专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5214675A System and method for calculating channel gain and noise variance of a communication channel 失效
标题翻译：用于计算通信信道的通道增益和噪声变化的系统和方法
公开(公告)号：US5214675A
公开(公告)日：1993-05-25
申请号：US724663
申请日：1991-07-02
申请人： Bruce D. Mueller , Kevin L. Baum , David E. Borth , Phillip D. Rasky , Eric H. Winter
发明人： Bruce D. Mueller , Kevin L. Baum , David E. Borth , Phillip D. Rasky , Eric H. Winter
IPC分类号： H04B3/04 , H04B7/00 , H04B7/005 , H04B7/08 , H04L1/02 , H04L25/06 , H04L27/01 , H04L27/22
CPC分类号： H04L27/22 , H04B7/0845 , H04L25/067
摘要： A system and method for correcting for Rayleigh interference of a signal transmitted upon a multi-path channel. The system adaptively calculates values of channel gain and noise variance of the channel upon which the signal is transmitted, and generates signals indicative of such calculations which are supplied to a decoder. The system may be utilized to form a portion of a coherent, or noncoherent receiver which receives encoded and differentially-encoded signals.
摘要翻译：一种用于校正在多路径信道上发送的信号的瑞利干扰的系统和方法。系统自适应地计算发送信号的信道的信道增益和噪声方差的值，并产生指示这样的计算的信号，这些信号被提供给解码器。该系统可以用于形成接收编码和差分编码的信号的相干或非相干接收机的一部分。

2. 发明授权

US5233632A Communication system receiver apparatus and method for fast carrier acquisition 失效
标题翻译：用于快速载波采集的通信系统接收机装置和方法
公开(公告)号：US5233632A
公开(公告)日：1993-08-03
申请号：US698765
申请日：1991-05-10
申请人： Kevin L. Baum , David E. Borth , Phillip D. Rasky
发明人： Kevin L. Baum , David E. Borth , Phillip D. Rasky
IPC分类号： H04B1/30
CPC分类号： H04B1/30
摘要： A communications system receiver (100) is disclosed which receives a transmitted signal over a radio channel. The transmitted signal includes data and a predetermined synchronization sequence. The receiver (100) includes a demodulator (215), and a stored replica (207) of the predetermined synchronization sequence. The receiver (100) further includes apparatus (102) for computing (308) a reconstructed signal, by using the channel impulse response characteristic and the stored replica (207) of the synchronization sequence. A feature of the invention is to estimate (310) a phase offset value between an incoming signal and the reconstructed signal, for a plurality of synchronization symbols. This serves to establish (315) a relationship between the phase offset and a synchronization symbol index. The receiver then employs this relationship to derive (317) at least one "previous" phase state (214) for initializing (314) the demodulator (215).
摘要翻译：公开了一种通过无线电信道接收发射信号的通信系统接收机（100）。所发送的信号包括数据和预定的同步序列。接收器（100）包括解调器（215）和预定同步序列的存储副本（207）。接收器（100）还包括用于通过使用信道脉冲响应特性和存储的同步序列副本（207）来计算（308）重构信号的装置（102）。本发明的一个特征是针对多个同步符号来估计（310）输入信号和重构信号之间的相位偏移值。这用于建立（315）相位偏移和同步符号索引之间的关系。接收机然后采用这种关系来导出（317）用于初始化（314）解调器（215）的至少一个“先前”相位状态（214）。

3. 发明授权

US5379324A System and method for calculating channel gain and noise variance of a communication channel 失效
标题翻译：用于计算通信信道的信道增益和噪声方差的系统和方法
公开(公告)号：US5379324A
公开(公告)日：1995-01-03
申请号：US008249
申请日：1993-01-25
申请人： Bruce D. Mueller , Kevin L. Baum , David E. Borth , Phillip D. Rasky , Eric H. Winter
发明人： Bruce D. Mueller , Kevin L. Baum , David E. Borth , Phillip D. Rasky , Eric H. Winter
IPC分类号： H04B3/04 , H04B7/00 , H04B7/005 , H04B7/08 , H04L1/02 , H04L25/06 , H04L27/01 , H04L27/22 , H04L27/06
CPC分类号： H04L27/22 , H04B7/0845 , H04L25/067
摘要： A system and method for correcting for Rayleigh interference of a signal transmitted upon a multi-path channel. The system adaptively calculates values of channel gain and noise variance of the channel upon which the signal is transmitted, and generates signals indicative of such calculations which are supplied to a decoder. The system may be utilized to form a portion of a coherent, or noncoherent receiver which receives encoded and differentially-encoded signals.
摘要翻译：一种用于校正在多路径信道上发送的信号的瑞利干扰的系统和方法。系统自适应地计算发送信号的信道的信道增益和噪声方差的值，并产生指示这样的计算的信号，这些信号被提供给解码器。该系统可以用于形成接收编码和差分编码的信号的相干或非相干接收机的一部分。

