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31. 发明授权

US07471734B2 Space-time transmit diversity scheme for time-dispersive propagation media 有权
标题翻译：时间分散传播介质的时空发射分集方案
公开(公告)号：US07471734B2
公开(公告)日：2008-12-30
申请号：US10131429
申请日：2002-04-24
申请人： Joseph Thomas , Steven C. Jasper , James P. Michels
发明人： Joseph Thomas , Steven C. Jasper , James P. Michels
IPC分类号： H04L27/00
CPC分类号： H04L1/0618 , H04L25/03178 , H04L2025/03375 , H04L2025/03477 , H04L2025/03796
摘要： This invention extends Alamouti's scheme for wideband TDMA systems; it then works in conjunction with time-domain equalization. In fact, the present invention envisages time-domain DFE or MLSE equalization (which is more robust than linear frequency-domain equalization) via the use of a training mid-amble to separate adjacent sub-blocks; this mid-amble is used in equalizer training and its direct and inter-symbol interference contributions to the received signal, are subtractively eliminated to facilitate the detection process itself. This approach may be applied to all systems in time-dispersive propagation media, where the burst or slot length is short enough that the fading can be considered time-invariant over its duration.
摘要翻译：本发明扩展了用于宽带TDMA系统的Alamouti方案; 然后它与时域均衡结合起来。事实上，本发明设想通过使用训练中间码来分离相邻子块的时域DFE或MLSE均衡（其比线性频域均衡更鲁棒）; 这种中间码头被用于均衡器训练，并且对接收信号的直接和符号间干扰贡献被减去，以便于检测过程本身。这种方法可以应用于时分散传播介质中的所有系统，其中突发或时隙长度足够短，使得衰落在其持续时间内被认为是时间不变的。

32. 发明授权

US07257171B2 Method and apparatus for reference symbol aided channel estimation 有权
标题翻译：参考符号辅助信道估计的方法和装置
公开(公告)号：US07257171B2
公开(公告)日：2007-08-14
申请号：US11098208
申请日：2005-04-04
申请人： Steven C. Jasper , Robert J. Corke , Colin D. Frank , Isam R. Makhlouf
发明人： Steven C. Jasper , Robert J. Corke , Colin D. Frank , Isam R. Makhlouf
IPC分类号： H04L27/06 , H04B1/10
CPC分类号： H04L25/0224 , H04L27/2647
摘要： A system that includes a receiver (100) that is configured for: selecting (210) a set of demodulator output samples and a corresponding set of reference symbols; generating (220) a set of raw channel estimates based on the set of demodulator output samples and the corresponding set of reference symbols; subdividing (230) the set of raw channel estimates into a plurality of subsets; assigning and applying (240) a corresponding reference symbol magnitude quantization scheme to each subset; determining (250) a set of filter coefficients that is based on the quantization schemes applied to the subsets of raw channel estimates; and combining (260) the set of raw channel estimates with the set of filter coefficients to generate a channel estimate.
摘要翻译：一种包括接收机（100）的系统，其被配置为：选择（210）一组解调器输出采样和相应的一组参考符号; 基于所述解调器输出样本集合和相应的参考符号集合来生成（220）一组原始信道估计; 将所述原始信道估计集合（230）细分为多个子集; 向每个子集分配和应用（240）对应的参考符号量化量化方案; 确定（250）基于应用于原始信道估计的子集的量化方案的一组滤波器系数; 以及将所述原始信道估计集合与所述滤波器系数集合（260）以生成信道估计。

33. 发明授权

US07126929B2 Antenna method and apparatus 有权
标题翻译：天线方法和装置
公开(公告)号：US07126929B2
公开(公告)日：2006-10-24
申请号：US10329746
申请日：2002-12-26
申请人： William J. Turney , Steven C. Jasper
发明人： William J. Turney , Steven C. Jasper
IPC分类号： H04B1/38 , H04M1/00
CPC分类号： H01Q9/16
摘要： A wireless communication unit provides (10) a first signal as received from a first portion (11) of a single antenna and provides (13) a second signal as received from a second portion of the antenna, which in a preferred embodiment can comprise a feedline (12). The two signals contain information that is cross-coupled with respect to one another as a function, at least in part, of the structure of the antenna. A digital processing platform (34) de-couples (17) these signals to permit recovery of the original payloads. In one embodiment similar approaches are used to facilitate cross-coupling of signals and transmission of such cross-coupled signals from different portions of a single antenna structure. In another embodiment, both transmission and reception are facilitated by a common platform.
摘要翻译：无线通信单元提供（10）从单个天线的第一部分（11）接收的第一信号，并且提供（13）从天线的第二部分接收的第二信号，其在优选实施例中可以包括馈线（12）。这两个信号包含至少部分由天线的结构相互交叉耦合的信息。数字处理平台（34）解耦（17）这些信号以允许恢复原始有效载荷。在一个实施例中，类似的方法用于促进信号的交叉耦合和来自单个天线结构的不同部分的这种交叉耦合信号的传输。在另一个实施例中，传输和接收均由通用平台促成。

