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    System and method for generating signal waveforms in a CDMA cellular telephone system
    81.
    发明申请
    System and method for generating signal waveforms in a CDMA cellular telephone system 失效
    用于在CDMA蜂窝电话系统中产生信号波形的系统和方法

    公开(公告)号：US20030053519A1

    公开(公告)日：2003-03-20

    申请号：US10263898

    申请日：2002-10-02

    Inventor： Klein S. Gilhousen ,  Irwin M. Jacobs ,  Roberto Padovani ,  Lindsay A. Weaver JR. ,  Charles E. Wheatley III ,  Andrew J. Viterbi

    IPC: H04B001/707

    CPC classification number: H04L1/0002 ,  H04B1/707 ,  H04B1/70757 ,  H04B1/7115 ,  H04B7/2618 ,  H04B7/2628 ,  H04B7/2637 ,  H04B2201/70701 ,  H04B2201/70703 ,  H04J3/02 ,  H04J3/1688 ,  H04J3/22 ,  H04J13/0022 ,  H04J13/0048 ,  H04J13/12 ,  H04L1/0071 ,  H04L1/0072 ,  H04L1/06 ,  H04L1/08 ,  H04L5/02 ,  H04L5/12 ,  H04L23/02 ,  H04W52/08 ,  H04W52/10 ,  H04W52/26

    Abstract: A system and method for communicating information signals using spread spectrum communication techniques. PN sequences are constructed that provide orthogonality between the users so that mutual interference will be reduced, allowing higher capacity and better link performance. With orthogonal PN codes, the cross-correlation is zero over a predetermined time interval, resulting in no interference between the orthogonal codes, provided only that the code time frames are time aligned with each other. In an exemplary embodiment, signals are communicated between a cell-site and mobile units using direct sequence spread spectrum communication signals. In the cell-to-mobile link, pilot, sync, paging and voice channels are defined. Information communicated on the cell-to-mobile link channels are, in general, encoded, interleaved, bi-phase shift key (BPSK) modulated with orthogonal covering of each BPSK symbol along with quadrature phase shift key (QPSK) spreading of the covered symbols. In the mobile-to-cell link, access and voice channels are defined. Information communicated on the mobile-to-cell link channels are, in general, encoded, interleaved, orthogonal signaling along with QPSK spreading.

    Abstract translation: 一种使用扩频通信技术传送信息信号的系统和方法。 构造PN序列，以提供用户之间的正交性，从而减少相互干扰，从而允许更高的容量和更好的链路性能。 对于正交PN码，在相关的时间间隔内，互相关为0，导致正交码之间没有干扰，只要码时间帧彼此时间对准。 在示例性实施例中，使用直接序列扩频通信信号在小区站点和移动单元之间传送信号。 在小区到移动链路中，定义了导频，同步，寻呼和语音信道。 在小区到移动链路信道上传送的信息通常是用每个BPSK符号的正交覆盖调制的编码，交织，双相移键（BPSK）以及覆盖符号的正交相移键（QPSK）扩展 。 在移动小区链路中，定义了接入和语音信道。 一般来说，在移动小区链路信道上传送的信息一起编码，交织，正交信令以及QPSK扩频。

    Modulation technique for transmitting multiple high data rate signals through a band limited channel
    82.
    发明授权
    Modulation technique for transmitting multiple high data rate signals through a band limited channel 有权
    用于通过频带限制信道发送多个高数据速率信号的调制技术

    公开(公告)号：US06359525B1

    公开(公告)日：2002-03-19

    申请号：US09625253

    申请日：2000-07-25

    Applicant: Chandra Mohan ,  Jayanta Majumdar

    Inventor： Chandra Mohan ,  Jayanta Majumdar

    IPC: H03K704

    CPC classification number: H04L25/4917 ,  H04L5/02 ,  H04L25/4902

    Abstract: A digital data modulator includes a source of a plurality of digital data signals having a common data bit period. A plurality of encoders each encode a corresponding one of the plurality of digital data signals using a variable pulse width code having edges occurring in respective non-overlapping intervals within the data bit period. A plurality of pulse signal generators each generate respective pulses representing the edges of the corresponding one of the encoded plurality of digital data signals. A carrier signal generator generates a carrier signal having carrier pulses corresponding to the respective pulses. A digital data demodulator includes a source of a modulated signal including successive bit periods, each bit period having a plurality of non-overlapping intervals respectively associated with corresponding intervals in successive bit periods, each interval containing a carrier pulse, spaced relative to carrier pulses in other associated intervals, representing a corresponding variable pulse width encoded digital data signal. A detector demodulates the modulated signal to generate pulses corresponding to received carrier pulses. A plurality of decoders each decode pulses received in a respective one of the plurality of associated intervals in the bit period to generate the corresponding digital data signal.

