公开(公告)号：US06836515B1

公开(公告)日：2004-12-28

申请号：US09360209

申请日：1999-07-23

申请人： Stanley E. Kay ,  John E. Corrigan, III ,  Bala Subramaniam ,  Harry M. Johnson ,  Donald S. Arnstein

发明人： Stanley E. Kay ,  John E. Corrigan, III ,  Bala Subramaniam ,  Harry M. Johnson ,  Donald S. Arnstein

IPC分类号： H04L2700

CPC分类号： H04L27/0008 ,  H04B1/406 ,  H04B7/2656 ,  H04J2203/0035 ,  H04J2203/0089 ,  H04L12/5601 ,  H04L12/6418 ,  H04L49/455 ,  H04L49/90 ,  H04L49/9094 ,  H04L2012/5607 ,  H04L2012/5613 ,  H04L2012/5654 ,  H04L2012/5663 ,  H04L2012/5665 ,  H04L2012/5672 ,  H04L2012/5675 ,  H04Q11/0478 ,  H04W88/02

摘要： A radio, and related methods of radio communication, consisting of a multi-modulation modem, wherein the multi-modulation modem that modulates and demodulates signals using a plurality of modulations. The radio also comprises a frequency converter coupled to the multi-modulation modem for converting the signals to a radio frequency and a transceiver unit including an antenna coupled to the frequency converter for transmitting the signals over a radio communications link. The multi-modulation modem includes a modulator that includes a modulation selector unit that selects respective ones of the plurality of modulations to modulate the signals. The multi-modulation modem also includes a demodulator for demodulating the signals having been modulated using the plurality of modulations.

摘要翻译： 一种由多调制调制解调器组成的无线电通信的无线电和相关方法，其中所述多调制调制解调器使用多个调制来调制和解调信号。 无线电还包括耦合到多调制调制解调器的频率转换器，用于将信号转换成无线电频率，收发机单元包括耦合到频率转换器的天线，用于通过无线电通信链路传输信号。 多调制调制解调器包括调制器，其包括调制选择器单元，其选择多个调制中的相应调制来调制信号。 多调制调制解调器还包括用于解调已经使用多个调制调制的信号的解调器。

公开(公告)号：US06826234B1

公开(公告)日：2004-11-30

申请号：US09636508

申请日：2000-08-10

申请人： Yozo Shoji ,  Kiyoshi Hamaguchi ,  Hiroyo Ogawa

发明人： Yozo Shoji ,  Kiyoshi Hamaguchi ,  Hiroyo Ogawa

IPC分类号： H04L2700

CPC分类号： H04B1/24 ,  H04L27/0014 ,  H04L2027/0091

摘要： In a radio communication apparatus and method, on the transmitting side, an input signal is modulated in an intermediate frequency band to produce a modulated intermediate frequency band signal, a local oscillation signal is used to up-convert the modulated intermediate frequency band signal to a modulated radio frequency band signal, and the local oscillation signal and the modulated radio frequency band signal are simultaneously transmitted as a radio signal, and, on the receiving side, the radio signal from the transmitter is received, the received signal is down-converted by multiplying the local oscillation signal component and the modulated radio frequency band signal component contained in the received signal to generate a multiplication component and thereby produce a modulated intermediate frequency band signal, and the modulated intermediate frequency band signal is demodulated.

摘要翻译： 在无线电通信装置和方法中，在发送侧，在中频频带中调制输入信号以产生调制的中频带信号，本地振荡信号用于将调制的中频带信号上变频到 调制后的无线电频带信号，本地振荡信号和调制后的无线电频带信号作为无线信号同时发送，在接收侧接收到来自发送机的无线信号，接收到的信号由 将本地振荡信号分量和包含在接收信号中的调制无线电频带信号分量相乘以产生乘法分量，从而产生调制的中频带信号，并调制中频带信号。

公开(公告)号：US06823003B2

公开(公告)日：2004-11-23

申请号：US09760858

申请日：2001-01-15

申请人： Steven J. Laureanti

发明人： Steven J. Laureanti

IPC分类号： H04L2700

CPC分类号： H04B1/48 ,  H04B1/0483

摘要： A multi-path transceiver apparatus, method and system for implementation in a bidirectional antenna path by which a transceiver output signal is provided with a path independent from a separate signal path provided for incoming signals. The invention facilitates the amplification of transmitted signals without damaging the received signals and avoids modification to transceiver and bidirectional antenna hardware.

