公开(公告)号：US5577053A

公开(公告)日：1996-11-19

申请号：US305730

申请日：1994-09-14

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H03M13/00 ,  H03M13/23 ,  H04L1/00 ,  H03M13/12

CPC分类号： H04L1/0057 ,  H03M13/00 ,  H03M13/23

摘要： In a communications system, a message to be transmitted is used to generate an error detection checkword. Both the message and checkword are encoded into a communication traffic signal using an error correction code. An error correction decoder decodes a received traffic signal, generating a plurality of candidate decoded signals and quantitative measurements of the reliability of the candidates. An error detection calculator tests the most reliable candidate for compliance between its decoded message and checkword. If there is compliance, that candidate and its decoded message are selected. If there is no compliance, the next most reliable candidate is tested for compliance, the selection process continuing until compliance is found. If no compliance is found among all the candidates, an error corrector scrutinizes the most reliable candidate for the presence of a correctable error, and the corrected candidate is re-tested for compliance. If there is still no compliance, the next most reliable candidate is scrutinized for the presence of a correctable error, and the corrected candidate is retested for compliance, the process continuing until compliance is found, up to the limits of the error correction capability of the error corrector.

摘要翻译： 在通信系统中，要发送的消息用于生成错误检测检查词。 消息和检查词都使用纠错码被编码成通信业务信号。 误差校正解码器对接收到的业务信号进行解码，产生多个候选解码信号，并对候选者的可靠性进行定量测量。 错误检测计算器测试其解码消息和检查词之间的最可靠候选者的符合性。 如果符合要求，则选择该候选者及其解码的消息。 如果没有遵守规定，则对下一个最可靠的候选人进行合规性测试，选择过程将持续到合规发现。 如果在所有候选人中没有发现符合性，则错误修正器会仔细检查最可靠的候选者是否存在可纠正的错误，并且更正的候选人被重新测试遵守。 如果仍然没有遵守规定，那么下一个最可靠的候选人将被检查是否存在可纠正的错误，并且修改后的候选人重新进行合规性，该过程将持续至合规性发现为止，直到错误纠正能力的限制 误差校正器

公开(公告)号：US5572552A

公开(公告)日：1996-11-05

申请号：US187062

申请日：1994-01-27

申请人： Paul W. Dent ,  Gregory E. Bottomley

发明人： Paul W. Dent ,  Gregory E. Bottomley

IPC分类号： H04B7/08 ,  H03D1/00 ,  H04B1/10

CPC分类号： H04B1/7097 ,  H04B7/0865

摘要： Demodulation of a CDMA downlink signal is performed by filtering correlations of the received signal with a known signature sequence. Unlike the conventional RAKE receiver, the filtering is not necessarily a FIR filter with coefficients equal to the conjugates of channel tap estimates. Instead, the present invention filters in such a way as to maximize the output signal-to-noise ratio, accounting for the fact that part of the noise comes from the same base station as the signal, so that it is colored by the same channel as the signal.

摘要翻译： 通过对接收到的信号与已知签名序列的相关性进行滤波来执行CDMA下行链路信号的解调。 与常规RAKE接收机不同，滤波不一定是具有等于信道抽头估计的共轭的系数的FIR滤波器。 相反，本发明以使得输出信噪比最大化的方式进行滤波，考虑到噪声的一部分来自与信号相同的基站的事实，使得它被相同信道着色 作为信号。

公开(公告)号：US5568088A

公开(公告)日：1996-10-22

申请号：US472247

申请日：1995-06-07

申请人： Paul W. Dent ,  Ross W. Lampe

发明人： Paul W. Dent ,  Ross W. Lampe

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

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

摘要： An amplifying apparatus for linearly amplifying a desired signal using a pair of coupled non-linear amplifiers is disclosed. The amplifying apparatus comprises a limiter for separating amplitude variations from the desired signal and producing a constant amplitude signal bearing the phase of the desired signal and an amplitude related signal. In addition, a drive signal generater produces two drive signals each dependent on the constant amplitude signal and the amplitude related signal such that each drive signal depends on the phase of the desired signal and such that the sum of the squares of the amplitudes of the drive signals is constant. Finally, a coupler couples the two drive signals to produce two constant amplitude signals for driving the pair of non-linear power amplifiers and for coupling the outputs of the power amplifiers to produce two amplified output signals, one of which is the linearly amplified desired signal and the other of which is a waste energy signal.

