公开(公告)号：US5909460A

公开(公告)日：1999-06-01

申请号：US568664

申请日：1995-12-07

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H01Q3/26 ,  H04B7/10 ,  H04B1/707

CPC分类号： H01Q3/26

摘要： A digital beamforming network for transmitting a first number of digital information signal using a second number of antenna array elements is disclosed. Assemblers are used for assembling one information bit selected from each of the information signals into a bit vector. Digital processors have an input for the bit vector and a number of outputs equal to the second number of antenna elements and process the bit vector. Finally, modulation waveform generators coupled to each of the second number of outputs generate a signal for transmission by each antenna element.

摘要翻译： 公开了一种数字波束形成网络，用于使用第二数量的天线阵列元件发射第一数字信号信号。 汇编器用于将从每个信息信号中选择的一个信息位组合成位向量。 数字处理器具有用于位向量的输入和等于第二数量的天线元件的输出数量并处理位向量。 最后，耦合到第二数量的输出中的每一个的调制波形发生器产生用于由每个天线元件传输的信号。

公开(公告)号：US5862173A

公开(公告)日：1999-01-19

申请号：US570431

申请日：1995-12-11

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L27/22 ,  H04B1/707 ,  H04B1/71 ,  H04B1/7107 ,  H04J13/00 ,  H04K1/00

CPC分类号： H04B1/7107 ,  H04J13/00 ,  H04B1/7101

摘要： A method and receiver which provides, among other features, for resubtraction of an already subtracted signal in order to eliminate subtraction errors, termed re-orthogonalization, is described herein. According to exemplary embodiments, pairwise combinations of spreading codes are used to despread received composite signals. For example, these pairwise combinations can include a first spreading code associated with a signal that has already been subtracted and a second spreading code associated with a signal which is weaker than that associated with the first spreading code. In this way both resubtraction and subtraction are performed at the same time.

摘要翻译： 在此描述了一种方法和接收机，其中提供了用于重新抽取已经减去的信号以便消除称为重新正交化的减法误差的其它特征。 根据示例性实施例，扩展码的成对组合用于对接收到的复合信号进行解扩。 例如，这些成对组合可以包括与已经被减去的信号相关联的第一扩展码和与比第一扩展码相关联的信号弱的信号相关联的第二扩展码。 以这种方式，同时执行重新抽取和减法。

公开(公告)号：US5844925A

公开(公告)日：1998-12-01

申请号：US682330

申请日：1996-07-17

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H03M13/01 ,  H04L9/06 ,  H04L9/24 ,  H04L9/26 ,  G06F7/02 ,  H04L1/00

CPC分类号： H04L9/0668 ,  H04L2209/34

摘要： A system and a method for transforming an N-bit input value into a transformed N-bit output value which may be used for error correction coding or ciphering of the N-bit input value. In a representative embodiment, the system comprises means for providing a set of all possible N-bit values as a plurality of mutually exclusive subsets each containing at least one possible N-bit value; means for comparing the N-bit input value with each of the subsets to determine to which one of the subsets the N-bit input value belongs; and means for selecting as the transformed N-bit output value an N-bit value from another one of the subsets. In accordance with the present invention, each of these subsets may be cyclically generated in a linear feedback shift register (LFSR) or, alternatively, stored in a memory.

公开(公告)号：US5842140A

公开(公告)日：1998-11-24

申请号：US728432

申请日：1996-10-09

申请人： Paul W. Dent ,  Ross Warren Lampe

发明人： Paul W. Dent ,  Ross Warren Lampe

IPC分类号： H03F3/68 ,  H03F1/02 ,  H03F1/32 ,  H03F3/60 ,  H04B1/04 ,  H04B1/16 ,  H04B1/52 ,  H04B7/185 ,  H04B1/38 ,  H04M1/00

CPC分类号： H04B1/1607 ,  H03F1/0294 ,  H03F1/3229 ,  H03F1/3252 ,  H03F3/602 ,  H04B1/0483 ,  H04B1/52 ,  H04B1/04 ,  H04B2001/0433

摘要： A method and a device for increasing the battery life of a battery in a handheld radio transmitter/receiver are disclosed. The disclosed method comprises the steps of rectifying radio-frequency waste energy which is not radiated from an antenna to produce a direct current and directing that current back to the battery of the handheld radio transmitter/receiver. The disclosed device comprises an amplifier for amplifying a transmit signal and sending the transmit signal to an antenna. The disclosed device also comprises an isolator for diverting energy reflected from the antenna and a rectifier for rectifying that diverted energy to produce a direct current which is supplied back to the battery of the handheld radio transmitter/receiver.

