公开(公告)号：US5519692A

公开(公告)日：1996-05-21

申请号：US407554

申请日：1995-03-20

申请人： John E. Hershey ,  Gary J. Saulnier ,  Amer A. Hassan

发明人： John E. Hershey ,  Gary J. Saulnier ,  Amer A. Hassan

IPC分类号： H04B1/69 ,  H04L27/26 ,  H04K1/00

CPC分类号： H04B1/69 ,  H04L27/2601

摘要： A set of phases defining an `address` and a `spreading key` is selected. These are employed in determining a preamble waveform and a traffic waveform. The preamble carrier waveform is a sum of a set of tones each offset by its phase, whereas the traffic carrier waveform is the product of these same offset tones. The tones have frequencies which are geometrically increasing multiples of a fundamental frequency. The phases and magnitudes of the preamble and traffic carrier waveforms are determined and prestored in a transmit and receive unit storage device. An inverse discrete Fourier Transform unit (IDFT) in the transmit unit receives the phase preamble offsets and magnitudes from the storage unit and creates a preamble carrier signal transmitted to the receive unit which determines if the phases match those which it is to listen to. If not, the following message is ignored; if they are, the following message is despread and decoded. IDFT creates a traffic carrier waveform from the traffic phases and magnitudes. Binary information is encoded in the carrier, processed and transmitted to the receive unit. A discrete Fourier Transform unit converts the received signal into phases and magnitudes. A dot product unit determines a dot product of the phase and magnitudes of the received signal and the traffic carrier waveform over a number of frequencies. A decision unit determines a binary message from the dot product.

摘要翻译： 选择定义“地址”和“扩展密钥”的一组相位。 这些用于确定前导码波形和业务波形。 前导码载波波形是每个偏移其相位的一组音调的和，而业务载波波形是这些相同偏移音调的乘积。 音调具有几何上增加基频倍数的频率。 前导码和业务载波波形的相位和幅度被确定并预存储在发送和接收单元存储设备中。 发送单元中的离散傅里叶逆变换单元（IDFT）从存储单元接收相位前导偏移量和幅度，并产生发送到接收单元的前导码载波信号，该信号确定相位是否匹配要收听的相位。 如果没有，则忽略以下消息; 如果它们是，则以下消息被解扩和解码。 IDFT从交通阶段和幅度创建一个载波波形。 二进制信息被编码在载体中，被处理并发送到接收单元。 离散傅立叶变换单元将接收的信号转换为相位和幅度。 点积单位确定接收信号的相位和幅度以及多个频率上的业务载波波形的积积。 决策单元从点积确定二进制消息。

公开(公告)号：US5563906A

公开(公告)日：1996-10-08

申请号：US407560

申请日：1995-03-20

申请人： John E. Hershey ,  Gary J. Saulnier ,  Amer A. Hassan

发明人： John E. Hershey ,  Gary J. Saulnier ,  Amer A. Hassan

IPC分类号： H04B1/69 ,  H04B7/12

CPC分类号： H04B1/69

摘要： The present invention provides a novel Geometric Harmonic Modulation (GHM) method. The GHM method functions in two modes, a preamble mode and a traffic mode. During the preamble mode, n+1 frequencies are each offset by a predetermined phase in a transmit unit and passed through a channel to a receive unit. The set of phases is used as the spreading code in the transmit unit, and also acts as an `address` of intended receive units. The receive unit monitors preamble signals to determine the phases. When it recognizes a set of phases, or `address`, which pertains to itself, the receive unit stores the phases and uses these phases to despread and decode the appended message. After the preamble mode is finished, the GHM modulator enters the traffic mode and requests the message to be transmitted from the message source. A traffic carrier waveform is created by multiplying tones, each having its specific phase. An analog or binary message is encoded by modulating the traffic carder waveform. The receive unit detects a preamble carrier and recovers the particular preamble phases to be used as the despreading `key`. The receive unit then employs the phases in despreading the received signal to recover the transmitted binary message.