摘要翻译： 公开了一种使用一对耦合的非线性放大器线性放大所需信号的放大装置。 放大装置包括用于将振幅变化与期望信号分离并产生承载所需信号和振幅相关信号的相位的恒定振幅信号的限幅器。 此外，驱动信号发生器产生两个驱动信号，每个驱动信号依赖于恒定幅度信号和振幅相关信号，使得每个驱动信号取决于期望信号的相位，并且使得驱动器的振幅的平方和之和 信号是恒定的。 最后，耦合器将两个驱动信号耦合以产生两个恒定幅度信号，用于驱动一对非线性功率放大器并耦合功率放大器的输出以产生两个放大的输出信号，其中之一是线性放大的期望信号 另一个是废能信号。

公开(公告)号：US5535259A

公开(公告)日：1996-07-09

申请号：US412719

申请日：1995-03-29

申请人： Paul W. Dent ,  Jacobus C. Haartsen

发明人： Paul W. Dent ,  Jacobus C. Haartsen

IPC分类号： H04J3/00 ,  H04B15/00 ,  H04J3/16 ,  H04L12/28 ,  H04L12/56 ,  H04W12/06 ,  H04W16/16 ,  H04W16/32 ,  H04W28/26 ,  H04W74/08 ,  H04W84/14 ,  H04Q7/30 ,  H04Q7/22

CPC分类号： H04W16/16 ,  H04W12/06 ,  H04W74/006 ,  H04W16/32 ,  H04W28/26 ,  H04W74/0833 ,  H04W84/045 ,  H04W84/14

摘要： Transceiver frequency and optionally power level are allocated to a radio personal communications system which includes a base station connected to a wire telephone network and a cellular terminal operating within a region of a wide area cellular network to minimize interference between communications over the wide area cellular network and communications between the base station and the cellular terminal. The same cellular terminal may thus be used to communicate over the lower cost wire network when within range of the base station and over the wide area cellular network otherwise. The frequency for communications between the cellular terminal and the base station are optionally assigned by the operator of the wide area cellular network so appropriate frequencies and power levels can be assigned for base stations, to minimize same channel interference with the wide area cellular network.

公开(公告)号：US5530722A

公开(公告)日：1996-06-25

申请号：US305702

申请日：1994-09-14

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L27/18 ,  H03C1/54 ,  H03H1/02 ,  H03H7/06 ,  H03M3/02 ,  H04B1/26 ,  H04B1/40 ,  H04B7/26 ,  H04L25/03 ,  H04L27/00 ,  H04L27/20 ,  H04Q7/38 ,  H04L27/36

CPC分类号： H04B1/0039 ,  H03C1/542 ,  H03H1/02 ,  H03M3/024 ,  H04B1/0003 ,  H04B1/0014 ,  H04B1/0021 ,  H04B1/26 ,  H04B1/40 ,  H04L25/03834 ,  H04L27/2017 ,  H04L27/2064

摘要： A quadrature modulator for generation of complex modulated signals includes a unique pair of balanced, low-pass filters which, through a switching arrangement for switching into and out of the circuit distributed RC line sections and corresponding ground resistances are able to redress problems associated with manufacturing tolerances.

摘要翻译： 用于产生复调制信号的正交调制器包括一对平衡的低通滤波器，其通过用于切换和断开电路的分布式RC线路部分和相应的接地电阻的开关装置能够纠正与制造相关的问题 公差。

公开(公告)号：US5475705A

公开(公告)日：1995-12-12

申请号：US53860

申请日：1993-04-29

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L25/49 ,  H04L27/152 ,  H03D3/22 ,  H03M7/12 ,  H04L27/10

CPC分类号： H04L27/1525 ,  H04L25/4904

摘要： Binary signals that are transmitted by Manchester coding and frequency modulation are demodulated based on the behavior of the phase or complex vector value of the received signal. The polarities of the information bits may be determined by measuring the phase excursions in the middles of the Manchester symbols. A phase reference is established from a plurality of candidate phase references as a basis for comparison of the mid-symbol phase. The phase can be measured at the start-points and end-points of the symbols and averaged, or measured a plurality of times during each symbol period to generate a reference phase.

摘要翻译： 通过曼彻斯特编码和频率调制发送的二进制信号基于接收信号的相位或复矢量值的行为进行解调。 可以通过测量曼彻斯特符号的中间的相位偏移来确定信息比特的极性。 从多个候选相位基准建立相位基准，作为中间符号相位比较的基础。 可以在符号的起始点和终点处测量相位并在每个符号周期期间平均化或测量多次，以产生参考相位。

公开(公告)号：US5357454A

公开(公告)日：1994-10-18

申请号：US735805

申请日：1991-07-25

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： G06F17/14 ,  G06F15/40

CPC分类号： G06F17/145

摘要： A processor for generating a Walsh transform by substantially simultaneously calculating M combinations of M input values, wherein M=2.sup.N and the input values are two's-complement binary values, has N stages electrically connected in sequence, wherein each stage has a criss-cross network of M conductors electrically connected in a predetermined pattern to a set of M/2 butterflies, the butterflies having devices for calculating sums and differences of respective values presented by their respective criss-cross networks and presenting the sums and differences to respective conductors of the next stage's criss-cross network. The input values are presented to the criss-cross network of the first stage serially and least-significant-bit first, and substantially synchronously therewith, the Walsh transform of the input values is serially produced by the butterflies of the N-th stage.

