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1. 发明授权

US07526051B1 Method and system for interference cancellation for high spectral efficiency satellite communications 有权
标题翻译：用于高频谱效率卫星通信的干扰消除方法和系统
公开(公告)号：US07526051B1
公开(公告)日：2009-04-28
申请号：US09401694
申请日：1999-09-23
申请人： Bassel F. Beidas , Stanley E. Kay , A. Roger Hammons, Jr.
发明人： Bassel F. Beidas , Stanley E. Kay , A. Roger Hammons, Jr.
IPC分类号： H04B1/10 , H04L1/00
CPC分类号： H04B1/123 , H04L25/03057
摘要： Systems and methods for interference cancellation for high spectral efficiency satellite communications enabling efficient utilization of available bandwidth through overlapping adjacent channels. Data information is received along with noise information, and a filter bank is adapted to receive and filter the waveform and output channel information including a combination of data signals and adjacent channel interference signals. The filter bank is further adapted to provide estimated data signals and to calculate estimated interference signals. One or more interference generating processors are adapted to receive the calculated estimated interference signals to enable the interference generating processor to generate interference signals corresponding to the calculated estimated interference signals. The interference generating processor subtracts the interference signals from the estimated data signals in order to output relatively more accurate estimated data signals. A decision device is provided for use with the interference generating processors for estimating data signals in accordance with the relative ability of the interference processor to cancel interference with the estimated interference signals.
摘要翻译：用于高频谱效率卫星通信的干扰消除的系统和方法，能够通过重叠的相邻信道有效利用可用带宽。数据信息与噪声信息一起被接收，并且滤波器组适于接收和滤波波形并且输出包括数据信号和相邻信道干扰信号的组合的信道信息。滤波器组还适于提供估计的数据信号并计算估计的干扰信号。一个或多个干扰产生处理器适于接收所计算的估计干扰信号，以使干扰产生处理器产生对应于所计算的估计干扰信号的干扰信号。干扰产生处理器从估计的数据信号中减去干扰信号，以便输出相对更准确的估计数据信号。提供了一种与干扰产生处理器一起使用的判定装置，用于根据干扰处理器相对于估计干扰信号的干扰的相对能力来估计数据信号。

2. 发明授权

US06263031B1 Method and apparatus for signal burst classification 失效
标题翻译：信号突发分类的方法和装置
公开(公告)号：US06263031B1
公开(公告)日：2001-07-17
申请号：US09109799
申请日：1998-07-02
申请人： Bassel F. Beidas , A. Roger Hammons, Jr. , Yezdi F. Antia
发明人： Bassel F. Beidas , A. Roger Hammons, Jr. , Yezdi F. Antia
IPC分类号： H04L2706
CPC分类号： H04L7/042 , H04L27/22 , H04L2027/0065 , H04L2027/0093 , H04L2027/0095
摘要： A burst classifier is useful in a digital communication system transmitting a signal burst of a plurality of different burst types. The burst classifier includes a plurality of filters associated with the plurality of different burst types, respectively. Each filter generates correlation data based on the signal burst and a respective plurality of reference signals offset by a plurality of time offsets. The respective pluralities of reference signals are indicative of a corresponding burst type of the plurality of different burst types. A comparator then analyzes quantities based on the correlation data from each filter to determine the burst type of the signal burst.
摘要翻译：突发分类器在传输多种不同突发类型的信号突发的数字通信系统中是有用的。突发分类器分别包括与多个不同突发类型相关联的多个滤波器。每个滤波器基于信号脉冲串和由多个时间偏移偏移的相应多个参考信号来产生相关数据。相应的多个参考信号指示多个不同突发类型的相应突发类型。比较器然后基于来自每个滤波器的相关数据分析量，以确定信号脉冲串的脉冲串类型。