4. 发明授权

US5574973A Method of registering/-reassigning a call in a dual mode communication network 失效
标题翻译：在双模式通信网络中注册/重新分配呼叫的方法
公开(公告)号：US5574973A
公开(公告)日：1996-11-12
申请号：US405572
申请日：1995-03-16
申请人： David E. Borth , John R. Haug , Phillip D. Rasky
发明人： David E. Borth , John R. Haug , Phillip D. Rasky
IPC分类号： H04W36/14 , H04W36/30 , H04W48/18 , H04W60/00 , H04W76/04 , H04W92/02 , H04Q7/22
CPC分类号： H04W60/00 , H04W36/14 , H04W36/30 , H04W48/18 , H04W76/04 , H04W92/02
摘要： Registration operates by sensing (106) the availability of a first communication system. A quality factor of a channel of the system is measured (111). A channel of the first system is selected if the quality factor of the channel exceeds a threshold (113). If selected, the subscriber attempts to register the call (114). If the registration fails, the availability of a second communication system is sensed (107). A quality factor of a channel of the second system is measured (111) and selected (113), if the quality factor exceeds a threshold. The subscriber will then attempt to register (114) with the second system. Reassignment operates by determining if the first system has reached a capacity limit (126). If it has, it determines if a channel on the second system is available (128). If available, a transfer of the call from the first to the second system will be attempted (132).
摘要翻译：注册通过感测（106）第一通信系统的可用性来进行操作。测量系统通道的品质因数（111）。如果信道的质量因子超过阈值（113），则选择第一系统的信道。如果选择，则用户尝试注册呼叫（114）。如果注册失败，则感测到第二通信系统的可用性（107）。如果质量因子超过阈值，则测量（111）并选择（113）第二系统的通道的品质因数。然后用户将尝试用第二个系统注册（114）。通过确定第一个系统是否已达到容量限制来进行重新分配（126）。如果有，它确定第二个系统上的通道是否可用（128）。如果可用，将尝试从第一个系统到第二个系统的呼叫转移（132）。

5. 发明授权

US5381443A Method and apparatus for frequency hopping a signalling channel in a communication system 失效
标题翻译：用于在通信系统中跳频信令信道的方法和装置
公开(公告)号：US5381443A
公开(公告)日：1995-01-10
申请号：US955793
申请日：1992-10-02
申请人： David E. Borth , John R. Haug , Phillip D. Rasky
发明人： David E. Borth , John R. Haug , Phillip D. Rasky
IPC分类号： H04B7/26 , H04W74/04 , H04L27/30
CPC分类号： H04B7/2643 , H04W74/002
摘要： A cellular communication system hops both signalling channels and traffics channels in a common hopping sequence. To obtain system information from the frequency hopping signalling channel, a subscriber unit waits on a predetermined frequency, or carrier, until the frequency hopped signalling channel arrives at the predetermined frequency. Once arrived, the subscriber unit obtains synchronization information, and information related to the hopping sequence, from the signalling channel during the hop. The subscriber unit may then hop in tandem with the system, obtaining further system information in subsequent hops. The cellular communication system supports mobile assisted handoff (MAHO) by allowing a subscriber unit to measure signalling channel of neighboring cells in a similar manner, and using the measurements to assist in communication handoff from a source cell to a neighboring cell.
摘要翻译：蜂窝通信系统在公共跳频序列中跳过信令信道和业务信道。为了从跳频信令信道获得系统信息，用户单元等待预定频率或载波，直到跳频信令信道到达预定频率。一旦到达，用户单元在跳跃期间从信令信道获得同步信息和与跳频序列相关的信息。用户单元然后可以与系统一起跳转，在随后的跳数中获得进一步的系统信息。蜂窝通信系统通过允许用户单元以类似的方式测量相邻小区的信令信道，并且使用这些测量来帮助从源小区到相邻小区的通信切换来支持移动辅助切换（MAHO）。