摘要翻译： 公开了一种用于增加手持式无线电发射机/接收机中的电池的电池寿命的方法和装置。 所公开的方法包括以下步骤：对不从天线辐射的射频废弃能量进行整流以产生直流电流并将该电流引导回手持式无线电发射机/接收机的电池。 所公开的设备包括用于放大发射信号并将发射信号发送到天线的放大器。 所公开的设备还包括用于转移从天线反射的能量的隔离器和整流器，用于整流转移的能量以产生被提供回手持式无线电发射机/接收机的电池的直流电。

公开(公告)号：US5838267A

公开(公告)日：1998-11-17

申请号：US728158

申请日：1996-10-09

申请人： Yi-Pin Eric Wang ,  Sandeep Chennakeshu ,  Paul W. Dent ,  Kumar Balachandran

发明人： Yi-Pin Eric Wang ,  Sandeep Chennakeshu ,  Paul W. Dent ,  Kumar Balachandran

IPC分类号： H03M13/37 ,  G06F11/10 ,  H03M13/00 ,  H03M13/29 ,  H04L1/00 ,  H04L1/06 ,  H04L1/18 ,  G06F11/00

CPC分类号： H04L1/0057 ,  H03M13/00 ,  H03M13/2927 ,  H03M13/293 ,  H03M13/2942 ,  H03M13/3769 ,  H04L1/06 ,  H03M13/1505 ,  H03M13/6306 ,  H04L1/0071

摘要： A method for encoding and decoding the digital information sequence uses a combination of two block codes to simultaneously correct and detect errors. The information sequence is encoded by a first stage of the encoder to produce an information code word including an information vector and a primary redundancy vector. The primary redundancy vector is encoded in a second stage of the encoder to obtain a redundancy code word. The information code word and redundancy code word are interleaved and transmitted to the receiver. At the receiver, the information code word and redundancy code word are decoded in a first stage of the decoder to obtain a first estimate of the information code word. The first estimate of the information code word is decoded in the second stage of the decoder to produce a second estimate of the information code word. The distance between the first and second estimates of the information code word is evaluated. If the distance is more than one, the received code word is erased. In another embodiment, the information sequence is repeated at the receiver. Each repetition includes a parity check resulting from the same code or from different codes. The received information vectors are selectively combined and then individually decoded using the individual parity vectors to generate multiple estimates of the information sequence. The estimates are then combined using hard or soft combining techniques.

摘要翻译： 用于对数字信息序列进行编码和解码的方法使用两个块码的组合来同时校正和检测错误。 信息序列由编码器的第一级编码，以产生包括信息向量和主冗余向量的信息码字。 主冗余矢量被编码在编码器的第二级以获得冗余码字。 信息码字和冗余码字被交织并发送到接收机。 在接收机处，信息码字和冗余码字在解码器的第一级解码，以获得信息码字的第一估计。 在解码器的第二级解码信息码字的第一估计，以产生信息码字的第二估计。 评估信息码字的第一和第二估计之间的距离。 如果距离大于1，则接收到的代码字被擦除。 在另一个实施例中，在接收器处重复信息序列。 每个重复都包括由相同代码或不同代码产生的奇偶校验。 选择性地组合所接收的信息向量，然后使用各个奇偶校验向量单独解码以生成信息序列的多个估计。 然后使用硬或软组合技术组合估计值。

公开(公告)号：US5812947A

公开(公告)日：1998-09-22

申请号：US757635

申请日：1996-12-02

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04J1/00 ,  H01Q1/24 ,  H01Q1/28 ,  H01Q21/08 ,  H01Q21/28 ,  H01Q25/00 ,  H04B7/08 ,  H04B7/10 ,  H04B7/185 ,  H04B7/204 ,  H04B7/212 ,  H04J3/00 ,  H04L1/00 ,  H04L1/06 ,  H04L25/03 ,  H04W16/02 ,  H04W16/14 ,  H04W74/08 ,  H04W84/02 ,  H04W84/04 ,  H04W84/06 ,  H04Q7/20

