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131. 发明申请

US20050259760A1 Method and apparatus for excision of narrowband interference signals in navigation or communication bands 失效
标题翻译：用于在导航或通信频带中切除窄带干扰信号的方法和装置
公开(公告)号：US20050259760A1
公开(公告)日：2005-11-24
申请号：US11133225
申请日：2005-05-20
申请人： Mario Casabona , Murray Rosen , Ilya Kovnatsky , David Alstine
发明人： Mario Casabona , Murray Rosen , Ilya Kovnatsky , David Alstine
IPC分类号： G01S1/00 , H03D1/04 , H04B1/707 , H04K1/10 , H04K3/00
CPC分类号： H04W52/18 , G01S19/21 , H04B1/7102 , H04K3/228 , H04K3/90
摘要： A narrowband interference excision and nulling system for Global Positioning Satellite (GPS), spread spectrum navigation and communication bands, and an antijam electronic apparatus that operates using RF conversion and digital signal processing. A band containing the signal of interest as well as interference is converted to an intermediate frequency (IF) for RF filtering using single conversion, and this signal is digitized using an analog-to-digital converter (ADC). A representation of the signal is produced at a lower frequency using digitization and filtering, and a continuous data representation of the band is processed using multiple-point samples to define the input to a complex FFT. The FFT produces contiguous frequency bins that are examined to identify narrowband and broadband interference. An excision algorithm determines the optimum pattern of bins to be removed, after which the residual bins are reconstructed using an IFFT, followed by digital-to-analog conversion and RF conversion to the output band. Narrowband interference excision can be integrated with two-port broadband suppression in cascade using a masked variable resolution FFT spectral energy detection receiver.
摘要翻译：用于全球定位卫星（GPS），扩频导航和通信频带的窄带干扰切除和归零系统，以及使用RF转换和数字信号处理进行操作的抗干扰电子设备。将包含感兴趣的信号和干扰的频带转换为用于使用单个转换的RF滤波的中频（IF），并且该信号使用模数转换器（ADC）进行数字化。使用数字化和滤波在较低频率下产生信号的表示，并且使用多点样本处理带的连续数据表示以将复合FFT的输入定义。 FFT产生连续的频率仓，用于识别窄带和宽带干扰。切除算法确定要去除的料仓的最佳模式，之后使用IFFT重建残余料仓，然后进行数模转换和RF转换到输出带。使用掩蔽的可变分辨率FFT频谱能量检测接收机可以将级联的窄带干扰切除与双端口宽带抑制集成在一起。

132. 发明申请

US20050200517A1 Multi-function device with positioning system and shared processor 有权
标题翻译：具有定位系统和共享处理器的多功能设备
公开(公告)号：US20050200517A1
公开(公告)日：2005-09-15
申请号：US11053573
申请日：2005-02-07
申请人： Scott Bloebaum , Andrew Chou , Benjamin Roy
发明人： Scott Bloebaum , Andrew Chou , Benjamin Roy
IPC分类号： G01S19/37 , G01S1/00 , G01S5/00 , G01S19/25 , G01S19/29 , H04B1/707 , H04B7/185 , G01C21/26
CPC分类号： H04B1/7102 , G01S5/0036 , G01S19/25 , G01S19/29 , G01S19/37 , H04B2201/70715
摘要： A multi-function device with a positioning function and a real time positioning engine is disclosed. The device contains also a shared processor used by the positioning function and other functions of the device, such as a mobile radio-communication function. The positioning engine performs in real time the most computational intensive calculations of the positioning function, such as downsampling, Doppler mixing and correlation calculations. Since the received signal need not be stored, the memory requirements of the positioning function are significantly reduced if aiding data is available.
摘要翻译：公开了具有定位功能的多功能装置和实时定位引擎。该设备还包括由定位功能和设备的其他功能（例如移动无线电通信功能）使用的共享处理器。定位引擎实时执行定位功能的最大计算密集型计算，例如下采样，多普勒混合和相关计算。由于接收到的信号不需要存储，所以如果有帮助数据可用，定位功能的存储器要求会大大降低。

