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31. 发明申请

US20050281319A1 PACKET SPREAD-SPECTRUM RECEIVER 审中-公开
标题翻译：分组扩频接收机
公开(公告)号：US20050281319A1
公开(公告)日：2005-12-22
申请号：US11210849
申请日：2005-08-25
申请人： Donald Schilling
发明人： Donald Schilling
IPC分类号： H04B1/707 , H04B1/7093 , H04B7/212 , H04B7/216 , H04B15/00 , H04J13/00 , H04J13/10 , H04K1/00 , H04L27/30 , H04B1/713
CPC分类号： H04B1/707 , H04B1/7093 , H04J13/00 , H04J13/0022 , H04J13/10
摘要： A system and method for encoding and transmitting data with a spread-spectrum packet-switched system. Data to be transmitted by a packet transmitter are encoded for privacy and to restrict intelligent receipt of the data to the intended recipient. The encoded data is demultiplexed into sub-data-sequence signals which are spread-spectrum processed and then combined as a multichannel spread-spectrum signal. The multichannel spread-spectrum signal is concatenated with a header to output a packet-spread-spectrum signal which is transmitted over radio waves to a packet receiver. The packet receiver obtains timing for the multichannel spread-spectrum signal from the header. The multichannel spread-spectrum signal is then despread and multiplexed as received-encoded data. The received-encoded data is decoded by the intended recipient and stored in a receiver memory for output.
摘要翻译：一种利用扩频分组交换系统对数据进行编码和发送的系统和方法。由数据包发送器发送的数据被编码为隐私并且将数据的智能接收限制到预期的接收者。编码数据被解复用为子数据序列信号，其被扩频处理，然后被组合为多通道扩频信号。多信道扩频信号与报头相连，以将通过无线电波传输的分组扩展频谱信号输出到分组接收机。分组接收机从报头获得多信道扩频信号的定时。然后将多通道扩频信号解扩和复用为接收编码数据。接收编码的数据由预期接收者解码并存储在接收机存储器中用于输出。

32. 发明授权

US06956892B2 Receiver 失效
标题翻译：接收器
公开(公告)号：US06956892B2
公开(公告)日：2005-10-18
申请号：US09878861
申请日：2001-06-11
申请人： Juha Ylitalo
发明人： Juha Ylitalo
IPC分类号： H04B1/707 , H04B7/04 , H04L27/30
CPC分类号： H04B1/7075 , H04B1/7107 , H04B1/7117 , H04B7/0408 , H04B7/0491 , H04B2201/709727
摘要： A receiver receives signals which are at least partially known and which have followed a plurality of different paths to said receiver. The receiver has an arrangement for dividing the area of coverage of said receiver into a plurality of sections. A plurality of receiving units are provided to process a different one of said signals to identify the at least partially known part of said signal. A controller is coupled to the output of said dividing arrangement for selecting the signals which are to be allocated to the respective receiving units and an interference removing arrangement is coupled to the output of the receiver units to remove interference.
摘要翻译：接收机接收至少部分已知的信号，并且已经遵循到所述接收机的多条不同路径。接收机具有用于将所述接收机的覆盖区域划分成多个部分的布置。提供多个接收单元以处理不同的一个所述信号以识别所述信号的至少部分已知的部分。控制器耦合到所述分配装置的输出端，用于选择要分配给各个接收单元的信号，并且干扰去除装置耦合到接收机单元的输出以消除干扰。

