公开(公告)号：US08194776B2

公开(公告)日：2012-06-05

申请号：US12704111

申请日：2010-02-11

Applicant: Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

Inventor： Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

IPC: H04B7/02

CPC classification number: H04L5/023

Abstract: Transmitter and receiver units for use in an OFDM communications system and configurable to support multiple types of services. The transmitter unit includes one or more encoders, a symbol mapping element, and a modulator. Each encoder receives and codes a respective channel data stream to generate a corresponding coded data stream. The symbol mapping element receives and maps data from the coded data streams to generate modulation symbol vectors, with each modulation symbol vector including a set of data values used to modulate a set of tones to generate an OFDM symbol. The modulator modulates the modulation symbol vectors to provide a modulated signal suitable for transmission. The data from each coded data stream is mapped to a respective set of one or more “circuits”. Each circuit can be defined to include a number of tones from a number of OFDM symbols, a number of tones from a single OFDM symbol, all tones from one or more OFDM symbols, or some other combination of tones. The circuits can have equal size or different sizes. Different circuits can be used for full rate data (e.g., active speech) and low rate data (e.g., silence periods).

Abstract translation: 发射机和接收机单元，用于OFDM通信系统并可配置为支持多种类型的业务。 发射机单元包括一个或多个编码器，符号映射元件和调制器。 每个编码器接收和编码相应的信道数据流以生成对应的编码数据流。 符号映射元件接收并映射来自编码数据流的数据以产生调制符号向量，其中每个调制符号向量包括用于调制一组音调以生成OFDM符号的一组数据值。 调制器调制调制符号向量以提供适于传输的调制信号。 来自每个编码数据流的数据被映射到一个或多个“电路”的相应集合。 每个电路可以被定义为包括来自多个OFDM符号的多个音调，来自单个OFDM符号的多个音调，来自一个或多个OFDM符号的所有音调，或一些其它音调组合。 电路可以具有相同的尺寸或不同的尺寸。 不同的电路可以用于全速率数据（例如，活动语音）和低速率数据（例如，静默时段）。

公开(公告)号：US20100254353A1

公开(公告)日：2010-10-07

申请号：US12817883

申请日：2010-06-17

Applicant: Ahmad Jalali

Inventor： Ahmad Jalali

IPC: H04W4/00

CPC classification number: H04B7/18504

Abstract: Aeronautical broadband communication is enhanced by providing an apparatus having a first antenna configured to communicate using a signal orientation corresponding to a first polarization, and a second antenna configured to communicate using a signal orientation corresponding to a second polarization, where the second polarization has at least one characteristic difference from the first polarization. Additional antennas may be used, where multiple antennas share one polarization, and multiple other antennas share a different polarization, and signals from like-polarized antennas are combined for beam-formation.

Abstract translation: 通过提供具有第一天线的装置来增强航空宽带通信，所述第一天线被配置为使用与第一极化相对应的信号方向进行通信，以及第二天线，被配置为使用与第二极化对应的信号取向进行通信，其中第二极化具有至少 与第一极化有一个特征差异。 可以使用附加的天线，其中多个天线共享一个极化，并且多个其它天线共享不同的极化，并且组合来自相同极化天线的信号用于波束形成。

公开(公告)号：US07729444B2

公开(公告)日：2010-06-01

申请号：US11963016

申请日：2007-12-21

Applicant: Ahmad Jalali ,  John Edward Smee ,  Mark S. Wallace

Inventor： Ahmad Jalali ,  John Edward Smee ,  Mark S. Wallace

IPC: H04K1/02

CPC classification number: H04L1/0032 ,  H04B7/0434 ,  H04B7/0626 ,  H04L1/0003 ,  H04L1/0013 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/06 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/0226 ,  H04L25/03343 ,  H04L27/2647 ,  H04L2025/03414 ,  H04L2025/03426

Abstract: Techniques to process data for transmission in a time division duplexed (TDD) communication system. In one aspect, the frequency response of a forward link is estimated at a base station based on reverse link transmissions (e.g., pilots) from a terminal. Prior to a data transmission on the forward link, the base station determines a reverse transfer function based on the pilots transmitted by the terminal, “calibrates” the reverse transfer function with a calibration function to derive an estimate of a forward transfer function, and preconditions modulation symbols based on weights derived from the forward transfer function. In another aspect, the terminal estimates the “quality” of the forward link and provides this information to the base station. The base station then uses the information to properly code and modulate data prior to transmission such that the transmitted data can be received by the terminal at the desired level of performance.

