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1.发明授权Method and apparatus for real-time adaptive interference cancellation in dynamic environments 失效在动态环境中实时自适应干扰消除的方法和装置
公开(公告)号：US5612978A
公开(公告)日：1997-03-18
申请号：US453420
申请日：1995-05-30
CPC分类号： H04B1/7102 , H04L25/03159 , H04L25/03993 , H04L2025/03522
摘要： A finite impulse response filter performs an FFT on a signal, multiplies it by a transfer function in the frequency domain, and then performs an inverse FFT. The transfer function is dynamically computed in real-time by detecting signal energy in the frequency domain and turning off bins that contain the signal. The signal is delayed prior to turning off the bin in a FIFO memory by an amount equal to the time required to compute the transfer function. In this way, relatively fast changes in the interference environment can be tracked and rejected. For example, short duration narrow band interference signals in the presence of a wideband signal of interest, including direct sequence (DS) spread-spectrum signals in the presence of frequency hopped (FH) spread spectrum signals are rejected. The received signal quality of DS spread spectrum signals is improved.
摘要翻译： 有限脉冲响应滤波器对信号执行FFT，将其乘以频域中的传递函数，然后执行逆FFT。 通过检测频域中的信号能量并关闭包含信号的信息箱，实时动态计算传递函数。 在将FIFO存储器中的存储器关闭等于计算传递函数所需时间的量之前，信号被延迟。 以这种方式，可以跟踪和拒绝干扰环境中相对较快的变化。 例如，在存在频率信号（FH）扩频信号的情况下，存在感兴趣的宽带信号（包括直接序列（DS））扩频信号的情况下，短暂的窄带干扰信号被拒绝。 提高了DS扩频信号的接收信号质量。
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公开(公告)号：US5629707A
公开(公告)日：1997-05-13
申请号：US369617
申请日：1995-01-06
CPC分类号： G01S5/02 , H04B7/1855
摘要： A subscriber unit (26) communicates with a satellite (12) using electromagnetic signals so that observations (102) of the signals are obtained. Surface contours are generated (104) based on the signal component measured. The surface contour intersections produce candidate locations on the earth's surface. The candidate locations seed a least-squares estimation to produce final locations. Data produced during the least-squares fit is used to generate confidence ellipses (116) about the final locations. Most likely actual locations are determined from the fit associated with the confidence regions. A variety of signal source measurements can be used while providing a best estimate of a signal source location when an exact solution is not mathematically possible. The location is converted to coordinates that can be used in a satellite communication system (10) for making decisions regarding the granting or denying of communication services, billing rate and the like.
摘要翻译： 用户单元（26）使用电磁信号与卫星（12）进行通信，从而获得信号的观察（102）。 基于测量的信号分量生成表面轮廓（104）。 表面轮廓交点产生地球表面上的候选位置。 候选位置种下最小二乘估计以产生最终位置。 在最小二乘拟合期间产生的数据用于生成关于最终位置的置信椭圆（116）。 最可能的实际位置由与置信区域相关联的拟合确定。 当精确的解决方案在数学上不可能时，可以使用各种信号源测量，同时提供信号源位置的最佳估计。 该位置被转换为可用于卫星通信系统（10）中的坐标，用于作出关于授予或拒绝通信服务，计费费率等的决定。
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公开(公告)号：US07043022B1
公开(公告)日：2006-05-09
申请号：US09447312
申请日：1999-11-22
CPC分类号： H04L63/0442 , H04L12/4633
摘要： A transmitter adds packet transmission order information to transmitted packets using a forward error device (416) and a masking device (420). The masking device (420) receives ordering masks (610) from a mask store (424). The ordering masks (610) are maintained in a known order, and the ordering masks (610) and the known order are known to both the transmitter and the receiver. The receiver includes an unmasking device (504) that applies ordering masks to unmask the packets, and then an error detection device checks for errors. The ordering masks (610) are applied in the known order until errors are below an acceptable limit. When errors are below an acceptable limit, the relative packet order is determined from the known order of the ordering masks.
