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1. 发明申请

US20100054352A1 Correlation-based detection in a cognitive radio system 审中-公开
标题翻译：认知无线电系统中的相关检测
公开(公告)号：US20100054352A1
公开(公告)日：2010-03-04
申请号：US12231226
申请日：2008-08-28
申请人： Anu Huttunen , Jari Junell , Marko Kosunen
发明人： Anu Huttunen , Jari Junell , Marko Kosunen
IPC分类号： H03D1/00 , H04L27/28
CPC分类号： H04L27/0006
摘要： Samples are extracted from a received signal. For each of a plurality of candidate cyclic frequencies, cyclic covariance of the received signal is determined using a Fourier transform FT having a length that is less than the number of extracted samples. The frequency channel within which the signal was received is chosen for opportunistic/cognitive radio transmissions when none of the plurality of candidate cyclic frequencies exhibits a peak that exceeds a threshold, or results are transmitted for collaborative sensing. The extracted samples may be filtered and decimated prior to executing the FT, and the length of the FT depends on the number of samples that remain. Decimating is at a rate that depends on a bandwidth of the filtering. The bandwidth of filtering is determined by the lowest cyclic frequency where the signal to be detected exhibits cyclostationarity. Each of the candidate cyclic frequencies are near zero and determining the covariance employs a windowing function centered on zero cyclic frequency.
摘要翻译：从接收到的信号中提取样本。对于多个候选循环频率中的每一个，使用具有小于提取样本数的长度的傅里叶变换FT来确定接收信号的循环协方差。当多个候选循环频率中没有一个表现出超过阈值的峰值时，选择接收信号的频率信道用于机会/认知无线电传输，或者发送用于协作感测的结果。提取的样本可以在执行FT之前被过滤和抽取，并且FT的长度取决于保留的样本的数量。抽取的速率取决于过滤的带宽。滤波带宽由待检测信号呈现周期平稳性的最低周期频率决定。每个候选循环频率接近于零，并且确定协方差采用以零循环频率为中心的加窗函数。

2. 发明授权

US08526520B2 Cyclostationary signal detection in the angular domain for communication systems 有权
标题翻译：通信系统的角域中的循环信号检测
公开(公告)号：US08526520B2
公开(公告)日：2013-09-03
申请号：US13007939
申请日：2011-01-17
申请人： Vesa Turunen , Marko Kosunen
发明人： Vesa Turunen , Marko Kosunen
IPC分类号： H04L27/28
CPC分类号： H04L27/0006
摘要： Apparatuses and methods for providing efficient spectrum sensing and signal detection using cyclostationary based spectrum sensing algorithms. A method embodiment is provided, comprising: receiving input samples of a signal having expected predetermined properties; transforming the input samples to angular form and obtaining data samples corresponding to at least one angle vector; performing a cyclostationarity test on the at least one angle vector, the cyclostationarity test being done entirely in an angular domain; wherein the cyclostationarity test comprises testing the at least one angle vector for a non-uniform distribution, the non-uniform distribution of the at least one angle vector indicating cyclostationarity in the input samples; and where cyclostationarity in the input samples is determined, refraining from transmitting radio frequency signals over an air interface at a frequency corresponding to the received signal. Apparatuses for implementing the methods are also disclosed.
摘要翻译：使用基于循环平稳的频谱感知算法提供有效的频谱感测和信号检测的装置和方法。提供了一种方法实施例，包括：接收具有预期预定特性的信号的输入样本; 将输入样本转换为角形式并获得对应于至少一个角度矢量的数据样本; 对所述至少一个角度矢量执行循环平稳性测试，所述循环平稳性测试完全在角域中完成; 其中所述周期平稳性测试包括测试所述至少一个角度向量用于非均匀分布，所述至少一个角度向量的非均匀分布指示所述输入样本中的周期平稳性; 并且其中确定输入样本中的周期平稳性，避免以与接收到的信号相对应的频率通过空中接口发射射频信号。还公开了用于实现该方法的装置。