摘要翻译： 一种用于在双向天线路径中实现的多路径收发器设备，方法和系统，通过该多路径收发器设备，收发器输出信号具有独立于为输入信号提供的单独信号路径的路径。 本发明有利于传输信号的放大，而不损坏接收到的信号，并且避免对收发信机和双向天线硬件的修改。

公开(公告)号：US06674806B1

公开(公告)日：2004-01-06

申请号：US09666004

申请日：2000-09-19

申请人： Kohji Toda

发明人： Kohji Toda

IPC分类号： H04L2700

CPC分类号： H04B3/54 ,  H04B2203/5412 ,  H04B2203/5483

摘要： A transmitting and receiving system for digital communication on electric power-lines comprises a transmitting device and a receiving device. The transmitting device consists of an input terminal, a bipolar-pulse generator, a first piezoelectric substrate, first- and second coded IDTs, a first intermediary IDT, an electrode group, a synchronizing device, an envelope detecting device, a monopolar-pulse generator, and a mixer connected with electric power-lines. The receiving device consists of a receiving connector connected with the electric power-lines, a tuning coil, a second piezoelectric substrate, a second intermediary IDT, third- and fourth coded IDTs, a detecting device, and a detecting terminal. If a message digital-signal is applied to the bipolar-pulse generator via the input terminal, high-frequency bipolar-pulses (−1 and 1) are generated, and after all, are transduced to first- and second coded digital-signals at the monopolar-pulse generator. The first- and second coded digital-signals are delivered into the electric power-lines via the mixer. On the other hand, if the first coded digital-signal is received at the receiving connector, the first coded digital-signal is applied to the second intermediary IDT via the tuning coil. The first coded digital-signal is, after all, transduced to a first decoded pulse at the third coded IDT. In the same way, the second coded digital-signal is transduced to a second decoded pulse at the fourth coded IDT. As a result, an output digital-signal, which is composed of the first- and second decoded pulses and is equivalent to the message digital-signal, is detected at the detecting terminal via the detecting device.

摘要翻译： 用于电力线上的数字通信的发送和接收系统包括发送设备和接收设备。 发送装置由输入端子，双极脉冲发生器，第一压电基板，第一和第二编码IDT，第一中间IDT，电极组，同步装置，包络检测装置，单极脉冲发生器 和与电力线连接的混频器。 接收装置包括与电力线连接的接收连接器，调谐线圈，第二压电基板，第二中间IDT，第三和第四编码IDT，检测装置和检测端子。 如果通过输入端将信号数字信号施加到双极型脉冲发生器，则产生高频双极性脉冲（-1和1），并且毕竟将其转换为第一和第二编码数字信号 单极脉冲发生器。 第一和第二编码数字信号通过混频器传送到电力线。 另一方面，如果在接收连接器处接收到第一编码数字信号，则经由调谐线圈将第一编码数字信号施加到第二中间IDT。 毕竟，第一编码数字信号在第三编码IDT被转换成第一解码脉冲。 以相同的方式，第二编码数字信号在第四编码IDT被转换为第二解码脉冲。 结果，在检测端子处经由检测装置检测由第一和第二解码脉冲组成并且等效于消息数字信号的输出数字信号。

公开(公告)号：US06650653B1

公开(公告)日：2003-11-18

申请号：US09487095

申请日：2000-01-19

申请人： Jyhchau Horng ,  Jay Bao

发明人： Jyhchau Horng ,  Jay Bao

IPC分类号： H04L2700

CPC分类号： H04B1/0003 ,  H04B1/406 ,  H04B1/707 ,  H04B7/0845 ,  H04B7/2612 ,  H04L25/0228 ,  H04L27/0008

摘要： In a digital radio receiver, transmitted symbols are recovered from a received signal that includes tim-shifted and frequency-shifted copies of a transmitted signal. A channel estimator extracts channel characteristics from a training signal. Receiver data and software for executing in a processor are stored in a memory connected to the processor. A parameter controller generates receiver configuration parameters from the channel characteristics and the receiver data. The received signal is decomposed into a matrix of samples according to the receiver configuration parameters to adapt the receiver to a multiple multiplexing schemes. An inner product is formed of the samples and channel characteristics, and the transmitted symbols are recovered from the inner product.