3. 发明授权

US07596323B1 Optical communications systems, devices, and methods 有权
标题翻译：光通信系统，设备和方法
公开(公告)号：US07596323B1
公开(公告)日：2009-09-29
申请号：US11324936
申请日：2006-01-04
申请人： Alistair J. Price , Bassel F. Beidas , Terry L. Bittner , A. Roger Hammons, Jr. , William M. Kirschner , Daniel F. McAlister , Shou Y. Mui
发明人： Alistair J. Price , Bassel F. Beidas , Terry L. Bittner , A. Roger Hammons, Jr. , William M. Kirschner , Daniel F. McAlister , Shou Y. Mui
IPC分类号： H04B10/12 , H04J14/00
CPC分类号： H04B10/25133 , H04B10/0775 , H04B10/07951 , H04J14/0298 , H04L27/2096
摘要： A method and apparatus for estimating fiber dispersion in an optical communication system including transmitting an optical signal carrying a unique word along an optical communication path, receiving the optical signal carrying the unique word from the optical communication path, producing an electrical signal corresponding to the received unique word, and processing the electrical signal corresponding to the received unique word to produce an estimate of the fiber dispersion in the optical communication system.
摘要翻译：一种用于估计光通信系统中的光纤色散的方法和装置，包括：沿着光通信路径发送携带唯一字的光信号，从光通信路径接收携带唯一字的光信号，产生对应于所接收的电信号的电信号并且处理与所接收的唯一字对应的电信号以产生光通信系统中的光纤色散的估计。

4. 发明授权

US06608874B1 Method and apparatus for quadrature multi-pulse modulation of data for spectrally efficient communication 失效
标题翻译：用于频谱高效通信的数据的正交多脉冲调制方法和装置
公开(公告)号：US06608874B1
公开(公告)日：2003-08-19
申请号：US09005469
申请日：1998-01-12
申请人： Bassel F. Beidas , A. Roger Hammons, Jr.
发明人： Bassel F. Beidas , A. Roger Hammons, Jr.
IPC分类号： H03K702
CPC分类号： H04L27/18 , H03K7/02 , H04L25/03834
摘要： A modulator produces a modulated signal including a carrier and data signals representing data bits. The data signals include at least two in-phase modulating pulses which have different shapes and which are interfering in time and frequency; the data signals further include at least two quadrature modulating pulses which have different shapes and which are interfering in time and frequency. The modulator includes a filter for producing each shape of pulse, and combining circuits for combining the pulses with each other and with a carrier. The demodulator (or receiver) receives the combined signal and separates the pulses from the carrier. The demodulator further includes filters for separating the pulses, and a circuit for processing the pulses to reproduce the data bits. The processing circuit preferably includes one or more maximum likelihood sequence estimation equalizers.
摘要翻译：调制器产生包括载波的调制信号和表示数据位的数据信号。数据信号包括具有不同形状并且在时间和频率上干扰的至少两个同相调制脉冲; 数据信号还包括具有不同形状并且在时间和频率上干扰的至少两个正交调制脉冲。调制器包括用于产生每种脉冲形状的滤波器，以及用于组合脉冲彼此并与载体组合的电路。解调器（或接收器）接收组合信号并将脉冲与载波分离。解调器还包括用于分离脉冲的滤波器，以及用于处理脉冲以再现数据位的电路。处理电路优选地包括一个或多个最大似然序列估计均衡器。

