Huawei Technologies Canada Co., Ltd.

The University of British Columbia

Queen's University at Kingston

Peraso Technologies Inc.

Armaghan Eshaghi

Mahsa Salmani

Lutz Hans-Joachim Lampe

Enxiao Luan

Pradeep Persaud

Mitchell Nichols

Matrix multiplication is performed using a photonic computing block. Matrices are preprocessed to derive representative positive, real-valued matrices. The representative matrices are multiplied using a photonic computing block in which elements of a first matrix are encoded as a signal intensity and elements of a second matrix are encoded by tuning a spectral filter to apply a corresponding weight coefficient. Pairwise multiplications of matrix elements are performed by processing different wavelength components of an overall optical signal. A balanced photodiode receives the different wavelength components following manipulation in order to complete the multiplication. A matrix multiplication can be partitioned to fit a photonic computing block. The partitions are processed in parallel by multiple photonic computing blocks then reassembled into a final matrix. The multiplication operation can be part of a matrix inversion operation. Applications include (massive) multiple input multiple output (MIMO) precoding and detection, beamforming and other wireless communication applications.

Photonic computing system and method for wireless communication signal processing

A photonic device configured to perform matrix vector multiplication operations at high frequencies is provided. The vector being multiplied by the matrix is defined by vector components at specific wavelengths. The device includes a first waveguide and a second waveguide. A series of tunable microring resonators (MRRs) are coupled to the first waveguide and to a respective series of passive delay rings (PDRs), which are coupled to the second waveguide. Each MRR/PDR pair defines a tunable matrix component (tunable weight) for a respective wavelength component of the vector. A series of controllable delay elements (CDEs) such as all-pass filters are coupled to the first waveguide, upstream from the tunable MRRs. Any tuning dependent group delay caused by the MRR/PDR pairs can be compensated by controlling the CDEs such that each wavelength components has substantially a same delay as the other wavelength components.

Systems and methods to maintain phase relations of an optical signal in a photonic dot product engine

A phased array antenna system is provided, comprising a support member having a mounting surface; a plurality of electronic components supported on the mounting surface; an antenna supported on the support member adjacent to a perimeter of the mounting surface, for transmitting and receiving ultra-high frequency radio waves of wavelength &#x3bb;; and an enclosure. The enclosure includes a top portion and a bottom portion for enclosing the support member and a radome for enclosing the antenna. The center of curvature of the radome is positioned less than 1&#x3bb; from an end of the antenna. The thickness of the radome is approximately &#x3bb;/5 and the radius of the radome is less than 1&#x3bb;.

Enclosure for millimeter-wave antenna system

Growing community of inventors

Newmarket, Canada

Armaghan Eshaghi