Abstract translation: 在时分双工（TDD）通信系统中处理用于传输的数据的技术。 在一个方面，基于来自终端的反向链路传输（例如，导频）在基站处估计前向链路的频率响应。 在前向链路上的数据传输之前，基站基于终端发送的导频来确定反向传递函数，使用校准功能“校准”反向传递函数，以导出前向传递函数的估计，以及前提条件 基于从前向传递函数导出的权重的调制符号。 在另一方面，终端估计前向链路的“质量”，并将该信息提供给基站。 然后，基站使用该信息在发送之前对数据进行适当的编码和调制，使得所发送的数据能够以期望的性能水平由终端接收。

公开(公告)号：US07664193B2

公开(公告)日：2010-02-16

申请号：US11297244

申请日：2005-12-07

Applicant: Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

Inventor： Ahmad Jalali ,  Jay R. Walton ,  Mark Wallace

IPC: H04B7/02

CPC classification number: H04L5/023

Abstract: For certain embodiments of the present disclosure, a method and apparatus for generating pilots in a wireless multiple-input multiple output (MIMO) communication system is provided. The method comprises obtaining at least one pilot symbol for each antenna of a plurality of antennas, obtaining an orthogonal sequence for each antenna in the plurality of antennas, and covering the at least one pilot symbol for each antenna with the orthogonal sequence to obtain a sequence of covered pilot symbols for each antenna to obtain at least one covered pilot symbols for each of the plurality of antennas.

Abstract translation: 对于本公开的某些实施例，提供了一种用于在无线多输入多输出（MIMO）通信系统中生成导频的方法和装置。 该方法包括获得多个天线中的每个天线的至少一个导频符号，为多个天线中的每个天线获得正交序列，并用正交序列覆盖每个天线的至少一个导频符号，以获得序列 的每个天线的覆盖的导频符号，以获得用于多个天线中的每一个的至少一个被覆盖的导频符号。

公开(公告)号：US07487362B2

公开(公告)日：2009-02-03

申请号：US10785313

申请日：2004-02-23

Applicant: Jack Steenstra ,  Alexander Gantman ,  John W. Noerenberg, II ,  Ahmad Jalali ,  Gregory G. Rose

Inventor： Jack Steenstra ,  Alexander Gantman ,  John W. Noerenberg, II ,  Ahmad Jalali ,  Gregory G. Rose

IPC: H04L9/00

CPC classification number: G06Q20/341 ,  G06Q20/346 ,  G06Q20/4014 ,  G06Q20/40975 ,  G07F7/1008 ,  G07F7/1016 ,  G07F7/1025 ,  H04L9/3228 ,  H04L9/3297

Abstract: Apparatus and method are disclosed for digital authentication and verification. In one embodiment, authentication involves storing a cryptographic key and a look up table (LUT), generating an access code using the cryptographic key; generating multiple parallel BPSK symbols based upon the access code; converting the BPSK symbols into multiple tones encoded with the access code using the LUT; and outputting the multiple tones encoded with the access code for authentication. In another embodiment, verification involves receiving multiple tones encoded with an access code; generating multiple parallel BPSK symbols from the multiple tones; converting the BPSK symbols into an encoded interleaved bit stream of the access code; de-interleaving the encoded interleaved bit stream; and recovering the access code from the encoded de-interleaved bit stream.

Abstract translation: 公开了用于数字认证和验证的装置和方法。 在一个实施例中，认证涉及存储加密密钥和查找表（LUT），使用密码密钥生成访问代码; 基于所述访问码生成多个并行BPSK符号; 使用LUT将BPSK符号转换为用访问码编码的多个音调; 并输出用访问码编码的多个音调进行认证。 在另一个实施例中，验证涉及接收用访问码编码的多个音调; 从多个音调生成多个并行BPSK符号; 将所述BPSK符号转换为所述接入码的编码交织比特流; 对编码的交错比特流进行解交织; 以及从编码的解交织比特流中恢复接入码。