133. 发明授权

US06925071B2 Spread spectrum base station 失效
标题翻译：扩频基站
公开(公告)号：US06925071B2
公开(公告)日：2005-08-02
申请号：US10072083
申请日：2002-02-08
申请人： Donald L. Schilling
发明人： Donald L. Schilling
IPC分类号： G01S5/00 , G01S5/14 , G01S13/82 , G01S19/11 , H04B1/707 , H04B1/71 , H04B7/005 , H04B7/185 , H04B7/216 , H04B7/26 , H04J13/00 , H04W4/12 , H04W4/18 , H04W52/34 , H04W64/00 , H04W88/02 , H04W88/08 , H04J13/02
CPC分类号： H04W52/343 , G01S5/0036 , G01S5/14 , G01S13/82 , H04B1/707 , H04B1/71 , H04B1/7102 , H04B7/18547 , H04B7/216 , H04B7/2628 , H04B7/2631 , H04B2201/70701 , H04B2201/709709 , H04J13/00 , H04W4/12 , H04W4/18 , H04W52/346 , H04W64/00 , H04W64/006 , H04W88/02 , H04W88/08
摘要： A spread spectrum remote unit produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is combined as a combined signal. The combined signal is transmitted as the combined spread spectrum signal.
摘要翻译：扩频远程单元产生具有消息数据的消息信号。产生参考信号。参考信号用于从组合扩频信号中恢复消息数据。参考信号和消息信号被组合为组合信号。组合信号作为组合扩频信号发送。

134. 发明申请

US20050074079A1 RFI canceller 审中-公开
标题翻译： RFI消除器
公开(公告)号：US20050074079A1
公开(公告)日：2005-04-07
申请号：US10352983
申请日：2003-01-29
申请人： Gary Jin
发明人： Gary Jin
IPC分类号： H04B1/707 , H04L27/26 , H04L1/00
CPC分类号： H04B1/7102 , H04L27/2647
摘要： Narrow band RF interference in a modulated signal carried on a plurality of subchannels is carried out by detecting RF interference in the subchannels, identifying a subchannel where the magnitude of the RF interference has a predetermined characteristic, determining the value of the magnitude of the RF interference with the predetermined characteristic, determining the value of the magnitude of the RF interference in neighboring subchannels, estimating the value of the magnitude of the RF interference the remaining subchannels from the determined values, and subtracting the estimated values of the magnitude of the RF interference from the signals in the corresponding remaining subchannels.
摘要翻译：通过检测子信道中的RF干扰来识别携带在多个子信道上的调制信号中的窄带RF干扰，识别RF干扰的幅度具有预定特性的子信道，确定RF干扰幅度的值具有预定特性，确定相邻子信道中的RF干扰的大小的值，从所确定的值估计剩余子信道的RF干扰的幅度的值，以及从所确定的值中减去RF干扰幅度的估计值在相应的剩余子信道中的信号。

135. 发明申请

US20040213333A1 Sigma-delta modulation code division multiple-access receiver 审中-公开
标题翻译： Sigma-delta调制码分多址接收机
公开(公告)号：US20040213333A1
公开(公告)日：2004-10-28
申请号：US10478938
申请日：2004-06-07
发明人： Kaibin Huang , Kwee Tong Heng , Po Shin Francois Chin
IPC分类号： H04B001/707
CPC分类号： H04B1/71 , H03M3/40 , H04B1/707 , H04B1/7102
摘要： A code division multiple-access receiver comprises an analog-to-digital converter for digitising a demodulated spread signal. The analog-to-digital converter is a Sigma-Delta modulator. The receiver also comprises a despreader comprising simple logic gates and an integrator, performing the function of despreading the digitised demodulated spread signal into a digitised baseband signal. The despreader doubles as a Sigma-Delta demodulator and hence eliminates a separate stage of Sigma-Delta demodulation.
摘要翻译：码分多址接收机包括用于数字化解调扩展信号的模数转换器。模数转换器是Σ-Δ调制器。该接收机还包括一个包括简单逻辑门和积分器的解扩器，执行将数字化解调扩展信号解扩展为数字化基带信号的功能。解扩器兼作Sigma-Delta解调器，因此消除了Sigma-Delta解调的单独阶段。