5. 发明授权

US07925963B2 Sets of rate-compatible universal turbo codes nearly optimized over various rates and interleaver sizes 有权
标题翻译：速率兼容的通用turbo码的集合在各种速率和交织器大小上几乎被优化
公开(公告)号：US07925963B2
公开(公告)日：2011-04-12
申请号：US12435237
申请日：2009-05-04
申请人： Mustafa Eroz , A. Roger Hammons, Jr.
发明人： Mustafa Eroz , A. Roger Hammons, Jr.
IPC分类号： H03M13/27
CPC分类号： H03M13/2957 , H03M13/258 , H03M13/6312 , H03M13/6381 , H04L1/005 , H04L1/0066 , H04L1/0069
摘要： A method and apparatus for Turbo encoding uses a set of rate-compatible Turbo Codes optimized at high code rates and derived from a universal constituent code. The Turbo Codes have rate-compatible puncturing patterns.The method comprises: encoding a signal at a first and second encoder using a best rate 1/2 constituent code universal with higher code rates, the first encoder and the second encoder each producing a respective plurality of parity bits for each information bit; puncturing the respective plurality of parity bits at each encoder with a higher rate best puncturing patterns; and puncturing the respective plurality of parity bits at each encoder with a lower rate best puncturing pattern. In a variation, the best rate 1/2 constituent code represents a concatenation of polynomials 1+D2+D3 (octal 13) and 1+D+D3 (octal 15), D a data bit. A Turbo Encoder is provided which has hardware to implement the method.
摘要翻译：用于Turbo编码的方法和装置使用一组以高码率优化并由通用组成码导出的速率兼容Turbo码。 Turbo码具有速率兼容的穿孔模式。该方法包括：使用具有较高码率的通用最佳速率1/2构成码在第一和第二编码器处对信号进行编码，第一编码器和第二编码器为每个信息比特产生相应的多个奇偶校验位; 在每个编码器处以更高速率的最佳穿孔模式对相应的多个奇偶校验位进行穿孔; 以及在每个编码器处以较低速率的最佳打孔图案对相应的多个奇偶校验位进行穿孔。在一个变型中，最佳速率1/2分量代码表示多项式1 + D2 + D3（八进制13）和1 + D + D3（八进制15），D是数据比特的级联。提供了一种具有执行该方法的硬件的Turbo编码器。

6. 发明授权

US07840871B2 Forward error correction scheme for data channels using universal turbo codes 有权
公开(公告)号：US07840871B2
公开(公告)日：2010-11-23
申请号：US12410384
申请日：2009-03-24
申请人： Mustafa Eroz , A. Roger Hammons, Jr.
发明人： Mustafa Eroz , A. Roger Hammons, Jr.
IPC分类号： H03M13/00
CPC分类号： H03M13/2957 , H03M13/036 , H03M13/2789 , H03M13/2903 , H03M13/6362 , H03M13/6381 , H04L1/0066 , H04L1/0069
摘要： A method of providing forward error correction for data services uses a parallel concatenated convolutional code which is a Turbo Code comprising a plurality of eight-state constituent encoders wherein a plurality of data block sizes are used in conjunction with said Turbo Code. A variation uses the method in a cellular radio system. Another variation uses the method in both forward and reverse likes of a cellular radio system.

7. 发明授权

US07483476B2 Method and system for utilizing space-time and space-frequency codes for multi-input multi-output frequency selective fading channels 有权
标题翻译：用于多输入多输出频率选择性衰落信道的空时和空频码的方法和系统
公开(公告)号：US07483476B2
公开(公告)日：2009-01-27
申请号：US11983590
申请日：2007-11-09
申请人： Hesham El-Gamal , A. Roger Hammons, Jr.
发明人： Hesham El-Gamal , A. Roger Hammons, Jr.
IPC分类号： H04L27/30
CPC分类号： H04B7/0669 , H04L1/04 , H04L1/0606 , H04L1/0618 , H04L1/0631 , H04L1/065
摘要： A communication system for transmitting encoded signals over a communication channel is disclosed. The system includes a transmitter, which has a source that outputs a message signal. The transmitter also includes an encoder that generates a code word in response to the message signal. The code word has a construction that defines a plurality of paths associated with an intersymbol interference (ISI) environment of the communication channel, wherein the code word achieves a diversity based upon the number of transmit antennas and the number of ISI paths. Further, the transmitter includes a modulator that modulates the code word for transmission over the communication channel, and multiple antennas that transmit the modulated code word over the communication channel. The system encompasses a receiver that receives the transmitted code word via a number of receive antennas.
摘要翻译：公开了一种用于通过通信信道发送编码信号的通信系统。该系统包括发射机，其具有输出消息信号的源。发射机还包括响应于消息信号产生码字的编码器。代码字具有定义与通信信道的符号间干扰（ISI）环境相关联的多个路径的结构，其中码字基于发射天线的数量和ISI路径的数量实现分集。此外，发射机包括调制器，用于调制通过通信信道传输的码字，以及通过通信信道发送调制码字的多个天线。该系统包括接收经由多个接收天线发送的码字的接收机。

