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    Method and apparatus for performing diversity voting in a communication system
    1.
    发明授权
    Method and apparatus for performing diversity voting in a communication system 失效
    在通信系统中执行分集投票的方法和装置

    公开(公告)号：US5719871A

    公开(公告)日：1998-02-17

    申请号：US635105

    申请日：1995-04-19

    申请人： David P. Helm ,  Alan L. Wilson ,  Robert D. LoGalbo

    发明人： David P. Helm ,  Alan L. Wilson ,  Robert D. LoGalbo

    IPC分类号： H04B7/02 ,  H04L1/06 ,  H04J13/00

    CPC分类号： H04B7/022 ,  H04L1/06

    摘要： A communication system (200) employs a method and apparatus for performing diversity voting in the communication system. A comparator (206) receives a signal frame (207-209) of code words from each of multiple signal sources (202-204). A prioritized code word of each signal frame occupies a corresponding frame position and has a respective signal quality metric associated therewith. The comparator determines whether each signal quality metric accurately represents the signal quality of its respective prioritized code word. When the signal quality metrics do not accurately represent the signal qualities of their respective prioritized code words, the comparator determines a supplemental signal quality metric for each prioritized code word. The comparator then selects one prioritized code word from all the corresponding prioritized code words based on a comparison of the supplemental signal quality metrics for input into the corresponding frame position of a voted signal frame (330).

    摘要翻译： 通信系统（200）采用在通信系统中执行分集投票的方法和装置。 比较器（206）从多个信号源（202-204）中接收码字的信号帧（207-209）。 每个信号帧的优先码字占据对应的帧位置，并且具有与其相关联的相应的信号质量度量。 比较器确定每个信号质量度量是否精确地表示其相应的优先化码字的信号质量。 当信号质量度量不准确地表示它们各自的优先化码字的信号质量时，比较器确定每个优先化码字的补充信号质量度量。 比较器然后基于用于输入到投票信号帧（330）的相应帧位置的补充信号质量度量的比较，从所有对应的优先化码字中选择一个优先化码字。

    Reduction of power consumption in a portable communication unit
    3.
    发明授权
    Reduction of power consumption in a portable communication unit 失效
    降低便携式通信单元中的功耗

    公开(公告)号：US5293639A

    公开(公告)日：1994-03-08

    申请号：US28530

    申请日：1993-03-09

    申请人： Alan L. Wilson ,  David L. Muri ,  Tony R. Branch

    发明人： Alan L. Wilson ,  David L. Muri ,  Tony R. Branch

    IPC分类号： H04B1/40 ,  H04B7/005

    CPC分类号： H04W52/20 ,  H04B1/40 ,  Y02B60/50

    摘要： Power consumption in a portable communication unit (101) is reduced by first transmitting at a first time, a message (701) at a first transmit power level to a repeater (103) on a first communication channel. At a second time the message (701) is repeated (903) by the repeater on a second communication channel, thereby transmitting a delayed message (703). The portable communication unit (101) tunes (807) to the second communication channel after transmitting all of the message (701), so as to receive at least part of the delayed message (703). The repeater (103) establishes a receive quality metric (705) for the message (701) and transmits (909) the receive quality metric after all of the delayed message (703) is transmitted. The portable communication unit receives and stores (809) the receive quality metric (705), and determines a second transmit power level for transmitting another message using the receive quality metric.

    摘要翻译： 便携式通信单元（101）中的功率消耗通过首先在第一通信信道上以第一发射功率电平发送到中继器（103）的消息（701）首先被发送。 在第二时间，由第二通信信道上的中继器重复消息（701）（903），由此发送延迟消息（703）。 在发送所有消息（701）之后，便携式通信单元（101）调谐（807）到第二通信信道，以便接收至少部分延迟消息（703）。 中继器（103）为消息（701）建立接收质量度量（705），并且在所有延迟消息（703）被发送之后发送（909）接收质量度量。 便携式通信单元接收并存储（809）接收质量度量（705），并且使用接收质量度量确定用于发送另一个消息的第二发射功率电平。

    Signal selection by statistical comparison
    4.
    发明授权
    Signal selection by statistical comparison 失效
    信号选择通过统计比较

    公开(公告)号：US4710945A

    公开(公告)日：1987-12-01

    申请号：US858462

    申请日：1986-04-30

    申请人： Paul M. Bocci ,  Carl M. Pietrzak, Jr. ,  Alan L. Wilson

    发明人： Paul M. Bocci ,  Carl M. Pietrzak, Jr. ,  Alan L. Wilson

    IPC分类号： H04B7/08

    CPC分类号： H04B7/082

    摘要： A signal selection system is disclosed wherein a plurality of received signals are analyzed to determine their statistical characteristics. These characteristics are compared to a predetermined statistical distribution. The signal that is statistically closest to the statistical characteristics of a known signal is selected for further processing and reception.