摘要翻译： 一种用于通过基本上同时计算M个输入值的M个组合来生成沃尔什变换的处理器，其中M = 2N，并且输入值是二进制补码二进制值，其中N个级依次电连接，其中每个级具有交叉网络 的M个导体以预定图案电连接到一组M / 2蝴蝶，蝴蝶具有用于计算由它们各自的十字交叉网络呈现的相应值的和和差异的装置，并将和差和差值呈现给下一个 舞台的十字交叉网络。 输入值以第一级串联和最低有效位为前提，并与其大致同步地呈现给十字交叉网络，输入值的沃尔什变换由第N级的蝴蝶串联产生。

公开(公告)号：US5345598A

公开(公告)日：1994-09-06

申请号：US866554

申请日：1992-04-10

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B7/26 ,  H04B7/005

CPC分类号： H04W52/346 ,  H04W52/44 ,  Y02B60/50

摘要： Measurements of mobile signal strength received at the base station are used to determine the portion of power that should be transmitted by the base station to a particular mobile. Each of a plurality of mobiles measure the relative strength of the base station signal specifically intended for that mobile. The relative strength is compared to either the total base station signal power or to a cumulative ranking of the power of signals intended for other mobiles. That comparison is used to determine whether the mobile should increase or decrease its power.

摘要翻译： 使用在基站处接收的移动信号强度的测量来确定应由基站向特定移动台传输的功率部分。 多个移动台中的每一个测量专门针对该移动台的基站信号的相对强度。 将相对强度与总基站信号功率或旨在用于其他移动台的信号的功率的累积等级进行比较。 该比较用于确定移动应用是增加还是减少其功率。

公开(公告)号：US5276764A

公开(公告)日：1994-01-04

申请号：US713776

申请日：1991-06-12

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H03G7/08 ,  H03M3/02 ,  H04B1/64 ,  G10L3/02

CPC分类号： H04B1/64 ,  H03M3/022

摘要： A device and a method for processing an analog input signal (S) which varies widely in amplitude, such as speech, for the purpose of reducing the ratio of maximum to minimum amplitude variations of an output signal (P), after the processing, to the square root of the ratio existing before processing in order better to transmit said signal through a channel of restricted dynamic range in the presence of additive noise. The device comprises a converter (2) arranged to change the input signal (S) into a stream of integer numbers (N1,N2,N3 . . .). The numbers in the stream represent in some proportional way the instantaneous value of the input signal (S) divided by a reference voltage (R). This reference voltage (R) is generated by a smoothed amplitude measuring device (4) in proportion to the amplitude of the output signal (P) that is produced, when the number stream is reconverted to an analog signal waveform by means of a converter (6) working with a constant reference voltage. A device and a method for processing a signal of compressed amplitude variation, such as might be produced by the method and device described above, in order to produce a signal of amplitude variation restored to the normal range, being the square of the compressed range is also disclosed.

摘要翻译： 为了将处理之后的输出信号（P）的最大值与最小振幅变化的比率减小到处理之后的处理模拟输入信号（S）的装置和方法，该模拟输入信号（S）的幅度变化很大，例如语音， 在处理之前存在的比率的平方根，以便在存在加性噪声的情况下更好地通过受限动态范围的信道传输所述信号。 该装置包括转换器（2），其被设置为将输入信号（S）改变成整数（N1，N2，N3 ...）流。 流中的数字以一定比例的方式表示输入信号（S）的瞬时值除以参考电压（R）。 当通过转换器将数字流重新转换为模拟信号波形时，该参考电压（R）由平滑的幅度测量装置（4）产生，与产生的输出信号（P）的幅度成比例 6）使用恒定的参考电压。 为了产生恢复到作为压缩范围的平方的正常范围的幅度变化的信号，可以通过上述方法和装置产生压缩振幅变化信号的装置和方法， 也披露。

公开(公告)号：US5241702A

公开(公告)日：1993-08-31

申请号：US578251

申请日：1990-09-06

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04L27/38 ,  H03D3/00 ,  H03D7/16 ,  H04B1/30 ,  H04L7/04 ,  H04L25/06 ,  H04L27/22

CPC分类号： H04L25/062 ,  H03D3/008 ,  H04B1/30 ,  H03D2200/0047 ,  H03D2200/0082 ,  H03D2200/009 ,  H03D7/165 ,  H04L7/046

摘要： A zero-IF radio receiver eliminates DC offset without distortion or loss of the low-frequency and DC components of the received or desired signal by initially differentiating the received signal to filter out the DC offset. The signal is amplified to a suitable level and then integrated to recapture the original DC and low frequency signal components. The integration essentially restores the filtered components to the original value in the amplified signal using an arbitrary constant of integration of bounded magnitude to generate a restored signal. Using various techniques that exploit predetermined signal patterns or inherent signal properties of the desired signal, the DC offset can be reasonably estimated. The DC offset estimate is then subtracted out of the restored signal leaving the amplified, received signal substantially free from distortion. An advantageous method for differentiating and digitizing the received, signal uses the technique of companded delta modulation.