8. 发明授权

US07346827B2 Forward error correction scheme for data channels using universal turbo codes 有权
公开(公告)号：US07346827B2
公开(公告)日：2008-03-18
申请号：US11029734
申请日：2005-01-05
申请人： Mustafa Eroz , A. Roger Hammons, Jr.
发明人： Mustafa Eroz , A. Roger Hammons, Jr.
IPC分类号： H03M13/00
CPC分类号： H03M13/2957 , H03M13/036 , H03M13/2789 , H03M13/2903 , H03M13/6362 , H03M13/6381 , H04L1/0066 , H04L1/0069
摘要： A method of providing forward error correction for data services uses a parallel concatenated convolutional code which is a Turbo Code comprising a plurality of eight-state constituent encoders wherein a plurality of data block sizes are used in conjunction with said Turbo Code. A variation uses the method in a cellular radio system. Another variation uses the method in both forward and reverse likes of a cellular radio system.

9. 发明授权

US07342875B2 Space-time coded OFDM system for MMDS applications 有权
标题翻译：用于MMDS应用的时空编码OFDM系统
公开(公告)号：US07342875B2
公开(公告)日：2008-03-11
申请号：US10012066
申请日：2001-11-05
申请人： A. Roger Hammons, Jr. , Hesham El-Gamal , Lin-Nan Lee , Stan Kay , Andrew MacDonald , Jack Rozmaryn , Bassel Beidas
发明人： A. Roger Hammons, Jr. , Hesham El-Gamal , Lin-Nan Lee , Stan Kay , Andrew MacDonald , Jack Rozmaryn , Bassel Beidas
IPC分类号： G01R31/08
CPC分类号： H04L27/2602 , H04L1/0618
摘要： A communications system includes a base station that is configured to transmit a signal that is modulated according to a predetermined modulation scheme and an orthogonal frequency division multiplexing scheme, wherein the signal is encoded using space-frequency coding. The base station includes a plurality of multiple-input multiple-output (MIMO) transceivers. The system includes a terminal that is configured to receive the modulated signal. The above arrangement is particularly applicable to providing multichannel multipoint distribution services (MMDS) over a radio communications system.
摘要翻译：通信系统包括：基站，被配置为发送根据预定调制方案和正交频分复用方案调制的信号，其中，使用空频编码来对信号进行编码。基站包括多个多输入多输出（MIMO）收发器。该系统包括被配置为接收调制信号的终端。上述布置特别适用于通过无线电通信系统提供多信道多点分发业务（MMDS）。

10. 发明授权

US06697990B2 Interleaver design for parsed parallel concatenated codes 有权
标题翻译：用于解析并行级联代码的交织器设计
公开(公告)号：US06697990B2
公开(公告)日：2004-02-24
申请号：US09734841
申请日：2000-12-13
申请人： Hesham El-Gamal , A. Roger Hammons, Jr. , Mustafa Eroz
发明人： Hesham El-Gamal , A. Roger Hammons, Jr. , Mustafa Eroz
IPC分类号： H03M1300
CPC分类号： H04L1/0041 , H03M13/2746 , H03M13/2771 , H03M13/296 , H03M13/2987 , H03M13/6362 , H04L1/0066 , H04L1/0068 , H04L1/0071
摘要： A method and apparatus for interleaving an input data stream for parsed parallel concatenated code encoding, the method comprising the steps of: parsing the input data stream into a plurality of parsed data substreams; and forming sets of shared information bits, wherein each of the sets of shared information bits comprises information bits in common with respective pairs of the plurality of parsed data substreams. In a variation, a further step comprises constructing constituent permutations of one or more of the sets of shared information bits. In yet a further variation, a further step comprises interlacing respective pairs of the sets of shared information bits to form respective interleaved data substreams.
摘要翻译：一种用于交织用于解析的并行级联码编码的输入数据流的方法和装置，所述方法包括以下步骤：将所述输入数据流解析成多个解析数据子流; 以及形成共享信息比特组，其中所述共享信息比特组中的每一个包含与所述多个解析数据子流中的相应对共同的信息比特。在一个变型中，另一步骤包括构成一组或多组共享信息比特的组成置换。在又一变型中，另一步骤包括交织各组共享信息比特组以形成相应的交错数据子流。

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