公开(公告)号：US5295159A

公开(公告)日：1994-03-15

申请号：US870579

申请日：1992-04-17

Applicant: Kenneth J. Kerpez

Inventor： Kenneth J. Kerpez

IPC: H04L27/34 ,  H03H15/00 ,  H03H17/00 ,  H03H21/00 ,  H03M13/23 ,  H04B3/04 ,  H04B14/04 ,  H04J11/00 ,  H04L1/02 ,  H04L25/03 ,  H04L25/14 ,  H04K1/10 ,  H04B7/02 ,  H04L27/28

CPC classification number: H04L1/02 ,  H04L25/14

Abstract: Methodology, and associated circuitry, for encoding and decoding an incoming data stream utilize a coordinated code constellation that effects robust signal detection in the presence of channel interference. The encoder partitions the incoming data stream into contiguous data segments in proportion to the number of levels for a given coordinated code. Each data segment is mapped with reference to the coordinated code to signal levels suitable for transmission over a plurality of channels. The decoder measures the received signals on the channels and estimates noise statistics for the channels. A metric relationship engendered by the coordinated code is evaluated with reference to the received signals, estimates to the received signals, and the noise statistics. An output data stream is then generated based on the evaluation of the metric.

Abstract translation: 用于对输入数据流进行编码和解码的方法和相关电路利用在存在信道干扰的情况下实现鲁棒信号检测的协调码元星座。 编码器将输入的数据流与给定的协调代码的级别的数量成比例地分割成连续的数据段。 每个数据段被参照协调代码映射到适合于在多个通道上传输的信号电平。 解码器测量信道上的接收信号并估计信道的噪声统计。 参考接收到的信号，对接收到的信号的估计和噪声统计来评估协调代码产生的度量关系。 然后基于度量的评估生成输出数据流。

公开(公告)号：US5201071A

公开(公告)日：1993-04-06

申请号：US589305

申请日：1990-09-26

Applicant: Kenneth F. Webb

Inventor： Kenneth F. Webb

IPC: H04B1/68 ,  H04L1/02 ,  H04L5/06

CPC classification number: H04L1/02 ,  H04B1/68 ,  H04L5/06

Abstract: The average RF power output of an independent sideband diversity radio transmitter, modulated by a multiple tone data signal, is increased while the RF output peak envelope voltage is held constant. For diversity operation the same information, as a combination of the data tones, is applied to both the upper and lower sideband channels of the RF translator. Adding predetermined phase shifts between the upper and lower sideband audio tone pairs results in a reduced peak envelope voltage at the composite RF output. The final RF amplifier gain can then be increased resulting in a higher average RF power output.

Abstract translation: 由多音调数据信号调制的独立边带分集无线电发射机的平均RF功率输出增加，同时RF输出峰值包络电压保持恒定。 对于分集操作，作为数据音调的组合的相同信息被应用于RF转换器的上边带通道和下边带通道。 在上和下边带音频音调对之间增加预定的相移会导致复合RF输出端的降低的峰值包络电压。 然后可以增加最终的RF放大器增益，从而获得更高的平均RF功率输出。

公开(公告)号：US5155744A

公开(公告)日：1992-10-13

申请号：US468844

申请日：1990-01-22

Applicant: Otmar Ringelhaan

Inventor： Otmar Ringelhaan

IPC: H04L1/02

CPC classification number: H04L1/02

Abstract: A combiner for a radio receiving signal which receives signals having various signal paths of a digital radio transmitter, particularly a mobile transmitter. The combiner is designed so it allows maximum power gain in broadband systems and can also be used in systems which have pulse or discontinuous transmission. A correlator is provided at the receiver in every signal path. Frequency converters are also in each signal path. Following the frequency converter and following each of the correlators there is provided a metric table in each path which had been calculated in accordance with the respective line model obtained at the receiver. The output values formed from the metric tables and individual signals are combined and supplied to a Viterbi demodulator which produces the corrected output signal.

Abstract translation: 用于无线电接收信号的组合器，其接收具有数字无线电发射机，特别是移动发射机的各种信号路径的信号。 组合器的设计使其能够在宽带系统中实现最大功率增益，并且还可用于具有脉冲或不连续传输的系统。 在每个信号路径中的接收器处提供相关器。 变频器也在每个信号路径中。 在频率转换器之后并且跟随每个相关器，在每个路径中提供根据在接收机处获得的相应线路模型计算的度量表。 由度量表和各个信号形成的输出值被组合并提供给产生校正输出信号的维特比解调器。

公开(公告)号：US5056112A

公开(公告)日：1991-10-08

申请号：US457438

申请日：1989-12-27

Applicant: Lee-Fang Wei

Inventor： Lee-Fang Wei

IPC: H04L27/18 ,  H03M13/27 ,  H04B14/04 ,  H04L1/00 ,  H04L1/02

CPC classification number: H04L1/0071 ,  H04L1/0057 ,  H04L1/02 ,  H04L27/186

Abstract: Interleavers used in fading channel applications can be matched to a particular trellis or block code being used. This matching can occur even in a particular transmission scheme such as TDMA. Matching both the interleaver and the code increases the separation between interdependent signal points and provides an improvement in error performance, without an increase in time delay over known interleaver design.

