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1. 发明授权

US06968021B1 Synchronization method and apparatus for modems based on jointly iterative turbo demodulation and decoding 有权
标题翻译：基于联合迭代turbo解调和解码的调制解调器的同步方法和装置
公开(公告)号：US06968021B1
公开(公告)日：2005-11-22
申请号：US09961666
申请日：2001-09-24
申请人： Steven L. White , Joseph C. Whited , Thomas L. Tapp , Rodney L. Mickelson
发明人： Steven L. White , Joseph C. Whited , Thomas L. Tapp , Rodney L. Mickelson
IPC分类号： H03D1/00 , H04L1/00 , H04L7/00 , H04L7/02 , H04L25/03 , H04L27/00
CPC分类号： H04L1/005 , H04L1/0054 , H04L1/0055 , H04L1/0065 , H04L1/0071 , H04L7/0062 , H04L25/03171 , H04L25/03197 , H04L2025/03407 , H04L2027/0048
摘要： A bandwidth efficient advanced modulation waveform modem using concatenated iterative turbo coding and continuous phase modulation is disclosed. A demodulator in the modem has a turbo decoder and a decision feedback carrier and time tracking algorithm to track a carrier and adjust timing. The decision feedback carrier and time tracking algorithm may use an APP decoder as a decision device to provide symbol decisions at a high error rate and low latency for a coded input data stream. A symbol phase estimator produces a symbol phase error estimate from the symbol decisions. An erasure decision function decides which symbol decisions are correct and which symbol decisions are erasures. A carrier tracking function receives the symbol phase error estimates when the symbol decisions are correct and receives erasure inputs when the symbol decisions are erasures to maintain carrier tracking.
摘要翻译：公开了一种使用级联迭代turbo编码和连续相位调制的带宽高效调制波形调制解调器。调制解调器中的解调器具有turbo解码器和用于跟踪载波并调整定时的判定反馈载波和时间跟踪算法。判定反馈载波和时间跟踪算法可以使用APP解码器作为决策设备，以便以高错误率和低延迟为编码的输入数据流提供符号决定。符号相位估计器从符号判定产生符号相位误差估计。擦除决策功能决定哪些符号决定是正确的，哪些符号决定是擦除。当符号判定是正确的时候，载波跟踪功能接收符号相位误差估计，并且当符号决定是擦除以维持载波跟踪时接收擦除输入。

2. 发明授权

US07835523B1 Cryptographic engine abstraction layer for a software defined radio 有权
标题翻译：用于软件定义无线电的加密引擎抽象层
公开(公告)号：US07835523B1
公开(公告)日：2010-11-16
申请号：US11213399
申请日：2005-08-26
申请人： Rodney L. Mickelson , Dipak P. Patel
发明人： Rodney L. Mickelson , Dipak P. Patel
IPC分类号： G06F12/14 , H04K1/00 , H04L9/00
CPC分类号： H04K1/00
摘要： A radio system comprises radio frequency receiving electronics and digital signal processing electronics coupled to the radio frequency receiving electronics. The radio system is characterized by security electronics coupled to the digital signal processing electronics. The security electronics comprise a cryptographic subsystem. The cryptographic subsystem comprises cryptographic equipment software, core cryptographic algorithms and a cryptographic engine abstraction layer hardware each of which is stacked with but separate from one another. The cryptographic engine abstraction layer hardware has been designed for the specific radio system design.
摘要翻译：无线电系统包括耦合到射频接收电子设备的射频接收电子设备和数字信号处理电子设备。无线电系统的特征在于耦合到数字信号处理电子器件的安全电子装置。安全电子设备包括密码子系统。加密子系统包括加密设备软件，核心加密算法和加密引擎抽象层硬件，每个硬件堆叠而彼此分开。加密引擎抽象层硬件是为特定的无线电系统设计而设计的。

3. 发明授权

US07088793B1 Equalizer for complex modulations in very noisy environments 有权
标题翻译：在非常嘈杂的环境中进行复杂调制的均衡器
公开(公告)号：US07088793B1
公开(公告)日：2006-08-08
申请号：US10124798
申请日：2002-04-17
申请人： Rodney L. Mickelson , Thomas L. Tapp , Steven L. White
发明人： Rodney L. Mickelson , Thomas L. Tapp , Steven L. White
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H04L25/03171 , H04L1/005 , H04L1/0066
摘要： An equalizer is used with complex modulation modems to reduce intersymbol interference. The equalizer includes an equalizer filter that receives an input data signal and adapts to compensate for the noisy communications channels to reduce intersymbol interference to the input signal. A branch metric computer demodulates the equalizer filter adapted input data signal. A decision device delivers an alpha value, starting phase information and confidence values from the demodulated input data signal. A gain determination function receives the confidence values and determines adaptation gain for the equalizer filter. A remodulator receives the alpha value and starting phase information and remodulates the alpha value and starting phase information into a remodulated data signal. A summing function compares the remodulated data signal to a delayed version of the input signal to generate an error signal for the equalizer filter to adjust the equalizer filter.
摘要翻译：均衡器与复数调制调制解调器一起使用以减少符号间干扰。均衡器包括均衡器滤波器，其接收输入数据信号并适于补偿有噪声的通信信道以减少对输入信号的符号间干扰。分支度量计算机解调均衡器滤波器适配输入数据信号。判定装置传送α值，从解调输入数据信号开始相位信息和置信度值。增益确定功能接收置信度值并确定均衡器滤波器的自适应增益。重新调制器接收α值和起始相位信息，并重新调制α值并将起始相位信息重新调入数据信号。求和功能将再调制的数据信号与输入信号的延迟版本进行比较，以产生用于均衡器滤波器的误差信号，以调整均衡器滤波器。

4. 发明授权

US5903194A Digital phase modulation of frequency synthesizer using modulated fractional division 失效
$Digital phase modulation of frequency synthesizer using modulated fractional division$
标题翻译：使用调制分数除法的频率合成器的数字相位调制
公开(公告)号：US5903194A
公开(公告)日：1999-05-11
申请号：US906413
申请日：1997-08-05
申请人： Paul L. Opsahl , Rodney L. Mickelson
发明人： Paul L. Opsahl , Rodney L. Mickelson
IPC分类号： H03C3/09 , H03L7/197 , H03L7/08
CPC分类号： H03C3/0933 , H03C3/0925 , H03L7/1976
摘要： A phase-locked loop frequency synthesizer system is provided using fractional frequency division and a fractional control number for phase modulating an output of the frequency synthesizer using an incoming information signal. The apparatus includes a delta-sigma converter which adjusts a divisor of the frequency divider by operating upon a magnitude modulated fractional frequency control number. The system further includes a differentiator which provides the magnitude modulated input stream to the delta-sigma modulator by modulating the fractional control number with detected differences in the incoming information signal.
摘要翻译：使用分数分频和使用输入信息信号相位调制频率合成器的输出的分数控制数来提供锁相环频率合成器系统。该装置包括一个Δ-Σ转换器，其通过对幅度调制的分数频率控制数进行操作来调节分频器的除数。该系统还包括一个微分器，其通过利用输入信息信号中检测到的差异调制分数控制数来向delta-sigma调制器提供幅度调制输入流。

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