公开(公告)号：US5638403A

公开(公告)日：1997-06-10

申请号：US430969

申请日：1995-04-28

申请人： Mark A. Birchler ,  Steven C. Jasper ,  Alek Tziortzis

发明人： Mark A. Birchler ,  Steven C. Jasper ,  Alek Tziortzis

IPC分类号： H04B7/005 ,  H04L27/26 ,  H04L25/49

CPC分类号： H04L27/2602 ,  H04B7/005 ,  H04L27/2624

摘要： A method of low-splatter peak-to-average reduction for a linear communication system includes the step of sampling (1201) an input signal at a first rate, yielding a plurality of input samples. When at least one (1401, 1403, and 1405) of the plurality of input samples is above a first threshold, a local maximum (1401) is determined (1207) from among the plurality of input samples. At least one value (1407 and 1409) is interpolated (1207) between the local maximum and at least one sample (1405) adjacent to the local maximum. The at least one value and the local maximum are compared (1211) to determine which has the highest magnitude. The value having the highest magnitude (1407) is compared (1213) to a second threshold. When the value having the highest magnitude (1407) is above the second threshold, an attenuating window is centered (1505) at the value having the highest magnitude and applying (1507) the attenuating window to at least some of the plurality of input samples.

摘要翻译： 一种用于线性通信系统的低飞散峰均降低的方法包括以第一速率采样（1201）输入信号的步骤，产生多个输入采样。 当多个输入样本中的至少一个（1401,1403和1405）高于第一阈值时，从多个输入样本中确定局部最大值（1401）（1207）。 至少一个值（1407和1409）在局部最大值与邻近局部最大值的至少一个样本（1405）之间插值（1207）。 将至少一个值和局部最大值进行比较（1211），以确定哪个值最大。 具有最高幅度（1407）的值被比较（1213）到第二阈值。 当具有最高幅度（1407）的值高于第二阈值时，衰减窗口在具有最高幅度的值处居中（1505），并且将衰减窗口（1507）应用于多个输入样本中的至少一些。

公开(公告)号：US06396825B1

公开(公告)日：2002-05-28

申请号：US09339416

申请日：1999-06-24

申请人： Steven C. Jasper ,  Mark A. Birchler ,  Debra A. Jones ,  Nicholas C. Oros

发明人： Steven C. Jasper ,  Mark A. Birchler ,  Debra A. Jones ,  Nicholas C. Oros

IPC分类号： H04J300

CPC分类号： G01S5/0221 ,  G01S5/14 ,  G01S11/02 ,  G01S2205/007

摘要： A base site (104) generates a pseudo-random signal based on at least one system parameter known to both the base site and a communication unit (112). The base site (104) then transmits the pseudo-random signal to the communication unit via an idle communication resource (102). Upon receiving the pseudo-random signal, the communication unit (112) determines at least one characteristic of the idle communication resource (102) using the pseudo-random signal.

摘要翻译： 基站（104）基于基站和通信单元（112）已知的至少一个系统参数产生伪随机信号。 基站（104）然后经由空闲通信资源（102）将伪随机信号发送到通信单元。 在接收到伪随机信号时，通信单元（112）使用伪随机信号确定空闲通信资源（102）的至少一个特性。

公开(公告)号：US5381449A

公开(公告)日：1995-01-10

申请号：US786681

申请日：1991-11-01

申请人： Steven C. Jasper ,  Mark A. Birchler

发明人： Steven C. Jasper ,  Mark A. Birchler

IPC分类号： H04L1/02 ,  H04L27/26 ,  H04L27/34 ,  H04L27/04

CPC分类号： H04L25/0226 ,  H04L27/2613 ,  H04L27/262 ,  H04L27/2637 ,  H04L27/2657 ,  H04L27/3411 ,  H04L27/3455 ,  H04L5/0048 ,  H04B2201/70701 ,  H04L27/2608

摘要： The ratio of peak power level to average power level in a power amplifier used in a QAM communication system transmitter can be reduced by preselecting magnitudes and phase angles of complex-valued pilot symbols used in multi-channel, N-level QAM.