摘要翻译： 发射机使用前向错误设备（416）和掩蔽设备（420）将分组传输顺序信息添加到传输的分组。 屏蔽设备（420）从掩码存储（424）接收排序掩码（610）。 排序掩码（610）以已知的顺序被维持，并且排序掩码（610）和已知的顺序对于发射器和接收器是已知的。 接收机包括应用排序掩码来取消掩码的解除遮掩设备（504），然后错误检测设备检查错误。 排序掩码（610）以已知的顺序应用，直到错误低于可接受的限制。 当错误低于可接受的限制时，相对分组顺序是根据订购掩码的已知顺序确定的。
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4.发明授权System and method for variable rate multiple access short message communications 有权用于可变速率多路访问短消息通信的系统和方法公开(公告)号：US08000377B2
公开(公告)日：2011-08-16
申请号：US10853481
申请日：2004-05-24
申请人： Scott D. Blanchard
发明人： Scott D. Blanchard
IPC分类号： H04B1/00
CPC分类号： H04J13/12 , H04B1/7075 , H04J13/102
摘要： A communication system and receiver is provided that facilitates increased message size in a communication system that supports a large number of transmitters sharing a common frequency band. The communication system facilitates increased message size by incorporating a plurality of transmit bit sets in each burst of data. The additional transmit bit sets are incorporated into a plurality of transmit codes that are generated using at least one additional spreading code that is orthogonal to the base spreading code. The plurality of transmit codes are then combined into one composite message and the composite message is spread again using another scrambling sequence. The final composite spread message is transmitted to the receiver in the appropriate message time slot, resulting in CDM/TDMA burst signal that facilitates increased message size.
摘要翻译： 提供了一种通信系统和接收机，其在支持大量共享共同频带的发射机的通信系统中促进增加的消息大小。 通信系统通过在每个数据突发中并入多个发送比特集来促进增加的消息大小。 附加的发送位集合被并入使用与基本扩展码正交的至少一个附加扩展码生成的多个发送码。 然后将多个发射码组合成一个复合消息，并且使用另一个加扰序列再次扩展合成消息。 最终的复合扩展消息在适当的消息时隙中被发送到接收机，导致CDM / TDMA突发信号有助于增加消息大小。
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5.发明授权Apparatus for rapid interference cancellation and despreading of a CDMA waveform 失效CDMA波形快速干扰消除和解扩装置
公开(公告)号：US5629929A
公开(公告)日：1997-05-13
申请号：US657576
申请日：1996-06-07
IPC分类号： H04B1/7097 , H04J13/00 , H04J11/00
CPC分类号： H04B1/7097
摘要： A receiver performs rapid adaptive interference canceling for use in despreading multiple CDMA channels sharing the same RF front end. The receiver includes a buffer (22) for providing for overlapping time samples and rate adaptation, a windowing function (24) for improving interference rejection capability and a FFT (26) for calculating the input power spectrum. The receiver further includes a circuit (28, 30) to whiten the input power spectrum. The whitened power spectrum is multiplied (32) against the frequency domain version of different spreading sequences and the inverse FFT (40) of the product is performed. The output of this inverse FFT is buffered (44) to provide multiple despread output channels, with a plurality of code phases for further processing.
摘要翻译： 接收机执行快速自适应干扰消除以用于解扩多个共享相同RF前端的CDMA信道。 接收机包括用于提供重叠时间采样和速率自适应的缓冲器（22），用于改善干扰抑制能力的加窗功能（24）和用于计算输入功率谱的FFT（26）。 接收器还包括用于使输入功率谱增白的电路（28,30）。 白化功率谱与不同扩展序列的频域版本相乘（32），并执行产物的逆FFT（40）。 该逆FFT的输出被缓冲（44）以提供多个解扩输出通道，具有用于进一步处理的多个代码阶段。
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公开(公告)号：US07154848B2
公开(公告)日：2006-12-26
申请号：US10158296
申请日：2002-05-29
申请人： Scott D. Blanchard
发明人： Scott D. Blanchard
IPC分类号： H04J11/00
摘要： Methods and apparatus are provided for generating for generating a multiplexed communication signal in a wireless communication system. The apparatus comprises inputs configured to receive digital communication signals, a transform matrix configured to transform the digital communication signals into transformed digital communication signals, and a processor configured to generate a scaling vector for the transformed digital communication signals. Furthermore, the apparatus further comprises an operator configured to produce a mantissa for each of the transformed digital communication signals with the scaling vector and a multiplexer configured to multiplex the mantissa for each of the transformed digital communication signals and the scaling vector to produce the multiplexed communication signal.
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公开(公告)号：US06782102B2
公开(公告)日：2004-08-24
申请号：US09746385
申请日：2000-12-21
IPC分类号： H04N714
CPC分类号： H04K1/00 , H04M1/0256 , H04M1/72522
摘要： Multiple format secure voice apparatus for communication handsets includes a core unit with a speaker, a microphone, a keypad, and a display. The core unit also includes an audio circuit coupled to the speaker and the microphone, an encryption/decryption element coupled to the audio circuit, a coder/decoder element coupled to the audio circuit and the encryption/decryption element, and a control element coupled to the keypad, the display, the audio circuit, the encryption/decryption element, and the coder/decoder element. A standard interface coupling is connected to an audio I/O terminal, a data I/O terminal of the coder/decoder element, and a control I/O terminal of the control element. A mating standard interface coupling mates with the standard interface coupling of the core unit and is coupled to the mating standard interface coupling.