公开(公告)号：US20080186230A1

公开(公告)日：2008-08-07

申请号：US12098323

申请日：2008-04-04

Applicant: Michael James Wengler ,  Ahmad Jalali

Inventor： Michael James Wengler ,  Ahmad Jalali

IPC: G01S3/16 ,  G01S13/90

CPC classification number: G01S19/21 ,  G01S5/0215 ,  G01S19/36 ,  G01S2013/466 ,  H04B7/0854

Abstract: A method for detecting a plurality of navigation beacon signals by using either two antennas or a synthetic aperture antenna for receiving a plurality of distinct measurements, and combining the plurality of distinct measurements using a plurality of antenna weight components to form an interference cancellation beam. In one embodiment, the plurality of antenna weight components is determined by eigenvalue processing. In another embodiment, the plurality of antenna weight components is determined by simplified processing. In another aspect, a single antenna is used for receiving an originally received measurement. A copy of the originally received measurement is made and processed to achieve the proper time delay to emulate spatial diversity. The originally received measurement and the processed copy are combined to form an interference cancellation beam.

Abstract translation: 一种用于通过使用两个天线或合成孔径天线来接收多个不同测量来检测多个导航信标信号的方法，以及使用多个天线权重分量组合所述多个不同测量以形成干扰消除波束。 在一个实施例中，多个天线权重分量由特征值处理确定。 在另一个实施例中，通过简化的处理来确定多个天线权重分量。 在另一方面，单个天线用于接收原始接收的测量。 进行原始接收的测量的副本并进行处理以实现适当的时间延迟来模拟空间分集。 原始接收的测量和处理的拷贝被组合以形成干扰消除波束。

公开(公告)号：US20080115007A1

公开(公告)日：2008-05-15

申请号：US11937746

申请日：2007-11-09

Applicant: Ahmad Jalali

Inventor： Ahmad Jalali

IPC: G06F11/00

CPC classification number: H04L5/0007 ,  H04B7/18508 ,  H04B7/18536 ,  H04B7/2628 ,  H04B2201/709709 ,  H04H40/90 ,  H04L1/0045 ,  H04L1/007 ,  H04L1/0086 ,  H04L1/08 ,  H04L65/601 ,  H04L2001/0097 ,  H04N21/2343 ,  H04N21/2383 ,  H04N21/2662 ,  H04N21/6143 ,  H04N21/631

Abstract: An original data stream is encoded into a high priority data stream and a low priority data stream. The high priority data stream is encoded so as to permit decoding of the high priority data steam independently of the low priority data stream. The high priority data stream is transmitted twice, while the low priority data claim 25. is transmitted in two portions, but only once. If both the first portion and the second portion of the low priority data stream are received, and at least one complete transmission of the high priority data stream is received, then the two data streams are combined to produce a signal output of high quality. However, if any portions of the low priority data stream is lost then the low priority data stream is not used, and only the high priority data stream is used to produce output. Overall throughput is greater than would be achieved if the original data stream were transmitted with complete redundancy.

Abstract translation: 原始数据流被编码为高优先级数据流和低优先级数据流。 对高优先级数据流进行编码，以便能够独立于低优先级数据流解码高优先级数据流。 高优先级数据流被发送两次，而低优先权数据要求25。 传输两部分，但只有一次。 如果接收到低优先级数据流的第一部分和第二部分，并且接收到高优先级数据流的至少一个完整传输，则两个数据流被组合以产生高质量的信号输出。 然而，如果低优先级数据流的任何部分丢失，则不使用低优先级数据流，并且仅使用高优先级数据流来产生输出。 如果原始数据流以完全冗余传输，则总吞吐量大于实现的吞吐量。

公开(公告)号：US20080025312A1

公开(公告)日：2008-01-31

申请号：US11829871

申请日：2007-07-27

Applicant: Kalyan Kuppuswamy ,  June Namgoong ,  Srikant Jayaraman ,  Ahmad Jalali ,  Rohit Kapoor

Inventor： Kalyan Kuppuswamy ,  June Namgoong ,  Srikant Jayaraman ,  Ahmad Jalali ,  Rohit Kapoor

IPC: H04L12/56

CPC classification number: H04W28/06 ,  H04L69/04 ,  H04L69/22 ,  H04W84/06

Abstract: A communication system is disclosed in which a mobile terminal having limited power is able to communicate with a land-based network via a low-rate satellite communication link. To achieve VoIP communications via a low-rate link, link-layer assisted zero-header header compression techniques are employed to reduce VoIP packet overheads. Additionally, overheads introduced by link layer protocol layers are eliminated or reduced. A transmitting device strips RTP/UDP/IP header information from a stream of VoIP packets. The transmitting device then sends an initial context message providing the RTP/UDP/IP header information. The stripped zero-header VoIP packets are then transmitted via a satellite relay. A receiving device uses the initial context information to reconstruct the headers for the zero-header VoIP packets.