    摘要翻译： 公开了一种信号选择系统，其中分析多个接收信号以确定其统计特性。 将这些特征与预定的统计分布进行比较。 统计上最接近已知信号的统计特性的信号被选择用于进一步的处理和接收。

    Digital sequence polarity detection with adaptive synchronization
    6.
    发明授权
    Digital sequence polarity detection with adaptive synchronization 失效
    数字序列极性检测与自适应同步

    公开(公告)号：US4754457A

    公开(公告)日：1988-06-28

    申请号：US903326

    申请日：1986-09-03

    申请人： Michael W. Bright ,  Alan L. Wilson

    发明人： Michael W. Bright ,  Alan L. Wilson

    IPC分类号： H04L7/04 ,  H04L25/06 ,  H04L7/06

    CPC分类号： H04L25/061 ,  H04L7/042 ,  H04L7/043

    摘要： The transmitter in a digital communication system sends a synchronization sequence that uniquely identifies the polarity of the received data. From the received data, the receiver produces non-inverted and inverted polarity data streams that couple to like synchronization detectors. Only the detector to which the correct polarity data stream is coupled responds. Logic circuitry determines which detector responds and, accordingly, selects the polarity of received data to be further processed by the receiver.After polarity is established, both detectors monitor the received data stream of the selected polarity to determine whether synchronization shifts after having been initially established. Monitoring continues until terminated by other receiver circuits.

    摘要翻译： 数字通信系统中的发射机发送唯一标识接收数据的极性的同步序列。 从接收到的数据中，接收器产生耦合到相似同步检测器的非反相和反相极性数据流。 只有正确极性数据流耦合到的检测器才能响应。 逻辑电路确定哪个检测器作出响应，并因此选择要由接收机进一步处理的接收数据的极性。 在极性建立之后，两个检测器都监视所选极性的接收数据流，以确定在初始建立之后是否同步移位。 监控继续，直到其他接收机电路终止。

    Delta modulated digital signal detector
    7.
    发明授权
    Delta modulated digital signal detector 失效
    Delta调制数字信号检测器

    公开(公告)号：US4174502A

    公开(公告)日：1979-11-13

    申请号：US951895

    申请日：1978-10-16

    申请人： Alan L. Wilson ,  Charles A. Backof, Jr.

    发明人： Alan L. Wilson ,  Charles A. Backof, Jr.

    IPC分类号： H04L1/00 ,  H04B14/06 ,  H04L1/20 ,  H03K9/00

    CPC分类号： H04B14/062 ,  H04L1/20

    摘要： A detector for delta modulated digital signals is disclosed that provides a signal quality voltage having a magnitude that is indicative of the degree of quality of the detected delta modulated digital signal. The detector totalizes the number of bit transitions occurring in successive N bit intervals. If successive totalized numbers of bit transitions are outside of a predetermined range centered about one-half of N, the detector provides a detect indication signal indicating that the delta modulated digital signal is present. Otherwise, a random or pseudorandom signal such as noise or error bursts may be present. Digital circuitry provides the detect indication signal with a logical high state when successive totalized numbers of bit transitions are outside of the predetermined range, and a logical low state when succesive totalized numbers of bit transitions are within the predetermined range. The detect indication signal may be further integrated and amplified to provide a signal quality voltage which has a magnitude indicative of the quality or signal to noise ratio of the detected delta modulated digital signal. The signal quality voltage may be advantageously utilized in a receiver voting system having a plurality of receivers for selecting the receiver having the highest quality signal.

    摘要翻译： 公开了一种用于增量调制数字信号的检测器，其提供具有指示检测到的增量调制数字信号的质量程度的幅度的信号质量电压。 检测器累加在连续的N位间隔中发生的位转换的数量。 如果位转换的连续累计数量在以N的大约一半为中心的预定范围之外，则检测器提供指示增量调制数字信号存在的检测指示信号。 否则，可能存在诸如噪声或错误突发的随机或伪随机信号。 数字电路在连续的总位数转换超出预定范围时提供具有逻辑高状态的检测指示信号，而当连续的总计数位数转换在预定范围内时，逻辑低电平状态。 检测指示信号可以进一步积分和放大，以提供信号质量电压，其具有指示所检测的增量调制数字信号的质量或信噪比的幅度。 信号质量电压可以有利地用于具有用于选择具有最高质量信号的接收机的多个接收机的接收机投票系统中。

    Method of producing an adjusted metric
    10.
    发明授权
    Method of producing an adjusted metric 失效
    生成调整度量的方法

    公开(公告)号：US5687188A

    公开(公告)日：1997-11-11

    申请号：US320714

    申请日：1994-10-11

    申请人： Gregory A. Feeney ,  Alan L. Wilson

    发明人： Gregory A. Feeney ,  Alan L. Wilson

    IPC分类号： H03M13/41 ,  H04B7/26 ,  H04B1/38 ,  H04L5/16

    CPC分类号： H04B7/26 ,  H03M13/41

    摘要： A method voting multiple messages begins with a communication unit (111) transmitting (301) a message. At each of a plurality of sites, the message is received (303) and decoded (305) such that a minimized metric is computed and decoded message is extracted from the message. The minimized metric is adjusted (307), producing an adjusted metric. Each of the plurality of sites transports (309) its decoded message and its adjusted metric to a comparator. The comparator receives (311) selecting the decoded message and the adjusted metric from each of the plurality of sites, compares (313) selecting the adjusted metric from each of the plurality of sites and finds an optimal adjusted metric. The decoded message associated with the optimal adjusted metric is then selected (315).

    摘要翻译： 投票多个消息的方法从传送（301）消息的通信单元（111）开始。 在多个站点中的每个站点处，接收（303）消息并解码（305）以使得计算最小化度量并且从消息中提取解码消息。 调整最小化度量（307），产生调整后的度量。 多个站点中的每一个将其解码的消息及其调整的度量传送（309）到比较器。 比较器从多个站点中的每一个接收（311）选择解码消息和调整的度量，比较（313）从多个站点中的每一个选择调整的度量，并找到最佳调整度量。 然后选择与最佳调整度量相关联的解码消息（315）。