摘要翻译： 在QAM通信系统发射机中使用的功率放大器中峰值功率电平与平均功率电平的比可以通过预先选择在多通道N级QAM中使用的复值导频符号的幅度和相位角来减小。

公开(公告)号：US5241544A

公开(公告)日：1993-08-31

申请号：US786440

申请日：1991-11-01

申请人： Steven C. Jasper ,  Mark A. Birchler

发明人： Steven C. Jasper ,  Mark A. Birchler

IPC分类号： H04J11/00 ,  H04J1/00 ,  H04L27/26 ,  H04L27/34

CPC分类号： H04L27/2602 ,  H04L27/262

摘要： In a digital communication system in which pulse-shape filtered sync, pilot, and data symbols, arranged in successive time slots, modulate sub-channel carriers via sub-channel mixers to form sub-channel symbol streams for combination into a composite signal for transmission, deterministic portions of each time slot are rendered identical by determining phase difference of sub-channel carriers and rotating the phase of each sub-channel symbol stream by an amount equal to the phase difference, but with opposite sign.

摘要翻译： 在以连续时隙排列的脉冲形滤波同步，导频和数据符号的数字通信系统中，经由子信道混频器调制子信道载波以形成用于组合的复合信号用于传输的子信道符号流 通过确定子信道载波的相位差并使每个子信道符号流的相位旋转一个等于相位差的量，但具有相反的符号，使每个时隙的确定性部分相同。

公开(公告)号：US5440590A

公开(公告)日：1995-08-08

申请号：US143589

申请日：1993-11-01

申请人： Mark A. Birchler ,  Steven C. Jasper ,  Karen A. Brailean ,  Timothy J. Wilson

发明人： Mark A. Birchler ,  Steven C. Jasper ,  Karen A. Brailean ,  Timothy J. Wilson

IPC分类号： H04B7/08 ,  H04B7/10 ,  H04L1/06 ,  H04L1/02

CPC分类号： H04B7/0808 ,  H04B7/10 ,  H04L1/06

摘要： A diversity receiver that receives diverse modulated signals may produce a usable signal from the received modulated signals in the following manner. Two modulated signals, each including a desired component and an undesired component, are received by the diversity receiver, wherein each desired component includes an originally transmitted signal and each undesired component includes noise and interference. The diversity receiver estimates each desired and undesired component and produces the usable signal based on the estimated desired components and the estimated undesired components.

摘要翻译： 接收不同调制信号的分集接收机可以以下列方式从接收到的调制信号产生可用信号。 每个包含期望分量和不期望分量的两个调制信号由分集接收机接收，其中每个期望分量包括最初传输的信号，并且每个非期望分量包括噪声和干扰。 分集接收器估计每个期望的和不期望的分量，并且基于估计的期望分量和所估计的不期望的分量产生可用信号。

公开(公告)号：US5519730A

公开(公告)日：1996-05-21

申请号：US783289

申请日：1991-10-28

申请人： Steven C. Jasper ,  Mark A. Birchler ,  James D. Solomon

发明人： Steven C. Jasper ,  Mark A. Birchler ,  James D. Solomon

IPC分类号： H04L1/02 ,  H04B1/707 ,  H04B3/10 ,  H04J1/00 ,  H04L27/26 ,  H04L27/34 ,  H04L27/28 ,  H04J1/08 ,  H04L1/04

CPC分类号： H04L27/3455 ,  H04L25/0226 ,  H04L27/2613 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/3411 ,  H04L5/0048 ,  H04B2201/70701 ,  H04L27/2637 ,  H04L5/0007

摘要： A quad 16 QAM transmission and reception methodology wherein a time domain pilot reference is advantageously associated therewith. There may be one or more such pilot references for each packet of multiple 16 QAM pulses. Depending upon the embodiment, each 16 QAM pulse can include a time domain pilot reference, or an estimated pilot reference for that pulse can be determined either by reference to pilot references in other pulses sharing the same packet, or by reference to pilot references for other previously received 16 QAM pulses corresponding to that same pulse.

摘要翻译： 四进制16QAM传输和接收方法，其中时域导频参考有利地与其相关联。 对于多个16个QAM脉冲的每个分组，可以存在一个或多个这样的导频参考。 根据实施例，每个16QAM脉冲可以包括时域导频参考，或者可以通过参考共享相同分组的其他脉冲中的导频参考，或参考其他的导频参考来确定该脉冲的估计导频参考 先前接收到相同脉冲的16个QAM脉冲。

公开(公告)号：US5469465A

公开(公告)日：1995-11-21

申请号：US333409

申请日：1994-11-02

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.