136. 发明授权

US06473453B1 High data rate multiplexed multichannel high frequency broadcast system 失效
标题翻译：高数据速率复用多通道高频广播系统
公开(公告)号：US06473453B1
公开(公告)日：2002-10-29
申请号：US07953278
申请日：1992-09-30
申请人： Robert G. Wilkinson
发明人： Robert G. Wilkinson
IPC分类号： H04B1707
CPC分类号： H04B1/7102 , H04J13/004
摘要： A high frequency communications system comprises eight multiplexed (112) spread spectrum channels with data in each channel transmitted using, for example, 32 semi-orthogonal codes to enable 5 bits of data to be sent for every coded symbol transmitted. The multiplexed data is connected to a phase shift key (PSK) modulator (117) to modulate an hf carrier. At the receiver, inband interference is removed by frequency excision (92, 128) or weighting, making use of the facts that the interference is generally narrow-band and the spectrum of the frequency components of the received signal should be symmetrical about the carrier frequency. The detected signal is Fourier transformed by an FFT processor (91) and then connected to an interference exciser (92, 128) where signal samples symmetrical about the carrier frequency are compared and any sample which exceeds the respective symmetrical sample by more than a predetermined threshold is excised or given a low weighting. After interference excision the remaining signal is connected to a bank (1210) of 32 cross-correlation detectors before connection to a maximum likelihood detector and decoder (1213).
摘要翻译：高频通信系统包括8个多路复用（112）扩频信道，每个信道中的数据使用例如32个半正交码发送，以便每发送的编码符号发送5位数据。复用数据连接到相移键（PSK）调制器（117）以调制hf载波。在接收机中，通过频率切除（92,128）或加权来去除带内干扰，利用干扰通常是窄带的事实，并且接收信号的频率分量的频谱应当关于载波频率对称。所检测的信号由FFT处理器（91）进行傅立叶变换，然后连接到干扰去除器（92,128），其中将关于载波频率对称的信号样本与超过相应对称采样的任何样本相比超过预定阈值被切除或给予低加权。在干扰切除之后，剩余的信号在连接到最大似然检测器和解码器（1213）之前连接到32个互相关检测器的存储体（1210）。

137. 发明申请

US20010033562A1 Broadband CDMA overlay system and method 失效
标题翻译：宽带CDMA覆盖系统及方法
公开(公告)号：US20010033562A1
公开(公告)日：2001-10-25
申请号：US09878586
申请日：2001-06-11
申请人： InterDigital Technology Corporation, Delaware Corporation
发明人： Donald L. Schilling
IPC分类号： H04B007/216
CPC分类号： H04W52/343 , G01S5/0036 , G01S5/14 , G01S13/82 , H04B1/71 , H04B1/7101 , H04B1/7102 , H04B7/18547 , H04B7/216 , H04B7/2628 , H04B7/2631 , H04J13/00 , H04W4/18 , H04W52/346 , H04W84/042 , H04W88/08
摘要： A wireless communication system has spread spectrum and narrow band users. A selected base station produces a spread spectrum signal for transmission in a selected sector of the base station. The produced spread spectrum signal notch filters at frequencies. These frequencies are used by narrow band users located in the selected sector and sectors of base stations other than the selected base station adjacent tot he selected sector. The notch filtered signal is transmitted in the selected sector.
摘要翻译：无线通信系统具有扩频和窄带用户。所选择的基站产生用于在基站的选定扇区中传输的扩频信号。产生的扩频信号陷波滤波器在频率上。这些频率由位于所选择的扇区中的窄带用户和与所选扇区相邻的所选基站以外的基站的扇区使用。陷波滤波信号在所选扇区中传输。

138. 发明申请

US20010012315A1 Method in a receiver and a receiver 有权
标题翻译：接收机和接收机中的方法
公开(公告)号：US20010012315A1
公开(公告)日：2001-08-09
申请号：US09745081
申请日：2000-12-20
申请人： Nokia Mobile Phones Ltd.
发明人： Ilkka Kontola
IPC分类号： H04B015/00 , H04K001/00 , H04L027/30
CPC分类号： H04B1/7102 , H04B1/707
摘要： The invention relates to a method for reducing the effect of multipath propagation in a receiver (1) in which a code-modulated spread spectrum signal is received. In the method, at least one reference code (r(x)) corresponding to a code used in modulation is used to form at least two reference signals with different phases. Correlation between a received signal and each reference signal is performed to form correlation values. The method also comprises the steps of forming a divider function and performing at least a deconvolution step, in which a first time-to-frequency transformation is performed on the corelation results to form first transform results, and said first transform results are divided by the values of said divider function to form a division result. The invention also relates to a receiver (1) for receiving a code modulated spread spectrum signal, and an electronic device (24) comprising at least a positioning receiver (1) with means (2) for receiving a code modulated spread spectrum signal.
摘要翻译：本发明涉及一种降低接收器（1）中多径传播效应的方法，其中接收码调制扩频信号。在该方法中，使用与调制中使用的代码相对应的至少一个参考码（r（x））来形成具有不同相位的至少两个参考信号。执行接收信号与每个参考信号之间的相关以形成相关值。该方法还包括以下步骤：形成除法器功能，并执行至少去卷积步骤，其中，对核心关联结果执行第一时间 - 频率变换以形成第一变换结果，并且将所述第一变换结果除以所述分频器的值形成分割结果。本发明还涉及一种用于接收码调制的扩展频谱信号的接收机（1）和至少包括定位接收机（1）的电子设备（24），该定位接收机具有用于接收码调制的扩频信号的装置（2）。