Abstract translation: 在衰落信道应用中使用的交织器可以与正在使用的特定网格或块码匹配。 即使在诸如TDMA的特定传输方案中也可以发生匹配。 匹配交织器和代码增加了相互依赖的信号点之间的间隔，并提供了错误性能的改进，而不会在已知的交织器设计上增加时间延迟。

公开(公告)号：US4868851A

公开(公告)日：1989-09-19

申请号：US148707

申请日：1988-01-26

Applicant: John M. Trinidad ,  Hendrik J. Keesom ,  C. Wayne Buhrman ,  Dedina M. Heinrich

Inventor： John M. Trinidad ,  Hendrik J. Keesom ,  C. Wayne Buhrman ,  Dedina M. Heinrich

IPC: H04L1/02

CPC classification number: H04L1/02

Abstract: Apparatus and method for processing a common digital signal received at plural receivers in which each received signal is validated and aligned in time with the other signals. A single output signal is generated from the received signals using a voting scheme such as one in which the logic state of the majority of corresponding bits in the received signals determines the logic state of the bits in the generated signal. If there is no majority, the logic state of the best performing signal is used without revoting, or the vote is retaken without the poorest performing signal.

Abstract translation: 用于处理在多个接收机处接收的公共数字信号的装置和方法，其中每个接收信号在其他信号中被有效地对准并与其对准。 使用诸如其中接收信号中的大部分相应比特的逻辑状态确定所生成的信号中的比特的逻辑状态的表决方案，从接收到的信号生成单个输出信号。 如果没有多数，则使用最佳执行信号的逻辑状态，而无需重新启动，或者在没有最差执行信号的情况下重新投票。

公开(公告)号：US4852084A

公开(公告)日：1989-07-25

申请号：US144410

申请日：1988-01-15

Applicant: Willem J. A. Verbiest ,  Marc M. L. Duponcheel

Inventor： Willem J. A. Verbiest ,  Marc M. L. Duponcheel

IPC: H04L1/02 ,  H04N11/04 ,  H04N19/186 ,  H04N19/40 ,  H04N19/63

CPC classification number: H04L1/02 ,  H04N11/042 ,  H04N19/186 ,  H04N19/40 ,  H04N19/63

Abstract: Information signals (Y1, C1; Y2, C2: Y3, C3) relating to the same video image but each defining the image with a different accuracy are transmitted asynchronously and on a time division basis as packet sets (Y1, C1; Y21, C21; Y32, C32). In a receiving station (SS2) the information signals are derived from the received packet sets and by means of selection circuit (SEC1/3) two or more of these signals are supplied to a combination device (VTE) and are combined therein to form an image.

公开(公告)号：US4763103A

公开(公告)日：1988-08-09

申请号：US829055

申请日：1986-02-13

Applicant: William Galula ,  Timothy J. Ridgers

Inventor： William Galula ,  Timothy J. Ridgers

IPC: H04L27/26 ,  H02J13/00 ,  H04B3/54 ,  H04L1/02 ,  H04L27/10 ,  H04M11/04

CPC classification number: H02J13/0031 ,  H04B3/542 ,  H04L1/02 ,  H04B2203/5416 ,  H04B2203/542 ,  H04B2203/5433 ,  H04B2203/5491 ,  Y02E60/7892 ,  Y04S40/146

Abstract: At transmission (10) each bit for transmission is coded as a function of its state by producing (12) a particular coding frequency combination, these being divided into two distinct bands spaced one from another and the coding combinations being chosen such that frequencies ranked in the same sequence place in these combinations do not occupy the same frequency band. A signal comprising the coding combination is injected to the network (N,P) and at reception (20), is applied to demodulators (22, 23), each assigned to one respective frequency band, to be correlated with locally generated signals (25, 26) which reproduce the coding combinations with a constant frequency shift, the bit state being determined (24) as a function of the correlation output.

Abstract translation: 在传输（10）中，通过产生（12）特定的编码频率组合，将这些被分成两个彼此间隔开的不同频带，并且编码组合被选择使得频率分级为 这些组合中的相同序列位置不占用相同的频带。 包括编码组合的信号被注入到网络（N，P）并且在接收（20）处被施加到每个分配给一个相应频带的解调器（22,23），以与本地产生的信号（25 ，26），其以恒定的频移重现所述编码组合，所述位状态被确定为（24）作为所述相关输出的函数。

公开(公告)号：US4736377A

公开(公告)日：1988-04-05

申请号：US828184

申请日：1986-02-11

Applicant: Frank Bradley ,  Royce Fletcher

Inventor： Frank Bradley ,  Royce Fletcher

IPC: H04J3/14 ,  H04L1/00 ,  H04L1/02 ,  H04L1/24 ,  H04L7/04 ,  G06F11/10

CPC classification number: H04L1/0061 ,  H04J3/14 ,  H04L1/02 ,  H04L1/24 ,  H04L7/048

Abstract: The reliability of a high-speed digital data traffic channel is determined by establishing end-to-end synchronization by use of confirming error detecting data transmitted on a side channel from an originating end, comparing the traffic data and the error detecting data and from time to time re-confirming the validity of the synchronization.