33. 发明授权

US06954489B2 Determining correlations of received sequences to multiple known sequences in a communications system 失效
标题翻译：确定通信系统中接收到的序列与多个已知序列的相关性
公开(公告)号：US06954489B2
公开(公告)日：2005-10-11
申请号：US09753913
申请日：2001-01-02
申请人： Lars Svensson , Bengt Lindoff
发明人： Lars Svensson , Bengt Lindoff
IPC分类号： G06F17/15 , H04B15/00 , H04K1/00 , H04L27/30
CPC分类号： G06F17/15
摘要： A method, system, and apparatus enables interfering signals in a communications system to be efficiently identified using correlation calculations. Once identified, the interfering signals may be rejected and removed from further processing in a receiver. The number of mathematical operations required to determine correlates of multiple training sequences to received sequences (e.g., at multiple offsets) may be reduced by up to eighty percent (80%) in a Global System for Mobile Communications (GSM) implementation. In accordance with certain embodiments, a correlation equation is manipulated, for example, to eliminate certain products by ensuring that they equate to zero, to eliminate redundant calculations by recognizing repeated subsequences, to eliminate common subexpressions, to determine a negative of a correlation result, etc. The manipulated correlation equation is then utilized within a receiver.
摘要翻译：一种方法，系统和装置能够使用相关计算有效地识别通信系统中的干扰信号。一旦被识别，干扰信号可能被拒绝并从接收机中的进一步处理中去除。在全球移动通信系统（GSM）实施中，确定多个训练序列与接收序列（例如，多个偏移量）的相关性所需的数学运算的数量可以减少高达百分之八十（80％）。根据某些实施例，例如通过确定它们等于零来操纵相关方程来消除某些产品，以通过识别重复的子序列来消除冗余计算，消除共同的子表达式，以确定相关结果的否定，然后在接收机内利用操纵的相关方程。

34. 发明授权

US06954482B2 Soft-decision trellis-coded differential frequency-hopped spread spectrum (DFHSS) 有权
标题翻译：软决策网格编码差分跳频扩频（DFHSS）
公开(公告)号：US06954482B2
公开(公告)日：2005-10-11
申请号：US10422340
申请日：2003-04-24
申请人： Diane G. Mills , Cory S. Myers , Geoffrey S. Edelson , David L. Herrick
发明人： Diane G. Mills , Cory S. Myers , Geoffrey S. Edelson , David L. Herrick
IPC分类号： H04B1/713 , H04L1/00 , H04L27/30
CPC分类号： H04L1/006 , H04B1/713 , H04B2001/7152 , H04L1/0054
摘要： A method and system begin at a random node of a trellis model having a set of at least two axes, wherein one axis corresponds to time and a second axis corresponds to frequency, a set of M states, corresponding to a set of all possible frequencies that may be transmitted by the system, and branches leaving each state, that terminate at allowable transmit frequencies for a next frequency hop. The number of branches leaving each state is dependent on the number of encoded bits per hop. Next, B bits of data are passed to a buffer, where B is the number of bits that will be transmitted per frequency hop. The method and system then combine the B bits of data with information for previously selected frequencies to select a current frequency, transmit the selected frequency, and feedback the currently selected frequency information to be used as previously selected frequency information when selecting a next frequency.
摘要翻译：一种方法和系统从具有一组至少两个轴的网格模型的随机节点开始，其中一个轴对应于时间，第二轴对应于频率，一组M个状态，对应于一组所有可能的频率可以由系统发送，并且离开每个状态的分支，以可允许的发射频率终止下一个跳频。离开每个状态的分支数取决于每跳的编码比特数。接下来，将B位数据传送到缓冲器，其中B是每跳频将被发送的位数。该方法和系统然后将B位数据与先前选择的频率的信息组合以选择当前频率，发送所选择的频率，并且在选择下一个频率时反馈当前选择的频率信息以用作先前选择的频率信息。

