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1.发明授权公开(公告)号：US08311075B2
公开(公告)日：2012-11-13
申请号：US12548574
申请日：2009-08-27
IPC分类号： H04B1/00
CPC分类号： H04L1/0047 , H04B1/713 , H04L1/0071 , H04L1/205 , H04L25/069
摘要： An improved method is provided for decoding data in a frequency hopping communications system. The method includes: monitoring transition points between data bits in a demodulated data stream, where the data bits are transmitted to a receiver over different transmission frequencies; determining a frequency over which data bits are transmitted to the receiver; determining a reliability metric for each frequency over which data bits were received, where the reliability metric is based on transition points of data bits transmitted over a given frequency; and performing a decoding operation using the reliability metric for each frequency over which data bits were received.
摘要翻译： 提供了一种用于在跳频通信系统中对数据进行解码的改进方法。 该方法包括：监视解调数据流中的数据位之间的转换点，其中数据位在不同的传输频率上发送到接收机; 确定将数据位发送到接收机的频率; 确定接收到数据比特的每个频率的可靠性度量，其中可靠性度量基于在给定频率上传输的数据比特的转换点; 以及使用针对接收到数据比特的每个频率的可靠性度量来执行解码操作。
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公开(公告)号：US07526428B2
公开(公告)日：2009-04-28
申请号：US10678222
申请日：2003-10-06
CPC分类号： G10L21/0208
摘要： A system and method for noise cancellation with noise ramp tracking in the presence of severe or ramping acoustic noise. The system conducts an estimation of the noise level in the input signal and modifies the signal based upon this noise estimate. A windowed Fourier transform is performed upon the input speech signal and an estimation of a histogram of the frequency magnitudes of the noise level and other related parameters is generated and used to compute a spectral gain function that is applied to components of the Fourier transform of the input speech signal. The enhanced components of the Fourier transform are processed by an inverse Fourier transform in order to reconstruct a noise reduced speech signal.
摘要翻译： 一种在存在严重或倾斜声学噪声的情况下通过噪声斜坡跟踪进行噪声消除的系统和方法。 该系统对输入信号中的噪声电平进行估计，并且基于该噪声估计修改信号。 对输入的语音信号执行加窗傅里叶变换，并且产生噪声电平和其它相关参数的频率幅度的直方图的估计，并用于计算应用于傅立叶变换的分量的频谱增益函数 输入语音信号。 通过傅里叶逆变换处理傅立叶变换的增强分量，以便重建噪声降低的语音信号。
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公开(公告)号：US07283069B2
公开(公告)日：2007-10-16
申请号：US11377492
申请日：2006-03-16
IPC分类号： H03M7/46
CPC分类号： H04B1/7156 , H04B1/70735 , H04B2001/71563 , H04L7/042
摘要： An improved method is provided for identifying a repeated codeword in an incoming bit stream. The method includes: receiving an incoming bit stream having an expected codeword repeated a number of times; determining whether a group of incoming data bits correlates to the expected codeword, where each of the incoming data bits in the group need not match the corresponding data bit of the expected codeword; and determining whether the expected code word is repeated over a sequence of incoming data bits.
摘要翻译： 提供了一种用于识别输入位流中的重复码字的改进方法。 该方法包括：接收重复多次的预期码字的输入比特流; 确定一组输入数据位是否与预期码字相关，其中组中的每个输入数据位不需要与预期码字的对应数据位匹配; 以及确定所输入的数据位序列中是否重复所述预期代码字。
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4.发明申请公开(公告)号：US20100284439A1
公开(公告)日：2010-11-11
申请号：US12824868
申请日：2010-06-28
申请人： Paul Edward Voglewede , Edwin McCall Leiby, III , Mark Walter Chamberlain , Patrick Lang , Fred C. Kellerman , Daniel Ernest Stephens
发明人： Paul Edward Voglewede , Edwin McCall Leiby, III , Mark Walter Chamberlain , Patrick Lang , Fred C. Kellerman , Daniel Ernest Stephens
IPC分类号： H04B1/713
CPC分类号： H04B1/7156 , H04B1/715 , H04B2001/7154
摘要： To avoid signal jamming, a method is provided for selecting a dwell channel on a receiver in a frequency hopping communication system. The method includes: measuring a noise level on channels over which a data signal is received at the receiver; selecting a dwell channel based on the estimated noise levels, where the dwell channel having the lowest noise level amongst a group of permissible channels over which to acquire a signal from a transmitter; and tuning the receiver to the selected dwell channel during a search state in which the receiver attempts to synchronize with a transmitter.