34. 发明授权

US5440582A Method and apparatus for determining signal usability 失效
标题翻译：用于确定信号可用性的方法和装置
公开(公告)号：US5440582A
公开(公告)日：1995-08-08
申请号：US69927
申请日：1993-05-28
申请人： Mark A. Birchler , Steven C. Jasper , Timothy J. Wilson
发明人： Mark A. Birchler , Steven C. Jasper , Timothy J. Wilson
IPC分类号： H04J1/16 , G01R29/26 , H04B1/10 , H04B17/00 , H04J3/14 , H04L27/18 , H04Q1/20 , H04B3/46
CPC分类号： H04B17/20
摘要： A receiver that receives a stream of information symbols may detect the usability of the stream of information symbols received as follows. Upon receiving the stream of information symbols, the receiver separates the stream of information symbols into a desired portion and an undesired portion wherein the desired portion is the originally transmitted stream of information symbols and the undesired portion is interference and noise. From the undesired portion and the desired portion, the usability can be determined based on a ratio of the two portions.
摘要翻译：接收信息符号流的接收机可以如下检测所接收的信息符号流的可用性。在接收到信息符号流之后，接收机将信息符号流分离成期望的部分和不需要的部分，其中所需部分是最初发送的信息符号流，而不期望的部分是干扰和噪声。从不需要的部分和期望的部分，可以基于两个部分的比例来确定可用性。

35. 发明授权

US5406588A Method and apparatus for mitigating distortion effects in the determination of signal usability 失效
标题翻译：用于在确定信号可用性时减轻失真效应的方法和装置
公开(公告)号：US5406588A
公开(公告)日：1995-04-11
申请号：US69947
申请日：1993-05-28
申请人： Mark A. Birchler , Steven C. Jasper , Timothy J. Wilson
发明人： Mark A. Birchler , Steven C. Jasper , Timothy J. Wilson
IPC分类号： H04L27/38 , H03B1/04 , H04B1/10 , H04B7/005 , H04B17/00 , H04L1/20 , H03D1/04 , H04L1/00
CPC分类号： H04L1/20 , H04B1/1027 , H04B17/20
摘要： A receiver may reduce the effects of distortion when determining signal usability in the following manner. Upon receiving a signal, the receiver separates a desired component, an undesired component, and a distortion component, wherein the desired component includes the signal that was originally transmitted and the undesired component includes interference and noise. Having isolated the distortion component, it can be mitigated such that the usability of the signal received can be determined based on a ratio between the desired and undesired components.
摘要翻译：当以下列方式确定信号可用性时，接收机可以减小失真的影响。在接收到信号时，接收机分离出期望的分量，不期望的分量和失真分量，其中期望的分量包括最初传输的信号，并且不需要的分量包括干扰和噪声。在分离了失真分量之后，可以减轻所接收的信号的可用性，这样就可以基于期望的和不期望的分量之间的比率来确定。

36. 发明授权

US5396656A Method for determining desired components of quadrature modulated signals 失效
标题翻译：用于确定正交调制信号的期望分量的方法
公开(公告)号：US5396656A
公开(公告)日：1995-03-07
申请号：US116174
申请日：1993-09-02
申请人： Steven C. Jasper , Mark A. Birchler
发明人： Steven C. Jasper , Mark A. Birchler
IPC分类号： H03D3/00 , H03D7/16 , H04B1/10 , H04B7/005 , H04B1/16
CPC分类号： H03D3/009 , H04B1/1027 , H04B7/005 , H03D2200/005 , H03D2200/0092 , H03D7/165
摘要： In the following manner, a receiver that receives quadrature modulated signals may determine desired components of the quadrature modulated signals by minimizing effects of transmitted distortion produced by gain, phase, or gain-phase imbalance. A quadrature modulated signal that includes a desired component, a fading component, and a transmitter distortion component is received by the receiver, wherein the transmitter distortion component includes a conjugate component and an imbalance component. The receiver estimates the fading component, the conjugate component, and the imbalance component and determines the desired component based on these estimates and the quadrature modulated signal.
摘要翻译：以下述方式，接收正交调制信号的接收机可以通过最小化由增益，相位或增益相位不平衡产生的发送失真的影响来确定正交调制信号的期望分量。包括所需分量，衰落分量和发射机失真分量的正交调制信号由接收机接收，其中发射机失真分量包括共轭分量和不平衡分量。接收机估计衰落分量，共轭分量和不平衡分量，并且基于这些估计和正交调制信号确定期望分量。

