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31. 发明授权

US5838267A Method and apparatus for encoding and decoding digital information 失效
标题翻译：用于对数字信息进行编码和解码的方法和装置
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。

32. 发明授权

US5812947A Cellular/satellite communications systems with improved frequency re-use 失效
标题翻译：蜂窝/卫星通信系统具有改进的频率重用
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。

33. 发明授权

US5764646A Packet data transmission with clash subtraction 失效
标题翻译：分组数据传输与冲突减法
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。

34. 发明授权

US5715278A Standby power saving in mobile phones 失效
标题翻译：待机节电手机
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。

35. 发明授权

US5694433A Efficient linear power amplification 失效
标题翻译：高效线性功率放大
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。

36. 发明授权

US5668837A Dual-mode radio receiver for receiving narrowband and wideband signals 失效
标题翻译：用于接收窄带和宽带信号的双模无线电接收机
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。

37. 发明授权

US5614904A Balance companded delta conversion for homodyne receiver 失效
标题翻译：零差接收机的平衡压缩增量转换
公开(公告)号：US5614904A
公开(公告)日：1997-03-25
申请号：US401124
申请日：1995-03-09
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H03M3/02 , H04L27/22 , H03M1/06
CPC分类号： H03M3/02
摘要： A balanced delta-modulation analog-to-digital conversion circuit is disclosed. A first principal integrator produces a first output signal which rises when a first control signal is generated and falls when a second control signal is generated. A second principal integrator produces a second output signal which fails when the first control signal is generated and rises when the second control signal is generated. The first and second control signals are then generated based upon the differences between the first and second output signals.
摘要翻译：公开了一种平衡的delta调制模数转换电路。第一主要积分器产生当产生第一控制信号时上升的第一输出信号，并且当产生第二控制信号时下降。第二主要积分器产生第二输出信号，其在产生第一控制信号时失效，并且当产生第二控制信号时上升。然后基于第一和第二输出信号之间的差异产生第一和第二控制信号。

38. 发明授权

US5594776A Efficient paging system 失效
标题翻译：高效的寻呼系统
公开(公告)号：US5594776A
公开(公告)日：1997-01-14
申请号：US305652
申请日：1994-09-14
申请人： Paul W. Dent
发明人： Paul W. Dent
IPC分类号： H04W52/02 , H04W68/00 , H04W68/02 , H04W68/08 , H04W88/18 , H04Q7/38
CPC分类号： H04W68/02 , H04W52/0216 , H04W52/0219 , H04W52/0248 , H04W68/08 , H04W88/185
摘要： A method for efficiently paging a mobile phone in a radio communication system having a plurality of mobile phones is disclosed. A first paging signal is transmitted for a mobile phone on a first try channel. If the mobile phone does not acknowledge the first paging signal within a predetermined period of time, the call is transferred to at least a second try channel. A second paging signal is then transmitted for the first mobile phone on at least the second channel.
摘要翻译：公开了一种在具有多个移动电话的无线电通信系统中有效地寻呼移动电话的方法。在第一尝试频道上为移动电话发送第一寻呼信号。如果移动电话在预定时间段内没有确认第一寻呼信号，则呼叫被转移到至少第二尝试信道。然后在至少第二信道上为第一移动电话发送第二寻呼信号。

39. 发明授权

US5577053A Method and apparatus for decoder optimization 失效
标题翻译：用于解码器优化的方法和装置
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

40. 发明授权

US5572552A Method and system for demodulation of downlink CDMA signals 失效
标题翻译：用于解调下行链路CDMA信号的方法和系统
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。

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