摘要翻译： 本发明提供了一种新颖的几何谐波调制（GHM）方法。 GHM方法在两种模式中起作用，即前导码模式和流量模式。 在前导码模式期间，n + 1个频率各自在发送单元中被预定的相位偏移并且通过信道被传送到接收单元。 该组相位被用作发送单元中的扩展码，并且还用作预期接收单元的“地址”。 接收单元监视前置信号以确定相位。 当它识别与本身相关的一组相位或“地址”时，接收单元存储相位并使用这些相位对所附加的消息进行解扩和解码。 在前导码模式完成之后，GHM调制器进入业务模式，并请求消息从消息源发送。 通过乘以每个具有其特定相位的音调来创建交通载波波形。 模拟或二进制消息通过调制业务量卡波形进行编码。 接收单元检测前同步码载波并恢复要用作解扩“密钥”的特定前同步码相位。 然后，接收单元采用解扩接收信号的相位来恢复发送的二进制消息。

公开(公告)号：US5497397A

公开(公告)日：1996-03-05

申请号：US267346

申请日：1994-06-29

申请人： John E. Hershey ,  Gary J. Saulnier

发明人： John E. Hershey ,  Gary J. Saulnier

IPC分类号： H04L27/26 ,  H04L27/00

CPC分类号： H04L27/2602

摘要： Data words are transmitted over a radio channel with a novel modulation scheme which transmits data in parallel. An entire data word is modulated by separating a carrier frequency band into a number of discrete `tones`. Tone T.sub.1 is set to a zero phase shift in order to provide timing in synchronization of the signal. The remaining tones are phase shifted according to a predetermined convention, thereby encoding the bits of the data word. The phase shifts for all tones comprises a spectrum which is transmitted to a receiver simultaneously. A receiver monitors tone T.sub.1 for zero phase shifts to provide synchronization of the signal. The remaining tones are analyzed for their phase shift to provide bits which are assembled into a transmitted data word. Since the bits are transmitted in parallel as the data word, as opposed to conventional modulation schemes, the throughput is increased.

摘要翻译： 数据字通过无线电信道通过并行传输数据的新型调制方案传输。 通过将载波频带分离成多个离散的“音调”来调制整个数据字。 音调T1被设置为零相移，以提供信号同步的定时。 剩余的音调根据预定的约定相移，从而对数据字的比特进行编码。 所有音调的相移包括同时发送到接收机的频谱。 接收机监视音调T1用于零相移以提供信号的同步。 分析剩余的音调以进行相移，以提供组合成传输数据字的位。 由于与传统调制方案相反，这些比特作为数据字并行发送，因此增加了吞吐量。

公开(公告)号：US5568509A

公开(公告)日：1996-10-22

申请号：US407552

申请日：1995-03-20

申请人： John E. Hershey ,  Amer A. Hassan ,  Gary J. Saulnier

发明人： John E. Hershey ,  Amer A. Hassan ,  Gary J. Saulnier

IPC分类号： H04B1/69 ,  H04B7/12

CPC分类号： H04B7/12 ,  H04B1/69

摘要： A traffic carrier waveform W.sub.n (.PHI.,R;t) being the product of a number of tones is employed in transmitting blocks of information from a transmit unit to a receive unit. The tones are geometrically increasing multiples of a frequency of a fundamental tone. Each tone incorporates a tone phase. The selection of these tone phases uniquely identifies each transmitted signal. The tone phases also is used as a `key` in converting a message signal into a direct wide spectrum signal for communication. To insure that third parties do not decode the transmitted message, the tone phases are transformed to seed phases by a method known to both the transmit and receive units, but not to third parties. The seed phases are then transmitted by intermittent preamble carrier waveform to the receive unit which transforms these into the tone phases and decodes the message signal. The seed phases may be dynamically changed according to a sequence known or generated by both the transmit unit and receive unit. In another embodiment, the tone phases may also be prestored in both the transmit and receive unit, and there is no need to calculate and transmit seed phases.

