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1. 发明授权

US06907235B2 Apparatus and method for canceling DC offset in communications signals 有权
标题翻译：消除通信信号中直流偏移的装置和方法
公开(公告)号：US06907235B2
公开(公告)日：2005-06-14
申请号：US09953835
申请日：2001-09-17
申请人： Layne Lisenbee
发明人： Layne Lisenbee
IPC分类号： H04B1/12 , H04B1/30 , H04L25/06 , H04B1/10
CPC分类号： H04L25/061 , H04B1/123 , H04B1/30
摘要： An apparatus for removing DC offset in a received data signal is presented. The apparatus measures the DC offset present in a data symbol and uses it to generate a compensation value which is then removed from a future data symbol. An enable signal is used to prevent updating of the compensation value during the reception of a data symbol.
摘要翻译：提出了一种用于去除接收到的数据信号中的DC偏移的装置。该装置测量存在于数据符号中的DC偏移，并使用它来产生补偿值，然后将其从未来的数据符号中移除。使用使能信号来防止在接收数据符号期间补偿值的更新。

2. 发明授权

US07492293B2 Variable rate analog-to-digital converter 有权
标题翻译：可变速率模数转换器
公开(公告)号：US07492293B2
公开(公告)日：2009-02-17
申请号：US11692767
申请日：2007-03-28
申请人： Robert Townsend Short , Ghobad Heidari-Bateni , Layne Lisenbee
发明人： Robert Townsend Short , Ghobad Heidari-Bateni , Layne Lisenbee
IPC分类号： H03M1/00
CPC分类号： H03M1/002 , H03M1/12 , H03M1/124 , H03M1/126
摘要： An analog-to-digital converter can use a variable sampling rate. By using a variable sampling rate analog-to-digital converter and an anti-aliasing filter lower sampling rates, and accordingly, generally lower power consumption may be achieved. For example, a lower sampling rate can be used when it is determined that no undesirable signals are present and a higher sampling period can be used when an undesirable signal is present. Determining the presence of an undesired signal can be based on signal-to-noise ratio, over-sampling, bit error rate, using a detector, etc. An undesirable signal can be any signal that is close in frequency to a signal of interest or a signal farther away in frequency that has a relatively high amplitude. Sampling rate can be varied in a binary fashion, stepwise, continuously, etc.
摘要翻译：模数转换器可以使用可变采样率。通过使用可变采样率模数转换器和抗混叠滤波器较低的采样率，因此可以实现一般较低的功耗。例如，当确定不存在不期望的信号时可以使用更低的采样率，并且当存在不期望的信号时可以使用较高的采样周期。确定不需要的信号的存在可以基于信噪比，过采样，误码率，使用检测器等。不期望的信号可以是与感兴趣的信号频率接近的任何信号，或者频率更远的信号具有相对较高的振幅。采样率可以二进制变化，逐步，连续等。

3. 发明授权

US06999534B2 Method for mitigating DC offset in a sign bit correlator 有权
标题翻译：用于减轻符号位相关器中的直流偏移的方法
公开(公告)号：US06999534B2
公开(公告)日：2006-02-14
申请号：US10210701
申请日：2002-07-31
申请人： Jeff E. Taarud , Richard G. C. Williams , G. Layne Lisenbee
发明人： Jeff E. Taarud , Richard G. C. Williams , G. Layne Lisenbee
IPC分类号： H04L27/06
CPC分类号： H04L25/4915
摘要： A method 10 is provided to mitigate DC offset in a sign bit correlator associated with a packet detection circuit. The input sign pattern is monitored; and if a long run of the same sign is seen, a sign bit is replaced with a bit generated using a desired pseudorandom noise (PN) sequence. This ensures that the correlator only reacts substantially to correlations that are not due to DC offset.
摘要翻译：提供方法10以减轻与分组检测电路相关联的符号位相关器中的DC偏移。监控输入符号模式; 并且如果看到相同符号的长时间，则使用使用期望的伪随机噪声（PN）序列生成的比特来替换符号位。这确保相关器仅基本上对不是由于DC偏移造成的相关性作出反应。

4. 发明申请

US20080238717A1 VARIABLE RATE ANALOG-TO-DIGITAL CONVERTER 有权
标题翻译：可变速率模拟数字转换器
公开(公告)号：US20080238717A1
公开(公告)日：2008-10-02
申请号：US11692767
申请日：2007-03-28
申请人： Robert Townsend Short , Ghobad Heidari-Bateni , Layne Lisenbee
发明人： Robert Townsend Short , Ghobad Heidari-Bateni , Layne Lisenbee
IPC分类号： H04M3/22
CPC分类号： H03M1/002 , H03M1/12 , H03M1/124 , H03M1/126
摘要： According to various embodiments of the invention a variable rate analog-to-digital converter can be used in conjunction with an anti-aliasing filter to allow the use of lower sampling rates, and accordingly, generally lower power consumption. For example, a lower sampling rate can be used when it is determined that no undesirable signals are present and a higher sampling period can be used when an undesirable signal is present. Determining the presence of an undesired signal can be based on signal-to-noise ratio, over-sampling, bit error rate, using a detector, etc. An undesirable signal can be any signal that is close in frequency to a signal of interest or signals farther away in frequency that has a relatively high amplitude. Sampling rate can be varied in a binary fashion, stepwise, continuously, etc.
摘要翻译：根据本发明的各种实施例，可变速率模数转换器可以与抗混叠滤波器一起使用，以允许使用较低的采样率，并因此通常降低功耗。例如，当确定不存在不期望的信号时可以使用更低的采样率，并且当存在不期望的信号时可以使用较高的采样周期。确定不需要的信号的存在可以基于信噪比，过采样，误码率，使用检测器等。不期望的信号可以是与感兴趣的信号频率接近的任何信号，或者信号在具有相对较高幅度的频率上更远。采样率可以二进制变化，逐步，连续等。

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