• 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
  • Thumbnail for Orthogonal frequency-division multiplexing
    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
  • Thumbnail for Orthogonality
    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
  • Thumbnail for Orthogonal frequency-division multiple access
    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
  • Thumbnail for Cohere Technologies
    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
  • Thumbnail for Frequency-shift keying
    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
  • Thumbnail for Ronny Hadani
    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
  • Thumbnail for Hilbert space
    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
  • Thumbnail for Spacetime
    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 TimeFrequency 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
  • 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
  • Thumbnail for Linda Doyle
    (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
  • Thumbnail for Energy conversion efficiency
    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
  • Thumbnail for Discrete Fourier transform
    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
  • Thumbnail for Frequency-division multiplexing
    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
  • Thumbnail for Least-squares spectral analysis
    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
  • Thumbnail for Carrier interferometry
    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
  • Thumbnail for 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
  • Thumbnail for Wavelet
    Wavelet (category Timefrequency 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
  • Thumbnail for Radio
    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 Timefrequency 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
  • Thumbnail for Code-division multiple access
    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
  • Thumbnail for Polarization (waves)
    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