6. 发明授权

US5737327A Method and apparatus for demodulation and power control bit detection in a spread spectrum communication system 失效
标题翻译：扩频通信系统中解调和功率控制位检测的方法和装置
公开(公告)号：US5737327A
公开(公告)日：1998-04-07
申请号：US624329
申请日：1996-03-29
申请人： Fuyun Ling , David E. Borth , Colin D. Frank , Phillip D. Rasky , James F. Kepler
发明人： Fuyun Ling , David E. Borth , Colin D. Frank , Phillip D. Rasky , James F. Kepler
IPC分类号： H04B1/707 , H04B7/005 , H04B7/26 , H04J11/00 , H04J13/00 , H04L25/02 , H04J13/04 , H04Q7/20
CPC分类号： H04W52/60 , H04B1/707 , H04J13/00 , H04L25/0214 , H04W52/42 , H04L25/0226
摘要： A receiver circuit (400, 500) receives a spread spectrum communication signal, such as a DS-CDMA signal, including a pilot channel and including a power control designator. The signal is despread and decoded. The pilot symbols on the pilot channel are provided to a channel estimator (408) for estimating the channel phase and channel gain of the communication channel. This estimate is provided to a demodulator (422) for demodulating the traffic channel symbols. The pilot symbols are provided to another channel estimator (410) for estimating channel phase and channel gain for the power control designator. This estimate is provided to a demodulator (424) for demodulating the power control designator. The traffic channel symbols are delayed a predetermined time in a delay element (420) before demodulating. The power control designator is delayed a short time or not at all in a short delay element (418) before demodulation.
摘要翻译：接收机电路（400,500）接收包括导频信道并包括功率控制指示符的扩频通信信号，例如DS-CDMA信号。信号被解扩和解码。导频信道上的导频符号被提供给用于估计通信信道的信道相位和信道增益的信道估计器（408）。该估计被提供给用于解调业务信道符号的解调器（422）。导频符号被提供给用于估计功率控制指示符的信道相位和信道增益的另一信道估计器（410）。该估计被提供给用于解调功率控制指示符的解调器（424）。业务信道符号在解调之前延迟延迟元件（420）中的预定时间。在解调之前，功率控制指示符在短时间内延迟短暂的延迟元件（418）。

7. 发明授权

US5392300A Dual mode radio communication unit 失效
标题翻译：双模无线电通信单元
公开(公告)号：US5392300A
公开(公告)日：1995-02-21
申请号：US973896
申请日：1992-11-10
申请人： David E. Borth , John R. Haug , Phillip D. Rasky , Gregory M. Chiasson
发明人： David E. Borth , John R. Haug , Phillip D. Rasky , Gregory M. Chiasson
IPC分类号： H03M13/33 , H04B1/40 , H04L1/00 , H04L7/04 , G06F11/10
CPC分类号： H04L1/0059 , H03M13/33 , H04B1/406 , H04L1/0054 , H04L7/04
摘要： A dual mode radio communication unit for a digital communication system is provided having an error controller including an error detection encoder and a forward error correction encoder which encode an input information signal into an error protected data bit stream. In addition, the communication unit includes a mode selector which enables either the error detection encoder or the forward error correction encoder used with a particular mode of operation of the communication unit. Further, a corresponding dual mode radio communication unit is provided having an error controller for generating estimated information signal samples according to a group of algorithms consisting of either an error detection algorithm or an error correction algorithm. In addition, the corresponding communication unit includes a mode selector for receiving a signal according to a particular one of the group of algorithms which is associated with a particular mode of operation of the corresponding communication unit.
摘要翻译：提供了一种用于数字通信系统的双模无线电通信单元，其具有错误控制器，该误差控制器包括将输入信息信号编码为错误保护数据位流的错误检测编码器和前向纠错编码器。此外，通信单元包括模式选择器，其能够使得与通信单元的特定操作模式一起使用的错误检测编码器或前向纠错编码器。此外，提供了相应的双模式无线电通信单元，其具有用于根据由错误检测算法或纠错算法组成的一组算法来产生估计信息信号样本的误差控制器。此外，相应的通信单元包括模式选择器，用于根据与对应的通信单元的特定操作模式相关联的算法组中的特定一个来接收信号。