摘要翻译： 为了避免信号干扰，提供了一种用于在跳频通信系统中的接收机上选择驻留信道的方法。 该方法包括：测量在接收机处接收数据信号的信道上的噪声电平; 基于估计的噪声电平选择停留信道，其中驻留信道在从发射机获取信号的一组允许信道中具有最低噪声电平; 并且在接收机尝试与发射机同步的搜索状态期间将接收机调谐到所选择的驻留信道。
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5.发明授权公开(公告)号：US07782986B2
公开(公告)日：2010-08-24
申请号：US11377529
申请日：2006-03-16
申请人： Paul Edward Voglewede , Edwin McCall Leiby, III , Mark Walter Chamberlain , Patrick Lang , Fred C. Kellerman , Daniel Ernest Stephens
发明人： Paul Edward Voglewede , Edwin McCall Leiby, III , Mark Walter Chamberlain , Patrick Lang , Fred C. Kellerman , Daniel Ernest Stephens
CPC分类号： H04B1/7156 , H04B1/715 , H04B2001/7154
摘要： To avoid signal jamming, a method is provided for selecting a dwell channel on a receiver in a frequency hopping communication system. The method includes: measuring a noise level on channels over which a data signal is received at the receiver; selecting a dwell channel based on the estimated noise levels, where the dwell channel having the lowest noise level amongst a group of permissible channels over which to acquire a signal from a transmitter; and tuning the receiver to the selected dwell channel during a search state in which the receiver attempts to synchronize with a transmitter.
摘要翻译： 为了避免信号干扰，提供了一种用于在跳频通信系统中的接收机上选择驻留信道的方法。 该方法包括：测量在接收机处接收数据信号的信道上的噪声电平; 基于估计的噪声电平选择停留信道，其中驻留信道在从发射机获取信号的一组允许信道中具有最低噪声电平; 并且在接收机尝试与发射机同步的搜索状态期间将接收机调谐到所选择的驻留信道。
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6.发明授权公开(公告)号：US07653117B2
公开(公告)日：2010-01-26
申请号：US11377491
申请日：2006-03-16
IPC分类号： H04B1/00
CPC分类号： H04L1/0047 , H04B1/713 , H04L1/0071 , H04L1/205 , H04L25/069
摘要： An improved method is provided for decoding data in a frequency hopping communications system. The method includes: monitoring transition points between data bits in a demodulated data stream, where the data bits are transmitted to a receiver over different transmission frequencies; determining a frequency over which data bits are transmitted to the receiver; determining a reliability metric for each frequency over which data bits were received, where the reliability metric is based on transition points of data bits transmitted over a given frequency; and performing a decoding operation using the reliability metric for each frequency over which data bits were received.
摘要翻译： 提供了一种用于在跳频通信系统中对数据进行解码的改进方法。 该方法包括：监视解调数据流中的数据位之间的转换点，其中数据位在不同的传输频率上发送到接收机; 确定将数据位发送到接收机的频率; 确定接收到数据比特的每个频率的可靠性度量，其中可靠性度量基于在给定频率上传输的数据比特的转换点; 以及使用针对接收到数据比特的每个频率的可靠性度量来执行解码操作。
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7.发明授权公开(公告)号：US08165242B2
公开(公告)日：2012-04-24
申请号：US12824868
申请日：2010-06-28
申请人： Paul Edward Voglewede , Edwin McCall Leiby, III , Mark Walter Chamberlain , Patrick Lang , Fred C. Kellerman , Daniel Ernest Stephens
发明人： Paul Edward Voglewede , Edwin McCall Leiby, III , Mark Walter Chamberlain , Patrick Lang , Fred C. Kellerman , Daniel Ernest Stephens
CPC分类号： H04B1/7156 , H04B1/715 , H04B2001/7154
摘要： To avoid signal jamming, a method is provided for selecting a dwell channel on a receiver in a frequency hopping communication system. The method includes: measuring a noise level on channels over which a data signal is received at the receiver; selecting a dwell channel based on the estimated noise levels, where the dwell channel having the lowest noise level amongst a group of permissible channels over which to acquire a signal from a transmitter; and tuning the receiver to the selected dwell channel during a search state in which the receiver attempts to synchronize with a transmitter.
摘要翻译： 为了避免信号干扰，提供了一种用于在跳频通信系统中的接收机上选择驻留信道的方法。 该方法包括：测量在接收机处接收数据信号的信道上的噪声电平; 基于估计的噪声电平选择停留信道，其中驻留信道在从发射机获取信号的一组允许信道中具有最低噪声电平; 并且在接收机尝试与发射机同步的搜索状态期间将接收机调谐到所选择的驻留信道。
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8.发明申请公开(公告)号：US20090316754A1
公开(公告)日：2009-12-24
申请号：US12548574
申请日：2009-08-27
IPC分类号： H04B1/00
CPC分类号： H04L1/0047 , H04B1/713 , H04L1/0071 , H04L1/205 , H04L25/069
摘要： An improved method is provided for decoding data in a frequency hopping communications system. The method includes: monitoring transition points between data bits in a demodulated data stream, where the data bits are transmitted to a receiver over different transmission frequencies; determining a frequency over which data bits are transmitted to the receiver; determining a reliability metric for each frequency over which data bits were received, where the reliability metric is based on transition points of data bits transmitted over a given frequency; and performing a decoding operation using the reliability metric for each frequency over which data bits were received.
摘要翻译： 提供了一种用于在跳频通信系统中对数据进行解码的改进方法。 该方法包括：监视解调数据流中的数据位之间的转换点，其中数据位在不同的传输频率上发送到接收机; 确定将数据位发送到接收机的频率; 确定接收到数据比特的每个频率的可靠性度量，其中可靠性度量基于在给定频率上传输的数据比特的转换点; 以及使用针对接收到数据比特的每个频率的可靠性度量来执行解码操作。
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