摘要翻译： 在数字无线电接收机中，从包括发送信号的定时偏移和频移副本的接收信号中恢复发送符号。 信道估计器从训练信号中提取信道特性。 用于在处理器中执行的接收器数据和软件存储在连接到处理器的存储器中。 参数控制器从通道特性和接收器数据生成接收器配置参数。 根据接收机配置参数将接收到的信号分解成采样矩阵，以使接收机适应多重复用方案。 内部产品由样品和通道特性形成，并且从内部产物中回收传输的符号。

公开(公告)号：US06631166B1

公开(公告)日：2003-10-07

申请号：US09455167

申请日：1999-12-06

申请人： Thomas L. Carroll

发明人： Thomas L. Carroll

IPC分类号： H04L2700

CPC分类号： H04L27/001 ,  H04B1/69

摘要： A signal generator and signal receiver, as well as method of signal generation and transmission, in which selected unstable periodic orbits of a lossy chaotic system are identified and extracted, and portions of the orbits concatenated together to form a resultant signal. The selected orbits are known to the signal detector a priori. The signal detector detects the transmitted signal by correlation of the received signal with the known extracted orbits, also allowing the detector identify information which the generator imposed onto the signal.

摘要翻译： 一种信号发生器和信号接收机，以及信号产生和传输方法，其中识别和提取有损混沌系统的选定的不稳定周期轨道，并将轨道的部分级联在一起以形成合成信号。 所选择的轨道是先验信号检测器已知的。 信号检测器通过将接收到的信号与已知的提取的轨道相关来检测发射信号，也允许检测器识别发生器施加到信号上的信息。

公开(公告)号：US06614849B1

公开(公告)日：2003-09-02

申请号：US09427020

申请日：1999-10-25

申请人： Chee Oei Chan ,  Beng Huat Chua ,  Chee Kong Siew ,  Kah Yong Lee

发明人： Chee Oei Chan ,  Beng Huat Chua ,  Chee Kong Siew ,  Kah Yong Lee

IPC分类号： H04L2700

CPC分类号： H04L1/0057 ,  H04J3/0632

摘要： A system for transmitting, receiving, recovering, and reproducing digitized samples of analog signals while concealing unrecoverable digitized samples of analog signals to maintain a level of fidelity in reproducing the analog signals. The digitized samples of the analog signals are burst transmitted such that the probability of interference with the transmission and thus corruption of the digitized samples of the analog signals is minimized. The digitized samples are received without synchronizing a receiving clock with a transmitting clock to capture the digitized samples of the analog signals. The digitized samples are converted from various sampling rates to digitized samples of the analog signals having a rate. Any large groups of digitized samples that are in error or corrupted in transmission are softly muted to avoid annoying clicks. Any long term difference between a transmit clock and a receive clock is tracked and the digitized samples are interpolated or decimated to eliminate any underrun or overrun of the digitized samples.

摘要翻译： 一种用于在隐藏模拟信号的不可恢复的数字化样本的同时传输，接收，恢复和再现模拟信号的数字样本的系统，以在再现模拟信号时保持保真度。 模拟信号的数字化样本是突发传输的，使得干扰传输的可能性以及因此模拟信号的数字化采样的损坏被最小化。 接收数字化样本，而不使接收时钟与发送时钟同步，以捕获模拟信号的数字化采样。 数字化样本从各种采样率转换为具有速率的模拟信号的数字化采样。 在传输中出现错误或损坏的任何大量数字化样本都会轻微静音，以避免烦人的点击。 跟踪发送时钟和接收时钟之间的任何长期差异，并对数字化样本进行内插或抽取，以消除数字化样本的任何欠载或超限。

公开(公告)号：US06522695B1

公开(公告)日：2003-02-18

申请号：US09270440

申请日：1999-03-16

申请人： Alphons A. M. L. Bruekers ,  Johannes M. M. Verbakel ,  Marcel S. E. Van Nieuwenhoven

发明人： Alphons A. M. L. Bruekers ,  Johannes M. M. Verbakel ,  Marcel S. E. Van Nieuwenhoven

IPC分类号： H04L2700

CPC分类号： H03M7/4006

摘要： A transmitter transmits a digital information signal via a transmission medium. The digital information signal can be divided into one or more sub-signals. Each sub-signal is transmitted as a non-encoded or as an encoded signal. Thus, the sub-signal is transmitted depending on the compression that can be achieved by the encoder. If the compression is low the sub-signal is transmitted in non-encoded form. For the receiver, an identification is added to the composite signal to be transmitted. A first component of the identification signal indicates if one or more sub-signals are transmitted in encoded form. A second component of the identification signal indicates for each sub-signal, whether it appears in encoded or non-encoded form in the composite signal. The invention provides a composite signal with a minimal number of bits.