公开(公告)号：US4447903A

公开(公告)日：1984-05-08

申请号：US266230

申请日：1981-05-22

Applicant: Ake N. Sewerinson

Inventor： Ake N. Sewerinson

IPC: G06F11/00 ,  G06F11/08 ,  G06F11/16 ,  H04L1/00 ,  H04L1/02 ,  G06F11/14

CPC classification number: H04L1/02 ,  G06F11/08 ,  G06F11/1625 ,  H04L1/004

Abstract: A forward error correcting digital transmission system having two separate transmission channels carrying redundant information. The signal on the first channel is encoded by combining each present bit with itself delayed m bits in time. The signal on the second channel may be encoded in the same manner only with a delay of n bits in time, or left without coding, i.e., n=0, in any case m and n are unequal integers. Both first and second channels are transmitted over separate transmission paths to the receiving terminal where each is independently decoded to obtain the original binary information from each received encoded signal.If an error is introduced into one of the channels during transmission, the encoded information necessarily contains an error in the present bit and its associated m or n delayed bit. Upon detection of an error by simple bit comparisons between the two decoded channels, the present decoded bit and its associated delayed decoded bit, if any, are changed in the apropriate channel in order to correct for the error.

Abstract translation: 一种前向纠错数字传输系统，具有两个独立的传输信道，它们承载冗余信息。 通过将每个当前位与其自身延迟的m位组合在一起来对第一通道上的信号进行编码。 在第二通道上的信号可以以相同的方式以n位的时间延迟编码，或者在没有编码的情况下左编码，即n = 0，在任何情况下，m和n是不等的整数。 第一和第二信道都通过单独的传输路径发送到接收终端，其中每个被独立地解码以从每个接收的编码信号获得原始二进制信息。 如果在传输期间将错误引入到一个信道中，则编码信息必然包含当前位中的错误及其相关的m或n个延迟位。 在通过两个解码信道之间的简单比特比较检测到错误时，如果有的话，当前解码比特及其相关联的延迟解码比特在适当的信道中被改变，以便校正错误。

公开(公告)号：US4369516A

公开(公告)日：1983-01-18

申请号：US187303

申请日：1980-09-15

Applicant: John P. Byrns

Inventor： John P. Byrns

IPC: H03M5/06 ,  G06F20060101 ,  G06F11/30 ,  G06F13/38 ,  H04B14/00 ,  H04L1/02 ,  H04L5/14 ,  H04L25/02 ,  H04L25/49 ,  H04Q20060101 ,  H04Q1/30 ,  H04Q3/58 ,  H03K5/156

CPC classification number: H04L1/02 ,  H04L25/4904 ,  H04L5/1423

Abstract: A data transmission system is described where data signals are bidirectionally transmitted between a data transmitter and a plurality of data receivers in a self-clocking bit streams carried on true data and complement data signal lines and a non-return-to-zero (NRZ) bit streams on a return data signal line. According to an inventive data transmission scheme, data signals are transmitted by the data transmitter by utilizing the four possible two-bit binary states of the true data and complement data signal lines. Of the four two-bit binary states, a word state is provided before and after the data signal and a one state or zero state followed by a bit state is provided for each bit of the data signal. The data receivers detect the bit state to recover a bit clock signal and detect the one state and zero state to recover an NRZ data signal. In response to the bit clock signal, the NRZ data signal is serially shifted into a register while a previously parallel loaded return data signal is shifted out of the register and applied to the return data signal line. The inventive data transmission scheme is self-clocking and highly immune to speed and timing variations in the transmission. The inventive data transmission may be advantageously utilized for data transmission in many different data transmission systems, such as computer systems for data transmission between a microprocessor and peripheral units and control systems for data transmission between a central control station and geographically remote stations.

Abstract translation: 描述了一种数据传输系统，其中数据信号在数据发射机和多个数据接收机之间以真实数据和补码数据信号线和不归零（NRZ）载波的自定时比特流双向传输， 返回数据信号线上的位流。 根据本发明的数据传输方案，通过利用真实数据和补码数据信号线的四个可能的两位二进制状态，数据发送器发送数据信号。 在四个二位二进制状态中，在数据信号之前和之后提供字状态，并且为数据信号的每个位提供一个状态或零状态，随后是位状态。 数据接收器检测位状态以恢复位时钟信号并检测一个状态和零状态以恢复NRZ数据信号。 响应于位时钟信号，NRZ数据信号被串行地移入寄存器，而先前并行加载的返回数据信号从寄存器中移出并施加到返回数据信号线。 本发明的数据传输方案是自时钟的，并且高度免疫传输中的速度和时序变化。 本发明的数据传输可以有利地用于许多不同数据传输系统中的数据传输，诸如用于微处理器和外围设备之间的数据传输的计算机系统以及用于在中央控制站和地理上远程站之间进行数据传输的控制系统。