3. 发明申请

US20120183030A1 Cyclostationary Signal Detection in the Angular Domain for Communication Systems 有权
标题翻译：通信系统角域中的循环信号检测
公开(公告)号：US20120183030A1
公开(公告)日：2012-07-19
申请号：US13007939
申请日：2011-01-17
申请人： Vesa Turunen , Marko Kosunen
发明人： Vesa Turunen , Marko Kosunen
IPC分类号： H04B17/00
CPC分类号： H04L27/0006
摘要： Apparatuses and methods for providing efficient spectrum sensing and signal detection using cyclostationary based spectrum sensing algorithms. A method embodiment is provided, comprising: receiving input samples of a signal having expected predetermined properties; transforming the input samples to angular form and obtaining data samples corresponding to at least one angle vector; performing a cyclostationarity test on the at least one angle vector, the cyclostationarity test being done entirely in an angular domain; wherein the cyclostationarity test comprises testing the at least one angle vector for a non-uniform distribution, the non-uniform distribution of the at least one angle vector indicating cyclostationarity in the input samples; and where cyclostationarity in the input samples is determined, refraining from transmitting radio frequency signals over an air interface at a frequency corresponding to the received signal. Apparatuses for implementing the methods are also disclosed.
摘要翻译：使用基于循环平稳的频谱感知算法提供有效的频谱感测和信号检测的装置和方法。提供了一种方法实施例，包括：接收具有预期预定特性的信号的输入样本; 将输入样本转换为角形式并获得对应于至少一个角度矢量的数据样本; 对所述至少一个角度矢量执行循环平稳性测试，所述循环平稳性测试完全在角域中完成; 其中所述周期平稳性测试包括测试所述至少一个角度向量用于非均匀分布，所述至少一个角度向量的非均匀分布指示所述输入样本中的周期平稳性; 并且其中确定输入样本中的周期平稳性，避免以与接收到的信号相对应的频率通过空中接口发射射频信号。还公开了用于实现该方法的装置。

4. 发明授权

US07257609B1 Multiplier and shift device using signed digit representation 失效
标题翻译：乘数和移位装置使用有符号位表示
公开(公告)号：US07257609B1
公开(公告)日：2007-08-14
申请号：US10399178
申请日：2000-10-16
申请人： Marko Kosunen , Kari Halonen
发明人： Marko Kosunen , Kari Halonen
IPC分类号： G06F15/00 , G06F7/52
CPC分类号： G06F7/5272 , G06F5/015 , G06F7/533 , G06F9/3001 , G06F9/30025
摘要： The present invention proposes a multiplier device performing multiplication of different powers of two serially in time (not in parallel) in order to further reduce the area needed for a hardware realization. By virtue thereof, it is enabled to use only one adder in connection with the multiplication which contributes to a reduced hardware amount and reduced required area for the hardware. A shifter means based on binary weighted shifting is used for shifting in connection with the multiplication, thereby reducing the required hardware amount (number of multiplexers and hardwired shifting elements) and thus reducing the area for hardware implementation still further. The present invention can be used in applications using digital multiplication, such as in digital signal processing DSP, digital filters and/or finite impulse response filters FIR filters as well as programmable and/or adaptive digital filters. As the multiplier is represented in CSD coding, the number of necessary shifting operations can be reduced and the number of necessary additions can be reduced, thus contributing to a reduced area needed for a hardware realization of a shifting means and a multiplier device on a silicon chip.
摘要翻译：本发明提出一种乘法器装置，其在时间上（不是并行）串行地执行两个不同功率的乘法，以便进一步减小硬件实现所需的面积。由此，能够仅使用与乘法相关的一个加法器，这有助于降低硬件量并减少硬件所需的面积。基于二进制加权移位的移位装置用于与乘法相关的移位，从而减少所需的硬件量（多路复用器和硬连线移位元件的数量），从而进一步减少硬件实现的面积。本发明可以用于使用数字乘法的应用中，例如在数字信号处理DSP，数字滤波器和/或有限脉冲响应滤波器FIR滤波器以及可编程和/或自适应数字滤波器中。由于在CSD编码中表示乘法器，可以减少必要的移位操作的数量，并且可以减少必要的相加次数，从而有助于减少移位装置的硬件实现所需的面积和硅上的乘法器装置芯片。

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