摘要翻译： 用于通信手机的多格式安全语音装置包括具有扬声器，麦克风，小键盘和显示器的核心单元。 核心单元还包括耦合到扬声器和麦克风的音频电路，耦合到音频电路的加密/解密元件，耦合到音频电路和加密/解密元件的编码器/解码器元件，以及耦合到 键盘，显示器，音频电路，加密/解密元件和编码器/解码器元件。 标准接口耦合连接到音频I / O端子，编码器/解码器元件的数据I / O端子以及控制元件的控制I / O端子。 配对标准接口耦合与核心单元的标准接口耦合配合，并耦合到配对标准接口耦合。
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公开(公告)号：US07280497B2
公开(公告)日：2007-10-09
申请号：US10211835
申请日：2002-08-02
申请人： Scott D. Blanchard
发明人： Scott D. Blanchard
CPC分类号： H04B7/18515 , H04B7/216
摘要： Methods and apparatus are provided for coupling an earth terminal to a satellite The apparatus comprises multiple inputs of the earth terminal configured to receive multiple digital communication signals, a autoscaling digital multiplexer of the earth terminal configured to digitally multiplex the multiple digital communication signals to produce a digital composite signal, and a digital modulator of the earth terminal configured to digitally modulate the digital composite signal to produce a digitally modulated composite signal. In addition, the apparatus comprises an input of the satellite configured to receive the digitally modulated composite signal, and a digital demodulator of the satellite configured to digitally demodulate the digitally modulated composite signal received by the input of the satellite to produce a second digital composite signal. Furthermore, the apparatus comprises a autoscaling digital demultiplexer of the satellite configured to digitally separate the second digital composite signal into a second plurality of digital communication signals, and a modulator of the satellite configured to modulate the second plurality of digital communications signal to produce multiple modulated analog signals.
摘要翻译： 提供了用于将接地端子耦合到卫星的方法和装置。该装置包括被配置为接收多个数字通信信号的接地端子的多个输入，地球终端的自动缩放数字多路复用器被配置为数字地多路复用多个数字通信信号以产生 数字复合信号和接地端子的数字调制器，被配置为对数字复合信号进行数字调制以产生数字调制复合信号。 此外，该装置包括被配置为接收数字调制的复合信号的卫星的输入，以及卫星的数字解调器，被配置为对由卫星的输入接收的数字调制复合信号进行数字解调以产生第二数字复合信号 。 此外，该装置包括卫星的自动缩放数字解复用器，被配置为将第二数字复合信号数字地分离成第二多个数字通信信号，并且卫星的调制器被配置为调制第二多个数字通信信号以产生多个调制 模拟信号。
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公开(公告)号：US07280496B2
公开(公告)日：2007-10-09
申请号：US10211793
申请日：2002-08-02
申请人： Scott D. Blanchard
发明人： Scott D. Blanchard
CPC分类号： H04B7/216
摘要： Methods and apparatus are provided for coupling a satellite to an earth terminal. The apparatus inputs of the satellite that is configured to receive digital uplink signals, an autoscaling digital multiplexer of the satellite that is configured to digitally multiplex the digital uplink signals to produce a digital composite signal, and a digital modulator of the satellite that is configured to digitally modulate the digital composite signal to produce a digitally modulated composite signal. In addition, the apparatus comprises an input of the earth terminal that configured to receive the digitally modulated composite signal and a digital demodulator of the earth terminal that is configured to digitally demodulate the digitally modulated composite signal received by the input of the earth terminal to produce a second digital composite signal. Furthermore, the apparatus comprises an autoscaling digital demultiplexer of the earth terminal that is configured to digitally separate the second digital composite signal into digital uplink signals, and a modulator of the earth terminal configured to modulate the digital uplink signals to produce modulated analog signals.
摘要翻译： 提供了用于将卫星耦合到地球终端的方法和装置。 被配置为接收数字上行链路信号的卫星的设备输入，被配置为数字地复用数字上行链路信号以产生数字复合信号的卫星的自动缩放数字多路复用器，以及被配置为 对数字复合信号进行数字调制以产生数字调制复合信号。 此外，该装置包括：接地端子的输入，其被配置为接收数字调制复合信号;以及接地端子的数字解调器，其被配置为数字地解调由接地端子的输入接收的数字调制复合信号，以产生 第二数字复合信号。 此外，该装置包括接地终端的自动缩放数字解复用器，其被配置为将第二数字复合信号数字地分离成数字上行链路信号，以及配置为调制数字上行链路信号以产生调制的模拟信号的接地终端的调制器。
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