Abstract translation: 公开了一种通信系统，其中具有有限功率的移动终端能够经由低速率卫星通信链路与陆基网络进行通信。 为了通过低速率链路实现VoIP通信，采用链路层辅助的零标题报头压缩技术来减少VoIP分组开销。 此外，消除或减少了由链路层协议层引入的开销。 发送设备从VoIP数据包流中剥离RTP / UDP / IP头信息。 然后，发送设备发送提供RTP / UDP / IP报头信息的初始上​​下文消息。 然后通过卫星中继传输剥离的零标题VoIP数据包。 接收设备使用初始上下文信息来重构零标题VoIP分组的报头。

公开(公告)号：US20070178927A1

公开(公告)日：2007-08-02

申请号：US11441651

申请日：2006-05-25

Applicant: Ivan Fernandez-Corbaton ,  Ahmad Jalali ,  Jordi Pinos Pont

Inventor： Ivan Fernandez-Corbaton ,  Ahmad Jalali ,  Jordi Pinos Pont

IPC: H04B7/00 ,  H04Q7/20

CPC classification number: H04W52/343 ,  H04W52/367

Abstract: A novel MAC algorithm is disclosed having various features for a modern CDMA interference-shared reverse link, including (a) link quality assurance, (b) individual congestion control, (c) variable data rate transition policy, and/or (d) reverse link partitioning. Link quality assurance is provided by monitoring transmission feedback information (ACK/NACK) to indirectly determine the quality of a communication link. Wireless devices are individually targeted to perform congestion control of the reverse link. Variable data transmission rates and discontinuous transmissions are achieved by individual wireless devices that autonomously adjust their transmission rate and transmit power. The reverse link can also be partitioned among the different wireless devices by individually controlling the transmit power of the wireless devices operating on the reverse link.

Abstract translation: 公开了一种新颖的MAC算法，其具有用于现代CDMA干扰共享反向链路的各种特征，包括（a）链路质量保证，（b）个体拥塞控制，（c）可变数据速率转换策略和/或（d）反向 链接分区。 通过监视传输反馈信息（ACK / NACK）来间接地确定通信链路的质量来提供链路质量保证。 无线设备被单独定向以执行反向链路的拥塞控制。 可变数据传输速率和不连续传输通过自主调整其传输速率和传输功率的各个无线设备实现。 也可以通过单独控制在反向链路上操作的无线设备的发射功率，在不同的无线设备之间对反向链路进行分区。

公开(公告)号：US20070083803A1

公开(公告)日：2007-04-12

申请号：US11249293

申请日：2005-10-12

Applicant: Pei Chen ,  Ahmad Jalali

Inventor： Pei Chen ,  Ahmad Jalali

IPC: H03M13/00

CPC classification number: H03M13/2789 ,  H03M13/271 ,  H03M13/276 ,  H03M13/2771 ,  H03M13/2957

Abstract: At least one aspect of the invention provides a turbo encoder having parallel first and second constituent encoders and an interleaver coupled as an input to the second constituent encoder to provide a permutated version of the binary data input to the first constituent encoder to achieve a low frame error rate. The interleaver is configured to parse the binary data input into an input block, determine a permutation vector, and rearrange the order of the binary data in the input block according to a set of predetermined permutation equations. The rearranged binary data in the information block is then passed to the second constituent encoder to improve the distance spectrum of the transmitted redundant data.

Abstract translation: 本发明的至少一个方面提供了一种具有并行的第一和第二组成编码器的turbo编码器和作为第二组成编码器的输入的交织器，以提供输入到第一组成编码器的二进制数据的置换版本以实现低帧 错误率。 交织器被配置为将输入的二进制数据解析成输入块，确定置换向量，并且根据一组预定的置换方程重新排列输入块中的二进制数据的顺序。 然后将信息块中的重新排列的二进制数据传递给第二组成编码器，以改进发送的冗余数据的距离谱。