37. 发明授权

US5343499A Quadrature amplitude modulation synchronization method 失效
标题翻译：正交幅度调制同步方法
公开(公告)号：US5343499A
公开(公告)日：1994-08-30
申请号：US818327
申请日：1992-01-09
申请人： Steven C. Jasper , James A. Butler
发明人： Steven C. Jasper , James A. Butler
IPC分类号： H03J7/02 , H04L27/26 , H04L27/34 , H04L27/38 , H04L5/12
CPC分类号： H04L27/3818 , H03J7/02 , H04L27/2657 , H04L27/2675 , H04L27/34 , H04L5/0048
摘要： In a QAM communications system, a novel synchronizing sequence of symbols added to the information channel simplifies acquisition of timing and synchronization by a receiver. Such synchronization vectors provide signals for improved AFC control signal generation.
摘要翻译：在QAM通信系统中，添加到信息信道的符号的新型同步序列简化了接收机的定时和同步的获取。这样的同步向量提供用于改进的AFC控制信号产生的信号。

38. 发明授权

US5140615A Maximal ratio diversity combining technique 失效
标题翻译：最大比例分集组合技术
公开(公告)号：US5140615A
公开(公告)日：1992-08-18
申请号：US663777
申请日：1991-03-04
申请人： Steven C. Jasper , Mark A. Birchler
发明人： Steven C. Jasper , Mark A. Birchler
IPC分类号： H04B7/08 , H04L1/04 , H04L1/06 , H04L27/38
CPC分类号： H04L25/0232 , H04B7/0865 , H04L1/04 , H04L1/06 , H04L27/38
摘要： A method for implementing diversity reception to counteract effects of channel fading on a transmitted information signal. In diversity receive paths, estimates of complex channel gain are computed based upon pilot symbols inserted from time to time in the transmitted information symbol stream. Phase corrected and weighted samples from the diversity paths are summed prior to the decision process. The squared magnitudes of the diversity path channel gains are summed to provide the proper threshold adjustment.
摘要翻译：一种用于实现分集接收以抵消信道衰落对所发送的信息信号的影响的方法。在分集接收路径中，基于在发送的信息符号流中不时插入的导频符号来计算复信道增益的估计。来自分集路径的相位校正和加权样本在决策过程之前相加。将分集路径信道增益的平方幅度相加以提供适当的阈值调整。

39. 发明授权

US5134635A Convolutional decoder using soft-decision decoding with channel state information 失效
标题翻译：卷积解码器使用信道状态信息的软判决解码
公开(公告)号：US5134635A
公开(公告)日：1992-07-28
申请号：US560537
申请日：1990-07-30
申请人： Daehyoung Hong , Steven C. Jasper , Mark R. Poulin
发明人： Daehyoung Hong , Steven C. Jasper , Mark R. Poulin
IPC分类号： H03M13/41
CPC分类号： H03M13/41
摘要： A convolutional decoder which assigns bit metrics to at least one bit of a symbol in a multilevel system. This decoder uses soft-decision Viterbi decoding with channel state information of a convolutionally-encoded communication transmitted using multilevel modulation.
摘要翻译：卷积解码器，其将比特度量分配给多级系统中的符号的至少一位。该解码器对使用多级调制发送的卷积编码通信的信道状态信息进行软判定维特比解码。

40. 发明授权

US4675882A FM demodulator 失效
标题翻译： FM解调器
公开(公告)号：US4675882A
公开(公告)日：1987-06-23
申请号：US751913
申请日：1985-09-10
申请人： Ross J. Lillie , Steven C. Jasper
发明人： Ross J. Lillie , Steven C. Jasper
IPC分类号： H04L27/156 , H04L27/16
CPC分类号： H04L27/1566
摘要： A digital FM demodulator is described. According to the principles of the present invention, a digital FM signal is demodulated by processing sampled input vectors of a quadrature FM digital signal centered approximately zero frequency. The sampled quadrature input vectors are quantized to lie within a predetermined magnitude range. The quantized vectors are coupled to a phase accumulator which generates a current coarse phase value related to input vectors of the quadrature FM signal. The output of the phase accumulator is also coupled to a vector rotation means which rotates the input vector to a predetermined quadrant to determine a fine phase value based on said rotated input signal vector. The fine and coarse values are then summed and output as a composite phase value, and digitally filtered by subtracting the value of the previous composite phase angle sample from the value of the current composite phase angle sample to produce a demodulated message sample.
摘要翻译：描述了数字FM解调器。根据本发明的原理，通过处理以零频率为中心的正交FM数字信号的采样输入向量来解调数字FM信号。采样的正交输入矢量被量化在预定的幅度范围内。量化矢量被耦合到相位累加器，其产生与正交FM信号的输入矢量相关的当前粗略相位值。相位累加器的输出还耦合到矢量旋转装置，其将输入矢量旋转到预定的象限，以基于所述旋转的输入信号矢量来确定精细相位值。然后将精细和粗略值相加并作为复合相位值输出，并通过从当前复合相位角样本的值中减去先前复合相位角样本的值进行数字滤波，以产生解调消息样本。

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