公开(公告)号：US07796633B2

公开(公告)日：2010-09-14

申请号：US11383077

申请日：2006-05-12

申请人： Mark A. Birchler ,  Jeffrey D. Bonta ,  Steven C. Jasper

发明人： Mark A. Birchler ,  Jeffrey D. Bonta ,  Steven C. Jasper

IPC分类号： H04J3/16

CPC分类号： H04W40/12 ,  H04L45/123 ,  H04L45/125 ,  H04L45/24 ,  H04L45/3065 ,  H04W40/246 ,  H04W52/0216 ,  H04W52/0219 ,  H04W84/12 ,  H04W88/06 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23 ,  Y02D70/34

摘要： A range equalization transceiver system (100) for increasing efficiency of a continuous duty communications link includes a first transceiver (105) for transmitting data traffic over a broadband traffic channel and a second transceiver (107) for determining routing information using a discovery channel based on link quality. A controller (103) is used for interpreting routing information from the second transceiver (107) where the controller (103) selects a transmitting scheme based on data traffic conditions on both the broadband traffic channel and link quality channel for sending data over a wireless network.

摘要翻译： 用于提高连续工作通信链路效率的量程均衡收发机系统（100）包括用于通过宽带业务信道发送数据业务的第一收发机（105）和用于基于基于 链接质量。 控制器（103）用于解释来自第二收发器（107）的路由信息​​，其中控制器（103）基于宽带业务信道上的数据业务条件和通过无线网络发送数据的链路质量信道来选择发送方案 。

公开(公告)号：US6167275A

公开(公告)日：2000-12-26

申请号：US992062

申请日：1997-12-17

申请人： Nicholas C. Oros ,  Steven C. Jasper ,  Mark A. Birchler

发明人： Nicholas C. Oros ,  Steven C. Jasper ,  Mark A. Birchler

IPC分类号： H04W64/00 ,  H04Q7/20

CPC分类号： H04W64/00

摘要： A wireless communication system (100) that includes a plurality of base sites (101-103) employs a method and apparatus for determining a location of a communication unit (107) in the system. Upon transmission of an information signal (109) by the communication unit, each of the base sites receives the transmitted information signal. A serving base site (e.g., 103) determines a stream of information symbols from the information signal, derives timing information based on the information signal and the stream of information symbols, and conveys the stream of information symbols preferably to at least two non-serving base sites (101-102). The non-serving base sites determine respective timing information based on the information signal received from the communication unit and the stream of information symbols received from the serving base site. The location of the communication unit is then determined by either a base site or a stand-alone processing device (105) based on the serving base site's and non-serving base site's timing information.

摘要翻译： 包括多个基站（101-103）的无线通信系统（100）采用用于确定系统中的通信单元（107）的位置的方法和装置。 在由通信单元发送信息信号（109）时，每个基站接收发送的信息信号。 服务基站（例如，103）从信息信号确定信息符号流，基于信息信号和信息符号流导出定时信息，并将信息符号流优选地传送至至少两个不服务 基地（101-102）。 非服务基站基于从通信单元接收的信息信号和从服务基站接收到的信息符号流来确定相应的定时信息。 然后，由基站或独立处理设备（105）基于服务基站和非服务基站的定时信息来确定通信单元的位置。

公开(公告)号：US5553102A

公开(公告)日：1996-09-03

申请号：US348027

申请日：1994-12-01

申请人： Steven C. Jasper ,  Mark A. Birchler ,  Nicholas C. Oros

发明人： Steven C. Jasper ,  Mark A. Birchler ,  Nicholas C. Oros

IPC分类号： H04B7/08 ,  H04B7/10

CPC分类号： H04B7/0848

摘要： In a diversity reception communication system (200), a method is provided for recovering data symbols (213) from a transmitted signal. Multiple signals representing the transmitted signal are received via corresponding multiple reception paths (201, 202). For each reception path, values are determined for noise (206), channel quality (207), and for a weighting factor (209) as a function of the channel quality. The signals are processed using diversity combining (212) which includes the weighting factor (209) for each reception path, to provide a resultant signal that more likely represents the transmitted signal than any of the received signals alone. The data symbols (213) are recovered from the resultant signal.

摘要翻译： 在分集接收通信系统（200）中，提供了从发送信号中恢复数据符号（213）的方法。 通过相应的多个接收路径（201,202）接收表示发送信号的多个信号。 对于每个接收路径，确定噪声（206），信道质量（207）和作为信道质量的函数的加权因子（209）的值。 使用包括每个接收路径的加权因子（209）的分集组合（212）来处理信号，从而仅提供比任何接收信号更可能地表示发送信号的结果信号。 从结果信号中恢复数据符号（213）。