35. 发明授权

US06940841B2 Packet-switched spread-spectrum system 有权
标题翻译：分组交换扩频系统
公开(公告)号：US06940841B2
公开(公告)日：2005-09-06
申请号：US09793433
申请日：2001-02-27
申请人： Donald L. Schilling
发明人： Donald L. Schilling
IPC分类号： H04B1/707 , H04B1/7093 , H04B7/212 , H04B7/216 , H04B15/00 , H04J13/00 , H04J13/10 , H04K1/00 , H04L27/30 , H04B1/69
CPC分类号： H04B1/707 , H04B1/7093 , H04J13/00 , H04J13/0022 , H04J13/10
摘要： A system and method for encoding and transmitting data with a spread-spectrum packet-switched system. Data to be transmitted by a packet transmitter are encoded for privacy and to restrict intelligent receipt of the data to the intended recipient. The encoded data is demultiplexed into sub-data-sequence signals which are spread-spectrum processed and then combined as a multichannel spread-spectrum signal. The multichannel spread-spectrum signal is concatenated with a header to output a packet-spread-spectrum signal which is transmitted over radio waves to a packet receiver. The packet receiver obtains timing for the multichannel spread-spectrum signal from the header. The multichannel spread-spectrum signal is then despread and multiplexed as received-encoded data. The received-encoded data is decoded by the intended recipient and stored in a receiver memory for output.
摘要翻译：一种利用扩频分组交换系统对数据进行编码和发送的系统和方法。由数据包发送器发送的数据被编码为隐私并且将数据的智能接收限制到预期的接收者。编码数据被解复用为子数据序列信号，其被扩频处理，然后被组合为多通道扩频信号。多信道扩频信号与报头相连，以将通过无线电波传输的分组扩展频谱信号输出到分组接收机。分组接收机从报头获得多信道扩频信号的定时。然后将多通道扩频信号解扩和复用为接收编码数据。接收编码的数据由预期接收者解码并存储在接收机存储器中用于输出。

36. 发明授权

US06925106B2 Predistortion type distortion compensation apparatus 有权
标题翻译：预失真型失真补偿装置
公开(公告)号：US06925106B2
公开(公告)日：2005-08-02
申请号：US09880958
申请日：2001-06-15
申请人： Masato Horaguchi , Naoki Hongo , Takashi Uchida , Masaki Suto , Toshio Takada
发明人： Masato Horaguchi , Naoki Hongo , Takashi Uchida , Masaki Suto , Toshio Takada
IPC分类号： H03F1/32 , H04B1/04 , H04B1/707 , H04J13/00 , H04L27/30
CPC分类号： H03F1/3247 , H03F1/3282 , H03F2200/102 , H03F2201/3233
摘要： To update the control value to a value of higher precision in a predistortion type distortion compensation apparatus for compensating the distortion occurring in an amplifier for amplifying an input signal by the control using a control value corresponding to the level of the input signal.Distortion generating means (1) generates distortion in an input signal, input signal level detecting means (3) detects the level of the input signal, distortion control means (4) controls the distortion generated by the distortion generating means 1 by using a control value corresponding to the level of the detected input signal, distortion component level detecting means (7) detects the level of distortion component contained in the amplified signal issued from the amplifier (2), integrating means K1 to KN integrate the level of the distortion component detected at every level of the detected input signal, and control value updating means (10) updates the control value corresponding to the level so that the integration result at every level of the input signal may be small.
摘要翻译：在预失真型失真补偿装置中，通过使用与输入信号的电平相对应的控制值进行控制来补偿放大器放大输入信号的失真的预失真型失真补偿装置，将控制值更新为更高的精度值。失真产生装置（1）在输入信号中产生失真，输入信号电平检测装置（3）检测输入信号的电平，失真控制装置（4）通过使用控制值来控制失真发生装置1产生的失真对应于检测到的输入信号的电平，失真分量电平检测装置（7）检测从放大器（2）发出的放大信号中包含的失真分量的电平，积分装置K 1至K N将失真分量在检测到的输入信号的各个级别检测到，并且控制值更新装置（10）更新与电平相对应的控制值，使得输入信号的每个级别的积分结果可能较小。