    Abstract translation: 数字数据调制器包括具有公共数据位周期的多个数字数据信号的源。 多个编码器使用具有出现在数据比特周期内的相应非重叠间隔中的边缘的可变脉冲宽度码来编码多个数字数据信号中的相应一个。 多个脉冲信号发生器各自产生表示编码的多个数字数据信号中对应的一个的边缘的各个脉冲。 载波信号发生器产生具有对应于各个脉冲的载波脉冲的载波信号。 数字数据解调器包括包括连续位周期的调制信号源，每个位周期具有分别与连续位周期中的对应间隔相关联的多个非重叠间隔，每个区间包含相对于载波脉冲间隔的载波脉冲 其他相关联的间隔，表示对应的可变脉冲宽度编码的数字数据信号。 检测器解调调制信号以产生对应于接收到的载波脉冲的脉冲。 多个解码器各自解码在比特周期中在多个相关联的间隔中的相应一个中接收的脉冲，以生成相应的数字数据信号。

    Multiplex transmission system wherein analog signal is transformed to base band, random-transformed and superimposed on dispersed signal points in vector signal space
    83.
    发明授权
    Multiplex transmission system wherein analog signal is transformed to base band, random-transformed and superimposed on dispersed signal points in vector signal space 失效
    多路传输系统，其中模拟信号被转换为基带，随机变换并叠加在矢量信号空间中的分散信号点上

    公开(公告)号：US06298036B1

    公开(公告)日：2001-10-02

    申请号：US08916595

    申请日：1997-08-22

    Applicant: Takashi Kaku ,  Ryoji Okita ,  Noboru Kawada

    Inventor： Takashi Kaku ,  Ryoji Okita ,  Noboru Kawada

    IPC: H04J1100

    CPC classification number: H04L27/3483 ,  H04L5/02

    Abstract: A transmission system for transmitting a data signal with an analog passband signal through a analog transmission line. The data signal is transformed to a signal representing a descrete data signal point in a vector signal space. The analog passband signal is transformed to a base band signal, and the base band signal is superimposed on the signal representing a descrete data signal point. A signal representing the superimposed data signal point is modulated and transmitted through the analog transmission line. In a receiver, the data signal point is decided from the signal representing the superimposed data signal point, and the superimposed bass band signal is extracted by subtracting the decided result from the signal representing the superimposed data signal point. The base band signal is transformed to the analog passband signal. A portion of information carried by the analog passband signal may be converted to a digital signal, and the digital signal is multiplexed with the data signal. Further, a portion of information of each of a plurality of analog passband signals may be converted to a digital signal, and the digital signal is multiplexed with each other, and the other portion of the information is transformed to a base band signal, and the base band signal is superimposed on a signal representing a data signal point generated from a signal generated by the multiplexing.

    Abstract translation: 一种用于通过模拟传输线传输具有模拟通带信号的数据信号的传输系统。 将数据信号变换为表示向量信号空间中的分散数据信号点的信号。 将模拟通带信号变换为基带信号，并将基带信号叠加在表示分散数据信号点的信号上。 表示叠加的数据信号点的信号被调制并通过模拟传输线传输。 在接收机中，数据信号点由表示叠加数据信号点的信号决定，并且通过从表示叠加数据信号点的信号中减去所确定的结果来提取叠加的低音带信号。 基带信号被转换成模拟通带信号。 模拟通带信号携带的信息的一部分可以被转换为数字信号，数字信号与数据信号多路复用。 此外，多个模拟通带信号中的每一个的信息的一部分可以被转换为数字信号，并且数字信号彼此复用，并且信息的另一部分被变换为基带信号，并且 基带信号被叠加在表示从由复用产生的信号产生的数据信号点的信号上。

    Use of features to represent independent bit streams or groups of bits in data transmission systems
    84.
    发明授权
    Use of features to represent independent bit streams or groups of bits in data transmission systems 失效
    使用特征来表示数据传输系统中的独立比特流或比特组