139. 发明授权

US6154443A FFT-based CDMA RAKE receiver system and method 有权
标题翻译：基于FFT的CDMA RAKE接收机系统及方法
公开(公告)号：US6154443A
公开(公告)日：2000-11-28
申请号：US132859
申请日：1998-08-11
申请人： Chia-Chi Huang , Shin-Iuan Wang , Yung-Liang Huang
发明人： Chia-Chi Huang , Shin-Iuan Wang , Yung-Liang Huang
IPC分类号： H04B1/7093 , H04B1/71 , H04B1/7103 , H04B1/7115 , H04J13/00
CPC分类号： H04B1/7103 , H04B1/7093 , H04B1/7102 , H04B1/7115
摘要： The present invention provides a CDMA RAKE receiver that computes a data detection using Fast Fourier Transform (FFT) matched filters. Signals received are processed in frequency domain by the RAKE receiver. The RAKE receiver includes a pilot signal spreading code matched filter, a data signal spreading code matched filter and a channel matched filter. The pilot signal spreading code matched filter removes a spreading code of the pilot signal. The data signal spreading code matched filter removes a multiple access spreading code of the data signal. A channel matched filter estimates the channel frequency response and combine the received data signal from different paths before a decision is made. For increasing the CDMA system capacity, the RAKE receiver uses a interference cancellation method. A downlink receiver at a mobile station estimates the interference of a pilot signal and subtracts the pilot interference from the received signal before data detection. The uplink receivers at a base station use a multi-stage parallel interference cancellation process for removing multiple access interference from other users.
摘要翻译：本发明提供一种使用快速傅立叶变换（FFT）匹配滤波器来计算数据检测的CDMA RAKE接收机。接收到的信号由RAKE接收机在频域处理。 RAKE接收机包括导频信号扩展码匹配滤波器，数据信号扩展码匹配滤波器和信道匹配滤波器。导频信号扩展码匹配滤波器去除导频信号的扩展码。数据信号扩展码匹配滤波器去除数据信号的多址扩展码。信道匹配滤波器估计信道频率响应，并在作出决定之前组合来自不同路径的接收数据信号。为了增加CDMA系统容量，RAKE接收机使用干扰消除方法。移动站的下行链路接收机估计导频信号的干扰，并在数据检测之前从接收到的信号中减去导频干扰。基站的上行链路接收机使用多级并行干扰消除处理来消除来自其他用户的多址干扰。

140. 发明授权

US6035213A Dual-mode cellular telephone system 失效
标题翻译：双模蜂窝电话系统
公开(公告)号：US6035213A
公开(公告)日：2000-03-07
申请号：US868993
申请日：1997-06-04
申请人： Masamori Tokuda , Masao Miyazaki , Takeshi Okamoto
发明人： Masamori Tokuda , Masao Miyazaki , Takeshi Okamoto
IPC分类号： H04J13/00 , H04B1/10 , H04Q7/32 , H04B1/38
CPC分类号： H04B1/71 , H04B1/1036 , H04B1/7101 , H04B1/7102 , H04B2001/1063
摘要： A dual-mode cellular telephone system which is capable of suppressing a narrow-band disturbing signal appearing in a mobile station of a dual-mode cellular telephone system adapted for both an analog system and a digital CDMA system. A CDMA signal from a CDMA base station, and a narrow-band signal from an analog system are received through an antenna by a receiver, whereby they are amplified, subjected to frequency conversion, and input to a variable notch filter. A disturbing signal detection circuit supplies the variable notch filter with a control signal for varying its frequency. Namely, the disturbing signal detection circuit detects a case that an output level of the variable notch filter is at a minimum by changing the notch frequency via a series of sweeping control signals. A control signal at which the output level of the variable notch filter is at a minimum is then fed to the variable notch filter, thereby effectively suppressing any intermodulation distortions present in the mobile station.
摘要翻译：一种双模式蜂窝电话系统，其能够抑制适用于模拟系统和数字CDMA系统的双模蜂窝电话系统的移动台中出现的窄带干扰信号。来自CDMA基站的CDMA信号和来自模拟系统的窄带信号由接收机通过天线接收，由此被放大，进行频率转换并输入到可变陷波滤波器。干扰信号检测电路为可变陷波滤波器提供用于改变其频率的控制信号。也就是说，干扰信号检测电路通过一系列扫频控制信号来改变陷波频率来检测可变陷波滤波器的输出电平最小的情况。可变陷波滤波器的输出电平处于最小的控制信号然后被馈送到可变陷波滤波器，从而有效地抑制移动台中存在的任何互调失真。

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