37. 发明授权

US06917644B2 Spread spectrum receiver with multi-path correction 失效
标题翻译：具有多径校正的扩频接收机
公开(公告)号：US06917644B2
公开(公告)日：2005-07-12
申请号：US09735249
申请日：2000-12-11
申请人： Charles R. Cahn , Mangesh Chansarkar , Sanjai Kohli
发明人： Charles R. Cahn , Mangesh Chansarkar , Sanjai Kohli
IPC分类号： G01C21/26 , G01C22/00 , G01S1/00 , G01S5/14 , G01S19/48 , H04B1/707 , H04B1/7085 , H04B1/7115 , H04B7/216 , H04L27/30
CPC分类号： H04B1/7085 , G01C21/26 , G01C22/00 , G01S19/11 , G01S19/22 , G01S19/29 , G01S19/30 , G01S19/37 , G01S19/47 , H04B1/707 , H04B1/7115 , H04B7/216 , H04B2001/70706 , H04B2201/70715
摘要： A spread spectrum receiver uses a comparison of the magnitude of the code correlation amplitudes at equal power at a one chip spacing to the magnitude at a central position there between to determine if multipath interference is present. The lead or lag error from constructive or destructive multipath interference may also be determined. Inaccuracies due to such interference may then be corrected or minimized by, for example, determining the residual code phase error and/or the prompt or accurate code phase delay.
摘要翻译：扩频接收机使用在一个码片间隔处的相等功率处的码相关幅度的幅度与其间的中心位置处的幅度的比较，以确定是否存在多径干扰。也可以确定建构性或破坏性多路径干扰的引导或延迟误差。然后可以通过例如确定残余码相位误差和/或提示或准确的码相位延迟来校正或最小化由于这种干扰导致的不准确性。

38. 发明授权

US06909738B2 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：US06909738B2
公开(公告)日：2005-06-21
申请号：US09826260
申请日：2001-04-04
申请人： David Akopian , Ilkka Kontola , Harri Valio , Seppo Turunen
发明人： David Akopian , Ilkka Kontola , Harri Valio , Seppo Turunen
IPC分类号： H04B1/707 , H04L27/00 , H04L27/227 , H04L27/30
CPC分类号： G01S19/29 , H04B1/7075 , H04B2201/70715 , H04L27/2272 , H04L2027/0057 , H04L2027/0065
摘要： The invention relates to a method for acquiring a receiver (1) into a code modulated spread spectrum signal received by the receiver (1). In the method at least one replica code (r) is used which corresponds to a code used with the modulation having a pre-determined number of chips, and an examination phase is performed, in which a frequency shift of the signal within a selected frequency area is examined, and a code phase of the code used with the modulation is examined. In the method the frequency shift examination is divided into a first estimation phase and a second estimation phase, wherein in the first estimation phase the selected frequency area is divided into a first set of frequencies, and in the second estimation phase a second set of frequencies is examined nearby each frequency of the first set of frequencies. Further, a comparison for frequencies of the second set of frequencies is performed using the received signal and the replica code (r), and the results of the comparison are used to estimate the correct frequency shift.
摘要翻译：本发明涉及一种用于将接收机（1）采集到由接收机（1）接收的码调制扩频信号中的方法。在该方法中，使用至少一个复制码（r），其对应于具有预定数量的码片的调制使用的码，并且执行检查相位，其中在所选频率内的信号的频移检查区域，并且检查与调制一起使用的代码的代码相位。在该方法中，频移检查被分为第一估计阶段和第二估计阶段，其中在第一估计阶段中，将所选择的频率区域划分为第一组频率，在第二估计阶段中，将第二组频率在第一组频率的每个频率附近检查。此外，使用接收信号和复制码（r）进行第二组频率的频率比较，并且比较结果用于估计正确的频移。