    公开(公告)号：US06269105B1

    公开(公告)日：2001-07-31

    申请号：US08870469

    申请日：1997-06-06

    Applicant: Glen A. Myers

    Inventor： Glen A. Myers

    IPC: H04J100

    CPC classification number: H04L5/02

    Abstract: A method and apparatus for simultaneously communicating a first data stream along with a second data stream. A first carrier is modulated with a first data stream and a feature of the modulated first carrier is then imposed under the control of a second independent data stream. The modulated first carrier with the imposed feature is then demodulated to provide the first data stream. The distinguishable feature of the modulated first carrier is then detected to provide the second data stream. The first and the second data streams are clocked at rates which are integer multiples of each other. The distinguishable feature of the modulated first carrier includes the amplitude of the modulated first carrier or the frequency of the modulated first carrier. M-ary information is transmitted by transmitting groups of 3 or more bits simultaneously by using distinguishable amplitude or frequency values of a feature imposed on a first carrier.

    Abstract translation: 一种用于同时传送第一数据流以及第二数据流的方法和装置。 用第一数据流调制第一载波，然后在第二独立数据流的控制下施加调制的第一载波的特征。 然后解调具有施加的特征的经调制的第一载波以提供第一数据流。 然后检测调制的第一载波的可区分特征以提供第二数据流。 第一和第二数据流以彼此的整数倍的速率被计时。 调制的第一载波的可区分特征包括调制的第一载波的幅度或调制的第一载波的频率。 通过使用强制在第一载波上的特征的可区分的幅度或频率值同时发送3个或更多个比特的组来发送M信息。

    Method and apparatus for communicating selected additional data in a data stream of fixed size
    85.
    发明授权
    Method and apparatus for communicating selected additional data in a data stream of fixed size 失效
    用于在固定大小的数据流中传送选定的附加数据的方法和装置

    公开(公告)号：US5864570A

    公开(公告)日：1999-01-26

    申请号：US824388

    申请日：1997-03-26

    Applicant: Jheroen Pieter Dorenbosch ,  Jyh-Han Lin ,  Alain Charles Louis Briancon

    Inventor： Jheroen Pieter Dorenbosch ,  Jyh-Han Lin ,  Alain Charles Louis Briancon

    IPC: H04L5/02 ,  G06F11/00 ,  H04B17/00

    CPC classification number: H04L5/02

    Abstract: A method and apparatus utilize an original stream (424) for communicating. Additional data is selected from predetermined messages to define a selected message (422). The original stream is altered (604) in a manner corresponding uniquely with the selected message to form a transmission stream (522) having a size identical to that of the original stream, and the transmission stream is then communicated (606, 608). The alteration of the stream is reversed (612) as it applies to the predetermined messages, thereby generating candidate streams. An error tally (544) corresponding to each of the candidate streams is determined (614) from an error checking mechanism (310, 312). From the candidate streams a member is selected corresponding to a lowest error tally, the member thereafter defined (620) to be a restored original stream. One of the predetermined messages is selected (622) as the selected message associated with the lowest error tally.

    Abstract translation: 方法和装置利用原始流（424）进行通信。 从预定消息中选择附加数据以定义所选择的消息（422）。 以与选择的消息唯一对应的方式改变原始流（604）以形成具有与原始流的大小相同的大小的传输流（522），然后传输传输流（606,608）。 流的改变被反转（612），因为它适用于预定的消息，从而产生候选流。 从错误检查机构（310,312）确定对应于每个候选流的错误计数（544）（614）。 从候选流中选择对应于最低错误标度的成员，其后该成员定义（620）为恢复的原始流。 选择预定消息中的一个（622）作为与最低误差计数相关联的所选择的消息。

    Two-way cable TV conversion system for data transmission over a dedicated frequency band
    88.
    发明授权
    Two-way cable TV conversion system for data transmission over a dedicated frequency band 失效
    双向有线电视转换系统具有电话线响应

    公开(公告)号：US5596361A

    公开(公告)日：1997-01-21

    申请号：US526767

    申请日：1995-09-11

    Applicant: Louis Martinez

    Inventor： Louis Martinez

    IPC: G01S13/87 ,  H04B7/26 ,  H04L5/02 ,  H04L27/20 ,  H04N7/08 ,  H04N7/085 ,  H04N7/173 ,  H04W64/00 ,  H04N7/14

    CPC classification number: G01S13/878 ,  H04B7/2621 ,  H04L27/2071 ,  H04L5/02 ,  H04N7/08 ,  H04N7/085 ,  H04N7/173 ,  H04N7/17309 ,  H04W64/00 ,  H04N2007/17372

