Orthogonal Time Frequency Space (OTFS) is a 2D modulation technique that transforms the information carried in the Delay-Doppler coordinate system. The...
20 KB (2,280 words) - 09:58, 25 May 2025
In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission used in digital modulation for encoding digital...
88 KB (11,274 words) - 10:03, 25 May 2025
bilinear forms. Two elements u and v of a vector space with bilinear form B {\displaystyle B} are orthogonal when B ( u , v ) = 0 {\displaystyle B(\mathbf...
16 KB (2,695 words) - 18:06, 20 May 2025
Orthogonal frequency-division multiple access (OFDMA) is a multi-user version of the popular orthogonal frequency-division multiplexing (OFDM) digital...
8 KB (973 words) - 06:33, 7 April 2024
spectrum in wireless networks. Cohere holds the patents for the Orthogonal Time Frequency Space (OTFS) 2D modulation technique used to improve the performance...
10 KB (857 words) - 08:58, 11 January 2024
and 1 are orthogonal. A variant of MSK called Gaussian minimum-shift keying (GMSK) is used in the GSM mobile phone standard. Audio frequency-shift keying...
16 KB (1,913 words) - 03:39, 31 July 2024
is an Israeli electrical engineer known for his work on Orthogonal Time Frequency and Space (OTFS) and other engineering topics. He is the holder of...
16 KB (1,314 words) - 21:06, 23 May 2025
applications to signal processing. He is known for developing Orthogonal Time Frequency and Space (OTFS) modulating techniques, a method used for making wireless...
13 KB (1,118 words) - 00:18, 2 June 2025
Weighted L2 spaces like this are frequently used to study orthogonal polynomials, because different families of orthogonal polynomials are orthogonal with respect...
128 KB (17,469 words) - 06:51, 28 May 2025
Spacetime (redirect from Space-time interval)
also called the space-time continuum, is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional...
132 KB (19,765 words) - 09:00, 3 June 2025
has inspired advanced waveforms for high-mobility scenarios. Orthogonal Time–Frequency Space modulation leverages the Delay-Doppler grid to map data symbols...
11 KB (1,285 words) - 19:00, 17 March 2025
structure. More than one symbol can be carried in each grid of time-frequency lattice. Orthogonal polynomials of one variable defined by a non-negative measure...
15 KB (2,079 words) - 21:55, 22 May 2025
Channel access method (redirect from Time and Frequency division multiple access)
hub network get a different color. An advanced form of FDMA is the orthogonal frequency-division multiple access (OFDMA) scheme, for example, used in 4G...
18 KB (2,325 words) - 21:57, 7 April 2025
(2020), and Low Complexity Modem Structure for OFDM-Based Orthogonal Time Frequency Space Modulation (2017). There have also been publications dealing...
31 KB (3,192 words) - 23:32, 2 December 2024
analysis typically uses predetermined orthogonal functions, for example, sine and cosine functions at fixed frequencies. In some cases the two methods may...
3 KB (343 words) - 18:10, 29 February 2024
frequency-shift keying (MFSK) is a variation of frequency-shift keying (FSK) that uses more than two frequencies. MFSK is a form of M-ary orthogonal modulation...
17 KB (2,090 words) - 03:48, 15 May 2025
Heat of combustion International Electrotechnical Commission Orthogonal Time Frequency Space (OTFS) Perpetual motion Sensitivity (electronics) Solar cell...
30 KB (3,025 words) - 16:38, 24 May 2025
constant amplitude orthogonal block transforms including linear and non-linear phase types. GDFT is a framework to improve time and frequency domain properties...
76 KB (12,333 words) - 05:19, 3 May 2025
resulting in the invention of the telephone. Orthogonal frequency-division multiplexing (OFDM) Non-orthogonal frequency-division multiplexing (N-OFDM) White,...
9 KB (1,258 words) - 17:38, 10 April 2025
Least-squares spectral analysis (category Frequency)
required to least-squares partition the variance between orthogonal sinusoids of different frequencies. In the past, Fourier's was for many a method of choice...
28 KB (3,354 words) - 11:45, 30 May 2024
Interferometry (CI) is a spread spectrum scheme designed to be used in an Orthogonal Frequency-Division Multiplexing (OFDM) communication system for multiplexing...
13 KB (1,628 words) - 04:19, 16 December 2023
Alexander; Tchamitchian, Philippe (2012-12-06). Wavelets: Time-Frequency Methods and Phase Space Proceedings of the International Conference, Marseille,...
2 KB (169 words) - 03:37, 12 November 2024
Multiplexing (section Frequency-division multiplexing)
communications. Time-division multiplexing (TDM) is a digital (or in rare cases, analog) technology that uses time, instead of space or frequency, to separate...
22 KB (2,709 words) - 13:16, 31 May 2025
Radar engineering (category Radio frequency antenna types)
frequency-orthogonal (slotted waveguide), spatially orthogonal (switched beamforming networks), or time-orthogonal beams. In case of time-orthogonal scanning...
10 KB (1,410 words) - 15:24, 8 April 2024
Wavelet (category Time–frequency analysis)
may conclude that the space Vm with sampling distance 2m more or less covers the frequency baseband from 0 to 1/2m-1. As orthogonal complement, Wm roughly...
54 KB (7,207 words) - 00:41, 27 May 2025
Radio (section Time and frequency)
transmit digital signals, the frequency of the carrier wave is shifted between frequencies.: 58 Orthogonal frequency-division multiplexing (OFDM) –...
163 KB (16,284 words) - 23:08, 3 June 2025
function Poisson summation formula Paley-Wiener theorem Sobolev space Time–frequency representation Quantum Fourier transform Topological abelian group...
3 KB (202 words) - 12:10, 30 October 2023
specialized Doppler radar that uses the Doppler effect to measure the three orthogonal velocity components referenced to the aircraft. When aircraft true heading...
6 KB (641 words) - 23:35, 27 May 2025
Code-division multiple access (section Efficient practical utilization of the fixed frequency spectrum)
like (in advanced cases) quadrature amplitude modulation (QAM) or orthogonal frequency-division multiplexing (OFDM), which typically makes it very robust...
36 KB (4,745 words) - 22:05, 25 May 2025
distribution of frequencies (its spectrum), phases, and polarizations. Electromagnetic waves (such as light), traveling in free space or another homogeneous...
74 KB (9,420 words) - 04:37, 2 June 2025