CPC分类号： H04W16/02 ,  H01Q1/246 ,  H01Q1/288 ,  H01Q21/08 ,  H01Q21/28 ,  H01Q25/00 ,  H01Q25/007 ,  H04B7/0851 ,  H04B7/10 ,  H04B7/18513 ,  H04B7/18515 ,  H04B7/18532 ,  H04B7/18567 ,  H04B7/2041 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/03331 ,  H04W84/025 ,  H04B7/0837 ,  H04B7/2046 ,  H04L1/007 ,  H04L25/03203 ,  H04L25/0328 ,  H04L25/03299 ,  H04W16/14 ,  H04W74/08 ,  H04W84/042 ,  H04W84/06

摘要： A radio communication system and method for minimizing co-channel interference comprises a technique for communicating between first stations and second stations. The technique involves: i) processing, at a first station, first signals into a form representative of modulated radio signals; ii) combining the representations to form a number of transmit signals using a set of combining parameters; iii) transmitting the transmit signals using a transmitter and antenna for each of the signals; iv) receiving the transmit signals at the second stations to produce received signals; v) measuring at the second stations an amount received of at least one unwanted signal relative to the amount of wanted signal received to produce measurement results; vi) transmitting the measurement results from the second stations to the first station; and vii) receiving the measurement results at the first station and using the results to modify the combining parameters such that unwanted signals received at the second stations are reduced and wanted signals enhanced. The measuring step includes the step of correlating received signals with known signals to produce the amount of at least one unwanted signal, and the amount of wanted signal.

摘要翻译： 用于最小化同信道干扰的无线电通信系统和方法包括用于在第一站和第二站之间进行通信的技术。 该技术涉及：i）在第一站处将第一信号处理成表示调制无线电信号的形式; ii）使用一组组合参数组合所述表示形成多个发射信号; iii）使用用于每个信号的发射机和天线发射发射信号; iv）在第二站处接收发射信号以产生接收信号; v）在第二站处测量接收到的至少一个不需要的信号的量相对于接收到的所需信号量，以产生测量结果; vi）将测量结果从第二站传送到第一站; 以及vii）在第一站处接收测量结果，并使用结果来修改组合参数，使得在第二站处接收到的不需要的信号被减少并且需要的信号被增强。 测量步骤包括将接收的信号与已知信号相关以产生至少一个不需要的信号的量以及所需信号的量的步骤。

公开(公告)号：US5764646A

公开(公告)日：1998-06-09

申请号：US626350

申请日：1996-04-02

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L1/16 ,  H04L12/56 ,  H04L25/03 ,  H04J13/04 ,  H04B7/216

CPC分类号： H04L25/03331 ,  H04L1/1635

摘要： A system for transmitting digital data messages between a plurality of stations using a common communications channel is disclosed. The data messages are assembled into data packets which include address and control information. The data packets are then transmitted from the stations over the common channel using appropriate data representative waveforms or modulation. A composite waveform representative of the data packets including potentially time overlapping data packets are received and processed to decode at least one packet. The waveform representative of the at least one decoded packet is reconstructed and subtracted from the received composite waveform to obtain a residual waveform. The residual waveform is then further processed to attempt to decode at least one further packet.

摘要翻译： 公开了一种使用公共通信信道在多个站之间发送数字数据消息的系统。 数据消息被组合成包括地址和控制信息的数据分组。 然后，使用适当的数据代表波形或调制，通过公共信道从站发送数据分组。 接收并处理代表包括潜在的时间重叠数据分组的数据分组的复合波形以对至少一个分组进行解码。 代表所述至少一个解码分组的波形被重构并从所接收的复合波形中减去以获得残留波形。 然后进一步处理剩余波形以尝试对至少一个另外的分组进行解码。

公开(公告)号：US5715278A

公开(公告)日：1998-02-03

申请号：US479351

申请日：1995-06-07

申请人： Thomas M. Croft ,  Paul W. Dent ,  William J. Croughwell, III

发明人： Thomas M. Croft ,  Paul W. Dent ,  William J. Croughwell, III

IPC分类号： H04B1/16 ,  H04L1/00 ,  H04L1/08 ,  H04L7/033 ,  H04L7/04 ,  H04M19/08 ,  H04W52/02 ,  H04B3/46 ,  G06F11/00

CPC分类号： H04L7/048 ,  H04L1/0053 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/08 ,  H04M19/08 ,  H04W52/0216 ,  H04W52/0229 ,  H04W52/0235 ,  Y02B60/50

摘要： A method and system for increasing the probability of receiving a message in mobile communication systems. The invention uses a synchronization pattern to determine the location of an intended message. In addition, the invention uses the CRC check status of several sample timing positions spanning an expected message location to determine whether to accept a message. The expected message location is based on the sample timings of previous messages which are determined from a histogram of how frequently various sample timing positions have been selected in the past.