39. 发明授权

US06891881B2 Method of determining an end of a transmitted frame in a frame-based communications network 有权
标题翻译：在基于帧的通信网络中确定发送帧的结束的方法
公开(公告)号：US06891881B2
公开(公告)日：2005-05-10
申请号：US09825775
申请日：2001-04-04
申请人： Jason Alexander Trachewsky , Eric Ojard , Srinivasa Garlapati , Alan Corry
发明人： Jason Alexander Trachewsky , Eric Ojard , Srinivasa Garlapati , Alan Corry
IPC分类号： H04J3/06 , H04L1/00 , H04L1/08 , H04L1/12 , H04L1/18 , H04L12/413 , H04M11/00 , H04M11/06 , H04L27/30
CPC分类号： H04L1/0005 , H04L1/0003 , H04L1/0006 , H04L1/0009 , H04L1/0025 , H04L1/0061 , H04L1/0072 , H04L1/08 , H04L1/18 , H04L1/1809 , H04L1/1848 , H04L1/1877 , H04L1/1883 , H04L1/1887 , H04L1/20 , H04L12/40032 , H04L12/4013 , H04L12/40136 , H04L12/40156 , H04L12/40163 , H04L12/403 , H04L12/4035 , H04L12/407 , H04L12/413 , H04L12/417 , H04L2001/0093 , H04L2001/125 , H04M11/00 , H04M11/06 , Y02D50/10
摘要： A method of determining an end of a transmitted frame at a receiver on a frame-based communications network. An end of frame format for the transmitted frame is provided having an end of frame plurality of symbols. A received transmitted frame is filtered using filter coefficients matched to the end of frame plurality of symbols to provide a correlation sequence low-pass filtered signal. A squared magnitude of the correlation sequence is computed. The squared magnitude of the correlation sequence is low-pass filtered to provide a low-pass filtered correlation signal. The low-pass filtered correlation signal is delayed to provide a delayed low-pass filtered correlation signal. The delayed low-pass filtered correlation signal is multiplied by a fixed predetermined threshold to provide a multiplied correlation signal. The multiplied correlation signal is compared with the low-pass filtered correlation signal to provide a match/no match comparison indicative of the possible end of a transmitted frame.
摘要翻译：一种在基于帧的通信网络上的接收机处确定发送帧的结束的方法。提供了用于发送帧的帧格式的结尾，其具有多个符号的帧的结尾。使用与帧多个符号的末尾相匹配的滤波器系数对接收到的发送帧进行滤波，以提供相关序列低通滤波信号。计算相关序列的平方幅度。对相关序列的平方幅进行低通滤波，以提供低通滤波的相关信号。低通滤波相关信号被延迟以提供延迟的低通滤波相关信号。将经延迟的低通滤波相关信号乘以固定的预定阈值以提供相乘后的相关信号。将相乘的相关信号与低通滤波的相关信号进行比较，以提供指示发送帧的可能结束的匹配/不匹配比较。

40. 发明授权

US06885692B2 Efficient spreader for spread spectrum communication systems 有权
标题翻译：用于扩频通信系统的高效扩展器
公开(公告)号：US06885692B2
公开(公告)日：2005-04-26
申请号：US09810596
申请日：2001-03-16
申请人： Raj Mani Misra , Gregory S. Teal
发明人： Raj Mani Misra , Gregory S. Teal
IPC分类号： H04B1/707 , H04J13/00 , H04J13/10 , H04J13/16 , H04L27/30
CPC分类号： H04J13/16 , H04B1/707 , H04B2201/70703 , H04B2201/70706 , H04J13/0074 , H04J13/0077 , H04J13/10 , H04J13/107
摘要： A spreading system and method for CDMA applications that requires fewer integer multiplications. User data is spread using real or complex integer based spreading codes of length SF to SFmax chips. At least one of the codes is of the form jn·ν[n] where ν[n] is a spreading code. The invention provides increased user separation using a plurality of spreading codes.
摘要翻译： CDMA应用的扩展系统和方法，需要较少的整数乘法。使用长度为SF至SF最大码片的实数或复数整数扩展码扩展用户数据。代码中的至少一个是形式为n，nu [n]的形式，其中nu [n]是扩展码。本发明使用多个扩展码提供增加的用户分离。

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