摘要翻译： 发射机通过传输介质发送数字信息信号。 数字信息信号可以被分成一个或多个子信号。 每个子信号作为非编码信号或编码信号发送。 因此，根据可由编码器实现的压缩，发送子信号。 如果压缩较低，则以非编码形式发送子信号。 对于接收机，将要发送的复合信号添加识别。 识别信号的第一分量指示是否以编码形式发送一个或多个子信号。 识别信号的第二分量针对每个子信号指示其是否以复合信号中的编码或非编码形式出现。 本发明提供具有最少位数的复合信号。

公开(公告)号：US06487243B1

公开(公告)日：2002-11-26

申请号：US09264422

申请日：1999-03-08

申请人： Dongming Hwang ,  Malcolm Scott Ware ,  Hua Ye

发明人： Dongming Hwang ,  Malcolm Scott Ware ,  Hua Ye

IPC分类号： H04L2700

CPC分类号： H04L25/4927

摘要： Modems, methods, and computer program products for recovering from errors during a tone reversal sequence between a modem pair detect a false tone reversal during a tone reversal sequence at a first modem. If a false tone reversal is detected, then the first modem requests that a second modem restart the tone reversal sequence. Tone reversal sequences are used, for example, in the startup protocols of both the V.34 and V.90 standards to calculate the round trip delay between two modems. Neither standard provides for any recovery procedure, however, should the tone reversal sequence fail. The modems, methods, and computer program products can allow errors in a tone reversal sequence to be addressed immediately rather than proceeding to later phases in the communication protocol where the errors may ultimately cause the communication session to breakdown.

摘要翻译： 用于在调制解调器对之间的音调反转序列期间从错误中恢复的调制解调器，方法和计算机程序产品在第一调制解调器的音调反转序列期间检测到假音调反转。 如果检测到假音调反转，则第一调制解调器请求第二调制解调器重新启动音调反转序列。 使用音调反转序列，例如在V.34和V.90标准的启动协议中，以计算两个调制解调器之间的往返延迟。 两个标准都不提供任何恢复程序，但是，如果色调反转顺序失败。 调制解调器，方法和计算机程序产品可以允许立即解决音调反转序列中的错误，而不是进行到通信协议中的最后阶段，其中错误可能最终导致通信会话故障。

公开(公告)号：US06459740B1

公开(公告)日：2002-10-01

申请号：US09156066

申请日：1998-09-17

申请人： Titus Lo

发明人： Titus Lo

IPC分类号： H04L2700

CPC分类号： H04B7/0615 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0842 ,  H04B7/0857 ,  H04L1/06 ,  H04L25/0204 ,  H04L25/03343 ,  H04L2025/03426

摘要： An arrangement where a transmitter has a plurality of transmitting antennas that concurrently transmit the same symbol, and where the signal delivered to each transmitting antenna is weighted by a factor that is related to the channel transmission coefficients found between the transmitting antenna and receiving antennas. In the case of a plurality of transmit antennas and one receive antenna, where the channel coefficient between the receive antenna and a transmit antenna i is hi, the weighting factor is hi* divided by a normalizing factor, a, which is ( ∑ k = 1 K ⁢   ⁢ &LeftBracketingBar; h k &RightBracketingBar; 2 ) 1 / 2 , where K is the number of transmitting antennas. When more than one receiving antenna is employed, the weighting factor is {fraction (1/a)}(gH)H, where g=[g1 . . . gL], H is a matrix of channel coefficients, and a is a normalizing factor ( ∑ p = 1 L ⁢   ⁢ ∑ q = 1 L ⁢ &LeftBracketingBar;   ⁢ ∑ k = 1 K ⁢   ⁢ h p ⁢   ⁢ k ⁢ h q ⁢   ⁢ k * &RightBracketingBar; ) 1 / 2 .

摘要翻译： 发射机具有同时发送相同符号的多个发射天线以及传送到每个发射天线的信号被与发射天线和接收天线之间找到的信道发射系数相关的因子加权的布置。 在多个发射天线和一个接收天线的情况下，其中接收天线和发射天线i之间的信道系数是嗨，加权因子是hi *除以归一化因子，其中K是数字 的发射天线。 当使用多于一个的接收天线时，加权因子为{f​​raction（1 / a）}（gH）H，其中g = [g1。 。 。 gL]，H是信道系数的矩阵，a是归一化因子