摘要翻译： 一种用于增加在移动通信系统中接收消息的概率的方法和系统。 本发明使用同步模式来确定预期消息的位置。 此外，本发明使用跨越预期消息位置的几个采样定时位置的CRC校验状态来确定是否接受消息。 期望的消息位置是基于从过去已经选择了各种采样定时位置的频率的直方图确定的先前消息的采样定时。

公开(公告)号：US5694433A

公开(公告)日：1997-12-02

申请号：US305729

申请日：1994-09-14

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H03F1/32 ,  H04L27/12 ,  H04K1/02

CPC分类号： H03F1/3223

摘要： A method and apparatus for producing amplified signals for communications having reduced adjacent channel energy involving generating a first signal having an undesired amount of adjacent channel energy, generating a second signal corresponding to the undesired amount of adjacent channel energy, and subtracting the second signal from the first signal to remove the undesired amount of adjacent channel energy. Several embodiments are disclosed.

摘要翻译： 一种用于产生用于通信的放大信号的方法和装置，具有减少的相邻信道能量，包括产生具有不期望量的相邻信道能量的第一信号，产生对应于不需要的相邻信道能量的第二信号，以及从 第一信号以消除不希望量的相邻信道能量。 公开了几个实施例。

公开(公告)号：US5668837A

公开(公告)日：1997-09-16

申请号：US383036

申请日：1995-02-03

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B1/26 ,  H03G5/24 ,  H04B1/10 ,  H04B1/16 ,  H04B1/40 ,  H04B7/12 ,  H04B7/185 ,  H04B7/26 ,  H03K9/00

CPC分类号： H04B1/0007 ,  H03G5/24 ,  H04B1/0003 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/1027 ,  H04B1/16 ,  H04B1/26 ,  H04B7/12 ,  H04B7/2646 ,  H04B1/406 ,  H04B2001/1054

摘要： A radio receiver for a radio operable in a radio communication system utilizing either a wideband standard such as GSM or a narrowband standard such as IS-54. The radio receiver has a wideband mode for demodulating wideband signals and a narrowband mode for demodulating narrowband signals. The radio receiver uses a wideband filter apparatus having a wide filter bandwidth adapted to the wideband signals for filtering both the wideband and narrowband signals. When in the narrowband mode, a digitizer digitizes the filtered signals containing the narrowband signal and produces digital signals having amplitude and phase signals corresponding to the filtered signals. A digital signal processor is used to frequency shift the digital signals so as to shift the narrowband signals to the center frequency of the wideband filter apparatus. The frequency-shifted narrowband signals are then filtered to select the centered narrowband signals and the narrowband signals are then demodulated. The digital signal processor is adapted to frequency-shift a plurality of different narrowband signals at different radio channel frequencies and to demodulated the different narrowband signals to provide for diversity combination.

摘要翻译： 一种用于无线电通信系统的无线电接收机，其利用诸如GSM的宽带标准或诸如IS-54的窄带标准。 无线电接收机具有用于解调宽带信号的宽带模式和用于解调窄带信号的窄带模式。 无线电接收机使用宽带滤波器装置，其具有适于宽带信号的宽滤波器带宽，以对宽带和窄带信号进行滤波。 当处于窄带模式时，数字化仪对包含窄带信号的滤波信号进行数字化，并产生具有对应于滤波信号的振幅和相位信号的数字信号。 数字信号处理器用于对数字信号进行频移，以将窄带信号移动到宽带滤波器装置的中心频率。 然后对频移窄带信号进行滤波以选择中心的窄带信号，然后解调窄带信号。 数字信号处理器适于在不同的无线电信道频率处频移多个不同的窄带信号，并且解调不同的窄带信号以提供分集组合。