摘要翻译： 在从发送单元向接收单元发送信息块中采用作为多个音调的乘积的业务载波波形Wn（PHI，R; t）。 色调是基本色调的频率的几何增加倍数。 每个音调都包含一个音调阶段。 这些音调相位的选择唯一地标识每个发送的信号。 音调相位也被用作将消息信号转换成用于通信的直接宽频谱信号的“键”。 为了确保第三方不解码发送的消息，通过发送和接收单元已知的方法将音调相位转换为种子阶段，而不是向第三方转换。 然后，通过间歇前导码载波波形将种子相位发送到接收单元，接收单元将其转换成音调相位并对消息信号进行解码。 种子阶段可以根据已知的或由发射单元和接收单元两者产生的序列动态地改变。 在另一个实施例中，音调相位也可以预先存储在发射和接收单元中，并且不需要计算和发射种子相位。

公开(公告)号：US5568507A

公开(公告)日：1996-10-22

申请号：US407088

申请日：1995-03-20

申请人： John E. Hershey ,  Gary J. Saulnier ,  Amer A. Hassan

发明人： John E. Hershey ,  Gary J. Saulnier ,  Amer A. Hassan

IPC分类号： H04B1/69 ,  H04B7/12

CPC分类号： H04B1/69 ,  H04B7/12

摘要： The present invention provides a novel Geometric Harmonic Modulation (GHM) system. The GHM system operates in two modes, a preamble mode and a traffic mode. During the preamble mode, n+1 frequencies are each offset by a predetermined phase offset in the transmit unit and passed through a channel to a receive unit. The set of phase offsets is used as the spreading code in the transmit unit, and also acts as an `address` of receive units to transmit to. The receive unit monitors preamble signals to determine the phase offsets. When it recognizes a set of phase offsets, or `address`, which pertains to itself, the receive unit stores the phase offsets and uses these phase offsets to despread and decode the appended message. After the preamble mode is finished, the GHM modulator enters the traffic mode and requests the message to be transmitted from the message source. A traffic carrier waveform is created by multiplying tones, each having its specific phase offset. An analog or binary message is encoded by modulating the traffic carrier waveform. The receive unit detects a preamble carrier and recovers the particular preamble phase offsets to be used as the despreading `key`. The receive unit then employs the phase offsets in despreading the received signal to recover the transmitted message.

摘要翻译： 本发明提供了一种新颖的几何谐波调制（GHM）系统。 GHM系统在两种模式下工作，即前导码模式和流量模式。 在前导码模式期间，n + 1个频率各自在发送单元中被预定的相位偏移偏移，并且通过信道传送到接收单元。 相位偏移集合用作发射单元中的扩展码，并且还用作要发送到的接收单元的“地址”。 接收单元监视前置信号以确定相位偏移。 当它识别出与本身相关的一组相位偏移或“地址”时，接收单元存储相位偏移并使用这些相位偏移来对附加的消息进行解扩和解码。 在前导码模式完成之后，GHM调制器进入业务模式，并请求消息从消息源发送。 通过乘以各个具有其特定相位偏移的音调来创建载波波形。 模拟或二进制消息通过调制业务载波波形进行编码。 接收单元检测前同步码载波并恢复要用作解扩“密钥”的特定前导码相位偏移。 然后，接收单元在解扩接收信号中采用相位偏移来恢复发送的消息。

公开(公告)号：US07313817B2

公开(公告)日：2007-12-25

申请号：US10462937

申请日：2003-06-17

申请人： Scott C. Evans ,  John E. Hershey ,  Gary J. Saulnier

发明人： Scott C. Evans ,  John E. Hershey ,  Gary J. Saulnier

IPC分类号： G06F9/00 ,  G06F15/16 ,  G06F17/00 ,  G06F15/173

CPC分类号： H04L43/16

摘要： A system, method and program storage device tangibly embodying a program of instructions for determining whether to allow transmission of data from a source destined for a destination over a network, comprising: acquiring a string of a predetermined length in bits (L) from the data; partitioning the acquired string into a partition of phrases, each of the phrases in the partition being unique and having one or more bits; determining a number of phrases (N) in the partition; estimating a normalized complexity (C) for the Kolmogorov Complexity in the acquired string via C ≡ N 2 ⁢ L ; and evaluating whether to allow transmission of the data based on a comparison of whether the normalized complexity estimate (C) is within a predetermined normal complexity estimate band.

摘要翻译： 一种系统，方法和程序存储装置，其有形地体现用于确定是否允许通过网络发送来自目的地的目的地的源的数据的指令的程序，包括：从数据中以比特（L）获取预定长度的字符串 ; 将所获取的字符串划分为短语分区，分区中的每个短语是唯一的，并具有一个或多个比特; 确定分区中的短语数量（N）; 通过