    Abstract: A bidirectional cable television system provides for transmission of signals from cable subscribers downlink in the same direction as the ensemble of television channels which the cable television system is already constructed to deliver. The subscriber signals may be transmitted over the cable in the blanking intervals of a cable television channel, using the T-NET technique described in U.S. Pat. No. 4,750,036. Alternatively, the signals may be carried over a dedicated channel, or transmitted cochannel along a cable television channel carrying ordinary programming by adding the subscriber information to alternating video frames in alternating polarity to achieve visual cancellation. The subscriber signals are collected after the last distribution line amplifier in the cable downlink. The collected signals are transmitted to a central receiver via wireless or other customary means such as a modem. The collected signals may alternatively be transmitted over the air to the central receiver in the blanking intervals of a broadcast television channel using the T-NET technique.

    Abstract translation: 双向有线电视系统提供来自电缆用户下行链路的信号的传输方向与有线电视系统已经构建为传送的电视频道的整体相同。 用户信号可以在有线电视频道的消隐间隔内通过电缆传输，使用在美国专利No.4,215,254中描述的T-NET技术。 第4,750,036号。 或者，可以通过将具有交替视频帧的用户信息添加到交替极性以实现视觉消除的方式，通过携带普通节目的有线电视频道的专用信道或发送的同频道来传送信号。 用户信号在电缆下行链路中的最后一个配线放大器之后被收集。 所收集的信号通过诸如调制解调器之类的无线或其它常规手段传送到中央接收机。 也可以采用T-NET技术将所收集的信号通过空中传送到广播电视频道的消隐间隔中的中央接收机。

    Compatible interactive TV and multimedia delivery system two-way cable TV conversion system for data transmission over a dedicated frequency band
    89.
    发明授权
    Compatible interactive TV and multimedia delivery system two-way cable TV conversion system for data transmission over a dedicated frequency band 失效
    双向有线电视转换系统，用于通过专用频段进行数据传输

    公开(公告)号：US5589872A

    公开(公告)日：1996-12-31

    申请号：US526787

    申请日：1995-09-11

    Applicant: Louis Martinez

    Inventor： Louis Martinez

    IPC: G01S13/87 ,  H04B7/26 ,  H04L5/02 ,  H04L27/20 ,  H04N7/08 ,  H04N7/085 ,  H04N7/173 ,  H04W64/00 ,  H04N7/14

    CPC classification number: G01S13/878 ,  H04B7/2621 ,  H04L27/2071 ,  H04L5/02 ,  H04N7/08 ,  H04N7/085 ,  H04N7/173 ,  H04N7/17309 ,  H04W64/00 ,  H04N2007/17372

    Abstract: A bidirectional cable television system provides for transmission of signals from cable subscribers downlink in the same direction as the ensemble of television channels which the cable television system is already constructed to deliver. The subscriber signals may be transmitted over the cable in the blanking intervals of a cable television channel, using the T-NET technique described in U.S. Pat. No. 4,750,036. Alternatively, the signals may be carried over a dedicated channel, or transmitted cochannel along a cable television channel carrying ordinary programming by adding the subscriber information to alternating video frames in alternating polarity to achieve visual cancellation. The subscriber signals are collected after the last distribution line amplifier in the cable downlink. The collected signals are transmitted to a central receiver via wireless or other customary means such as a modem. The collected signals may alternatively be transmitted over the air to the central receiver in the blanking intervals of a broadcast television channel using the T-NET technique.

    Abstract translation: 双向有线电视系统提供来自电缆用户下行链路的信号的传输方向与有线电视系统已经构建为传送的电视频道的整体相同。 用户信号可以在有线电视频道的消隐间隔内通过电缆传输，使用在美国专利No.4,215,254中描述的T-NET技术。 第4,750,036号。 或者，可以通过将具有交替视频帧的用户信息添加到交替极性以实现视觉消除的方式，通过携带普通节目的有线电视频道的专用信道或发送的同频道来传送信号。 用户信号在电缆下行链路中的最后一个配线放大器之后被收集。 所收集的信号通过诸如调制解调器之类的无线或其它常规手段传送到中央接收机。 也可以采用T-NET技术将所收集的信号通过空中传送到广播电视频道的消隐间隔中的中央接收机。

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