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公开(公告)号：US10775476B2
公开(公告)日：2020-09-15
申请号：US15556656
申请日：2016-05-17
Inventor： Sajid Ahmed , Taha Bouchoucha , Tareq Al-Naffouri , Mohamed-Slim Alouini
Abstract: Various examples of methods and systems are provided for direct closed-form finite alphabet constant-envelope waveforms for planar array beampatterns. In one example, a method includes defining a waveform covariance matrix based at least in part upon a two-dimensional fast Fourier transform (2D-FFT) analysis of a frequency domain matrix Hf associated with a planar array of antennas. Symbols can be encoded based upon the waveform covariance matrix and the encoded symbols can be transmitted via the planar array of antennas. In another embodiment, a system comprises an N×M planar array of antennas and transmission circuitry configured to transmit symbols via a two-dimensional waveform beampattern defined based at least in part upon a 2D-FFT analysis of a frequency domain matrix Hf associated with the planar array of antennas.
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2.发明授权Apparatus and method for wireless monitoring using ultra-wideband frequencies 有权使用超宽带频率进行无线监测的装置和方法公开(公告)号：US09532735B2
公开(公告)日：2017-01-03
申请号：US14522005
申请日：2014-10-23
Inventor： Furrukh Sana , Tarig Ballal Khidir Ahmed , Tareq Al-Naffouri , Ibrahim Hoteit
CPC classification number: A61B5/113 , A61B5/05 , A61B5/7207 , G06F19/00 , G06F19/3418 , H04B1/7163
Abstract: A system for and a method of wirelessly monitoring one or more patients can include transmitting ultra-wideband pulses toward the one or more patients, receiving ultra-wideband signals, and sampling the ultra-wideband signals. Sampling the ultra-wideband pulses can be performed with a sample rate that is less than the Nyquist rate. Impulse response can be estimated and/or recovered by exploiting sparsity of the impulse response.
Abstract translation: 无线监测一个或多个患者的系统和方法可以包括向一个或多个患者发送超宽带脉冲，接收超宽带信号以及对超宽带信号进行采样。 可以以小于奈奎斯特速率的采样率来执行超宽带脉冲的采样。 可以通过利用脉冲响应的稀疏性来估计和/或恢复脉冲响应。
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