8. 发明授权

US5142551A Signal weighting system for digital receiver 失效
标题翻译：用于数字接收机的信号称重系统
公开(公告)号：US5142551A
公开(公告)日：1992-08-25
申请号：US662049
申请日：1991-02-28
申请人： David E. Borth , Phillip D. Rasky , Fuyun Ling , M. Vedat Eyuboglu
发明人： David E. Borth , Phillip D. Rasky , Fuyun Ling , M. Vedat Eyuboglu
IPC分类号： H03H15/00 , H03H17/00 , H03H21/00 , H03M13/00 , H03M13/23 , H04B1/10 , H04B1/12 , H04B3/14 , H04B7/005
CPC分类号： H03M13/00 , H04B7/005
摘要： A signal weighting system for associating a confidence level with portions of a communication signal transmitted upon a multipath channel and received by a receiver. A signal received by the receiver is equalized by an equalizer circuit, such as a maximum likelihood sequence estimator, and the equalized signal generated thereby is supplied to an adaptive filter which is synthesizes portions of the multipath channel. The signal received by the receiver is altered responsive to values of a filtered, equalized signal generated by the adaptive filter.
摘要翻译：一种信号加权系统，用于将置信水平与在多路径信道上发送并由接收机接收的通信信号的部分相关联。由接收机接收到的信号由诸如最大似然序列估计器的均衡器电路均衡，并且由此生成的均衡信号被提供给合成多径信道的部分的自适应滤波器。响应于由自适应滤波器产生的经滤波的均衡信号的值，接收机接收到的信号被改变。

9. 发明授权

US5546429A Frequency hopping code division multiple access radio communication unit 失效
标题翻译：跳频码分多址无线电通信单元
公开(公告)号：US5546429A
公开(公告)日：1996-08-13
申请号：US973352
申请日：1992-11-09
申请人： Gregory M. Chiasson , Phillip D. Rasky , Kevin L. Baum
发明人： Gregory M. Chiasson , Phillip D. Rasky , Kevin L. Baum
IPC分类号： H04B1/7136 , H04B1/715 , H04B7/26 , H04L1/00 , H04L27/06
CPC分类号： H04B1/715 , H04B7/2634 , H04L1/0054 , H04L1/0059 , H04B2001/71365 , H04B2001/7152
摘要： A radio communication unit for a digital communication system is provided in which an input information signal is protected from transmission errors by forward error correction encoding the information signal. In addition, the communication unit enhances subsequent processing of a transmitted form of the information signal by a hard-limiting receiver by inserting a predetermined synchronization sequence into the information signal. Further, a corresponding radio communication unit is provided which includes a hard limiting mechanism for removing the magnitude of each sample in a group of data samples of a signal received from over a radio communication channel. In addition, weighting coefficients of the hard-limited group of data samples for maximum likelihood decoding and diversity combining are generated by comparing the hard-limited group of data samples to a known predetermined synchronization sequence. Finally, estimated information samples are generated, utilizing the weighting coefficients, by maximum-likelihood decoding the group of data samples.
摘要翻译：提供了一种用于数字通信系统的无线电通信单元，其中通过对信息信号进行前向纠错编码来保护输入信息信号不受传输错误的影响。此外，通信单元通过将预定的同步序列插入到信息信号中，通过硬限制接收机增强对发送形式的信息信号的后续处理。此外，提供了相应的无线电通信单元，其包括用于去除从无线电通信信道接收的信号的一组数据样本中的每个样本的幅度的硬限制机制。此外，通过将硬限制的数据样本组与已知的预定同步序列进行比较来生成用于最大似然解码和分集组合的硬限制数据样本组的加权系数。最后，利用加权系数，通过最大似然解码数据样本组来生成估计信息样本。

10. 发明授权

US6157632A Low complexity protocol method device and system robust in the presence of bursted 失效
标题翻译：低复杂度的协议方法设备和系统在存在突发干扰的情况下鲁棒
公开(公告)号：US6157632A
公开(公告)日：2000-12-05
申请号：US893332
申请日：1997-07-16
申请人： Mark C. Cudak , James R. Kelton , Phillip D. Rasky , Bruce D. Mueller , Kadathur S. Natarajan
发明人： Mark C. Cudak , James R. Kelton , Phillip D. Rasky , Bruce D. Mueller , Kadathur S. Natarajan
IPC分类号： H04L1/18 , H04L12/56 , H04J3/00 , H04B7/212
CPC分类号： H04W28/06 , H04L1/1809 , H04L1/1887 , H04W16/14
摘要： The present invention provides a method/protocol (400, 800) and device (600; 700) for transmitting a synchronous stream of information, in a wireless, centrally controlled communication system. The method includes the steps of parsing the synchronous stream of information into a plurality of predetermined fixed sized blocks and transmitting/retransmitting each fixed size block in a predetermined window of time until one of: reception of each fixed size block is positively acknowledged and each corresponding predetermined window of time has elapsed.
摘要翻译：本发明提供了一种用于在无线中央控制的通信系统中发送同步信息流的方法/协议（400,800）和设备（600; 700）。该方法包括以下步骤：将信息的同步流解析成多个预定的固定大小的块，并在预定的时间窗口中发送/重传每个固定大小的块，直到每个固定大小块的接收被肯定地确认，并且每个对应预定的时间窗已经过去了。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式