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41. 发明授权

US5535259A Radio personal communications system and method for allocating frequencies for communications between a cellular terminal and a base station 失效
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.

42. 发明授权

US5530722A Quadrature modulator with integrated distributed RC filters 失效
标题翻译：具有集成分布式RC滤波器的正交调制器
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。

43. 发明授权

US5475705A Demodulator for Manchester-coded FM signals 失效
标题翻译：解调器用于曼彻斯特编码的FM信号
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。

44. 发明授权

US5357454A Fast walsh transform processor 失效
标题翻译：快速沃尔什变换处理器
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。

45. 发明授权

US5345598A Duplex power control system in a communication network 失效
标题翻译：通信网络中的双工电源控制系统
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。

46. 发明授权

US5276764A Method and device for compressing and expanding an analog signal 失效
标题翻译：用于压缩和扩展模拟信号的方法和装置
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。

47. 发明授权

US5241702A D.C. offset compensation in a radio receiver 失效
标题翻译：无线电接收器的偏差补偿
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.

48. 发明授权

US5239557A Discountinuous CDMA reception 失效
标题翻译：优惠CDMA接收
公开(公告)号：US5239557A
公开(公告)日：1993-08-24
申请号：US866555
申请日：1992-04-10
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H04B1/7075 , H04J11/00 , H04L7/00 , H04Q7/38
CPC分类号： H04B1/70755 , H04L7/0083
摘要： A cellular radio telephone system employs discontinuous transmission and reception of speech signals to conserve receiver processing resources. A frame structure is imposed on digitized speech data to divide the data into units of fixed transmission time. When no active speech is present for the entire duration of a frame, transmission of that frame of data is inhibited. At the receiver, decoding of received bits is performed to determine correlation with a defined set of code words. If no correlation is found after the first few received bits of a frame, due to the absence of active speech data, decoding is discontinued for the remainder of the frame's duration. This approach frees up the receiver's resources for other tasks, such as decoding of other received signals. Frames of data from different sources are transmitted with a defined time alignment to enable the receiver to remain synchronized in the absence of transmitted data. The frames associated with different sources are staggered relative to one another, to distribute processing loads at the receiver.

49. 发明授权

US5187675A Maximum search circuit 失效
标题翻译：最大搜索电路
公开(公告)号：US5187675A
公开(公告)日：1993-02-16
申请号：US761380
申请日：1991-09-18
申请人： Paul W. Dent , Jaap C. Haartsen
发明人： Paul W. Dent , Jaap C. Haartsen
IPC分类号： G06F7/02 , G06F7/22 , G06F7/38
CPC分类号： G06F9/30021 , G06F7/026 , G06F7/22
摘要： An electronic comparator for selecting and outputting the larger of first and second electrical, binary-coded input values presented bit-serially, most-significant-bit first, has first and second input terminals; a logical exclusive-OR gate; a first resettable flip-flop; a second flip-flop; and a device for selecting one of the input values as an output of the comparator. In a second embodiment, the electronic comparator has first and second input terminals; a logical exclusive-OR gate; a first flip-flop synchronized with a train of bitclock pulses; a second resettable flip-flop; a third flip-flop; and a device for selecting one of the input values as an output of the comparator. Devices for generating traceback signals indicating which input values were selected and a signal indicating that the maximum value has been identified are also disclosed.
摘要翻译：电子比较器用于选择和输出第一和第二电子二进制编码的输入值中较大的第二和第二输入端，其中，第一和第二输入端有位串行，最高有效位。逻辑异或门; 第一个可复位触发器; 第二个触发器以及用于选择输入值之一作为比较器的输出的装置。在第二实施例中，电子比较器具有第一和第二输入端; 逻辑异或门; 与一串比特时钟脉冲同步的第一个触发器; 第二可复位触发器; 第三个触发器以及用于选择输入值之一作为比较器的输出的装置。还公开了用于产生指示哪些输入值被选择的回溯信号的装置和指示已经识别出最大值的信号。

50. 发明授权

US08401487B2 Radio channel analyzer to determine doppler shifts across multiple frequencies of a wideband signal 有权
标题翻译：无线电频道分析仪确定宽带信号的多个频率上的多普勒频移
公开(公告)号：US08401487B2
公开(公告)日：2013-03-19
申请号：US12650201
申请日：2009-12-30
申请人： Paul W. Dent , Leonid Krasny
发明人： Paul W. Dent , Leonid Krasny
IPC分类号： H04B17/00
CPC分类号： H04L25/022 , H04L25/0222 , H04L25/0232
摘要： A receiver and receive processing method described herein improves the accuracy of channel estimates by correcting for the assumption that the Doppler shift (or rate-of-change-of-delay) stays constant for each frequency within a signal bandwidth of a received signal. To that end, a receiver according to the present invention comprises a channel processor having multiple processing units. A first processing unit processes reference values (e.g., pilot signals) received for each of a plurality of frequencies within a signal bandwidth at a plurality of different signal times (or the complex propagation channel coefficients estimated therefrom) to determine a set of complex wave amplitudes either for each of multiple frequencies in the signal bandwidth or for each of the different signal times. A second processing unit subsequently processes the complex wave amplitudes to determine complex scattering coefficients, where each complex scattering coefficient corresponds to a respective scattering object in the wireless communication channel.
摘要翻译：本文描述的接收机和接收处理方法通过校正多普勒频移（或延迟变化率）在接收信号的信号带宽内对于每个频率保持恒定的假设来提高信道估计的精度。为此，根据本发明的接收机包括具有多个处理单元的信道处理器。第一处理单元处理在多个不同信号时间（或从其估计的复数传播信道系数）内在信号带宽内的多个频率中的每一个接收的参考值（例如，导频信号），以确定一组复波幅度对于信号带宽中的多个频率中的每一个或针对不同信号时间的每一个，第二处理单元随后处理复波幅度以确定复散射系数，其中每个复散射系数对应于无线通信信道中的相应散射物体。

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