公开(公告)号：US20180052219A1

公开(公告)日：2018-02-22

申请号：US15556656

申请日：2016-05-17

Applicant: King Abdullah University of Science and Technology

Inventor： Sajid AHMED ,  Taha BOUCHOUCHA ,  Tareq AL-NAFFOURI ,  Mohamed-Slim ALOUINI

IPC: G01S7/02

CPC classification number: G01S7/02 ,  A61K39/12 ,  A61K2039/545 ,  C12N2710/10041 ,  C12N2710/10043 ,  C12N2760/14034 ,  C12N2760/14134 ,  C12N2760/14234 ,  G01S13/878 ,  G01S13/89

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.