中，基于空中链路的频谱和空间描述之间的数学类比，以统一的操作来计算自适应权重的频谱和空间分量。

6. 发明授权

US07106781B2 Highly bandwidth-efficient communications 有权
公开(公告)号：US07106781B2
公开(公告)日：2006-09-12
申请号：US09920903
申请日：2001-08-03
申请人： Brian G. Agee , Matthew Bromberg , Derek Gerlach , David Gibbons , James Timothy Golden , Minnie Ho , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Robert G. Mechaley, Jr. , Robert Ray Naish , David J. Nix , David James Ryan , David Stephenson
发明人： Brian G. Agee , Matthew Bromberg , Derek Gerlach , David Gibbons , James Timothy Golden , Minnie Ho , Elliott Hoole , Mary Jesse , Robert Lee Maxwell , Robert G. Mechaley, Jr. , Robert Ray Naish , David J. Nix , David James Ryan , David Stephenson
IPC分类号： H04B1/69 , H04B7/216
CPC分类号： H04B1/69 , H04B1/692 , H04B1/707 , H04B1/7107 , H04B7/04 , H04B2201/70702 , H04L5/0021 , H04L5/0026 , H04L5/0048 , H04L5/026 , H04L25/0228 , H04L25/03019 , H04L27/186 , H04L27/3416 , H04L2025/03414 , H04L2025/03426 , H04W16/14 , H04W88/08
摘要： A discrete multitone stacked-carrier spread spectrum communication method is based on frequency domain spreading including multiplication of a baseband signal by a set of superimposed, or stacked, complex sinusoid carrier waves. In a preferred embodiment, the spreading involves energizing the bins of a large Fast Fourier transform (FFT). This provides a considerable savings in computational complexity for moderate output FFT sizes. Point-to-multipoint and multipoint-to-multipoint (nodeless) network topologies are possible. A code-nulling method is included for interference cancellation and enhanced signal separation by exploiting the spectral diversity of the various sources. The basic method may be extended to include multielement antenna array nulling methods for interference cancellation and enhanced signal separation using spatial separation. Such methods permit directive and retrodirective transmission systems that adapt or can be adapted to the radio environment. Such systems are compatible with bandwidth-on-demand and higher-order modulation formats and use advanced adaptation algorithms. In a specific embodiment the spectral and spatial components of the adaptive weights are calculated in a unified operation based on the mathematical analogy between the spectral and spatial descriptions of the airlink.

7. 发明授权

US06944299B1 Method for synchronous encryption over a communication medium 有权
标题翻译：通信介质同步加密方法
公开(公告)号：US06944299B1
公开(公告)日：2005-09-13
申请号：US09204048
申请日：1998-12-02
申请人： Padma P. Mallela , Robert Lee Maxwell , David J. Nix , Gregory J. Veintimilla , Adrian M. Yip
发明人： Padma P. Mallela , Robert Lee Maxwell , David J. Nix , Gregory J. Veintimilla , Adrian M. Yip
IPC分类号： H04L9/00 , H04N7/167
CPC分类号： H04L9/12 , H04N21/2347 , H04N21/43637
摘要： An apparatus and method provide for synchronized operation of encryption processes at two remote communication terminals. A first one of the terminals detects information associated with a current time during the establishment of a connection between the two terminals. The current time information is then utilized to create a start encryption time. That start encryption time information is transmitted from the first terminal to the second terminal. Both terminals then monitor the passage of time and begin encryption in a synchronous manner when the current time matches the start encryption time.
摘要翻译：一种装置和方法提供两个远程通信终端上的加密过程的同步操作。在建立两个终端之间的连接时，终端中的第一个检测与当前时间相关联的信息。然后利用当前时间信息来创建开始加密时间。该开始加密时间信息从第一终端发送到第二终端。两个终端随后监视时间的流逝，并在当前时间与开始加密时间匹配时以同步方式开始加密。

8. 发明授权

US06639935B2 Out of channel cyclic redundancy code method for a discrete multitone spread spectrum communications system 失效
公开(公告)号：US06639935B2
公开(公告)日：2003-10-28
申请号：US09902730
申请日：2001-07-12
申请人： David Gibbons , Robert Lee Maxwell , David James Ryan
发明人： David Gibbons , Robert Lee Maxwell , David James Ryan
IPC分类号： H04B169
CPC分类号： H04L1/0003 , H04B1/69 , H04L1/0045 , H04L1/0057 , H04L1/16
摘要： A new method makes the most efficient use of the scarce spectral bandwidth in a wireless discrete multitone spread spectrum communications system. Each remote station and each base station in the network prepares an error detection field, such as a cyclic redundancy code (CRC), on each block of data to be transmitted over the traffic channels. The sending station prepares an error detection message for transmission over the link control channel of the network. The sending station prepares the error detection message by forming a link control channel vector that will be spread using the discrete multitone spread spectrum (DMT-SS) protocol to distribute the data message over a plurality of discrete tone frequencies, forming a spread signal for the link control channel. A link control channel is associated with communications session using the traffic channels. The instant of transmission of the error detection message is allowed to be different from the instant of transmission of the data message. This permits the error detection messages to be transmitted when capacity is available on the link control channel. The receiving station buffers the error detection messages it receives from the link control channel, so that they are accessible by their block numbers. When the receiving station receives a data message on the traffic channel, it performs a CRC calculation on the data block in the message to obtain a resulting new CRC value. The new CRC value is also buffered at the receiving station with the block number so that it is accessible by its block number. Then, when both the received error message and the new CRC value are both available at the receiving station, they are matched by their common block number. The received CRC value in the error detection message is compared with the new CRC computed from the received data block. If the comparison determines that there is a difference in the values, then an error signal is generated.

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