Related Research Articles
In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a type of digital transmission used in digital modulation for encoding digital (binary) data on multiple carrier frequencies. OFDM has developed into a popular scheme for wideband digital communication, used in applications such as digital television and audio broadcasting, DSL internet access, wireless networks, power line networks, and 4G/5G mobile communications.
Digital subscriber line is a family of technologies that are used to transmit digital data over telephone lines. In telecommunications marketing, the term DSL is widely understood to mean asymmetric digital subscriber line (ADSL), the most commonly installed DSL technology, for Internet access.
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is encoded on a carrier signal by periodically shifting the frequency of the carrier between several discrete frequencies. The technology is used for communication systems such as telemetry, weather balloon radiosondes, caller ID, garage door openers, and low frequency radio transmission in the VLF and ELF bands. The simplest FSK is binary FSK, in which the carrier is shifted between two discrete frequencies to transmit binary information.
In radio communication, a transceiver is an electronic device which is a combination of a radio transmitter and a receiver, hence the name. It can both transmit and receive radio waves using an antenna, for communication purposes. These two related functions are often combined in a single device to reduce manufacturing costs. The term is also used for other devices which can both transmit and receive through a communications channel, such as optical transceivers which transmit and receive light in optical fiber systems, and bus transceivers which transmit and receive digital data in computer data buses.
Wireless communication is the transfer of information (telecommunication) between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most common wireless technologies use radio waves. With radio waves, intended distances can be short, such as a few meters for Bluetooth, or as far as millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of applications of radio wireless technology include GPS units, garage door openers, wireless computer mouse, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones. Somewhat less common methods of achieving wireless communications involve other electromagnetic phenomena, such as light and magnetic or electric fields, or the use of sound.
Multichannel multipoint distribution service (MMDS), formerly known as broadband radio service (BRS) and also known as wireless cable, is a wireless telecommunications technology, used for general-purpose broadband networking or, more commonly, as an alternative method of cable television programming reception.
This is an index of articles relating to electronics and electricity or natural electricity and things that run on electricity and things that use or conduct electricity.
Data Over Cable Service Interface Specification (DOCSIS) is an international telecommunications standard that permits the addition of high-bandwidth data transfer to an existing cable television (CATV) system. It is used by many cable television operators to provide cable Internet access over their existing hybrid fiber-coaxial (HFC) infrastructure. Bandwidth is shared among users of an HFC, within service groups which are groups of customers that share RF channels. DOCSIS is used within service groups to provide internet access.
Terayon Communication Systems, Inc. was a company that vended equipment to broadband service providers for delivering broadband voice, video and data services to residential and business subscribers.
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates oscillating electrical energy, often characterized as a wave. They can be received by other antennas connected to a radio receiver, this is the fundamental principle of radio communication. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications.
A modulator-demodulator, commonly referred to as a modem, is a computer hardware device that converts data from a digital format into a format suitable for an analog transmission medium such as telephone or radio. A modem transmits data by modulating one or more carrier wave signals to encode digital information, while the receiver demodulates the signal to recreate the original digital information. The goal is to produce a signal that can be transmitted easily and decoded reliably. Modems can be used with almost any means of transmitting analog signals, from light-emitting diodes to radio.
International Mobile Telecommunications-Advanced are the requirements issued by the ITU Radiocommunication Sector (ITU-R) of the International Telecommunication Union (ITU) in 2008 for what is marketed as 4G mobile phone and Internet access service.
In telecommunications, 5G is the fifth-generation technology standard for cellular networks, which cellular phone companies began deploying worldwide in 2019, and is the successor to 4G technology that provides connectivity to most current mobile phones.
Multiple-input, multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) is the dominant air interface for 4G and 5G broadband wireless communications. It combines multiple-input, multiple-output (MIMO) technology, which multiplies capacity by transmitting different signals over multiple antennas, and orthogonal frequency-division multiplexing (OFDM), which divides a radio channel into a large number of closely spaced subchannels to provide more reliable communications at high speeds. Research conducted during the mid-1990s showed that while MIMO can be used with other popular air interfaces such as time-division multiple access (TDMA) and code-division multiple access (CDMA), the combination of MIMO and OFDM is most practical at higher data rates.
Non-orthogonal frequency-division multiplexing (N-OFDM) is a method of encoding digital data on multiple carrier frequencies with non-orthogonal intervals between frequency of sub-carriers. N-OFDM signals can be used in communication and radar systems.
5G NR is a radio access technology (RAT) developed by the 3rd Generation Partnership Project (3GPP) for the 5G mobile network. It was designed to be the global standard for the air interface of 5G networks. It is based on orthogonal frequency-division multiplexing (OFDM), as is the 4G long-term evolution (LTE) standard.
Orthogonal Time Frequency Space (OTFS) is a 2D modulation technique that transforms the information carried in the Delay-Doppler coordinate system. The information is transformed in the similar time-frequency domain as utilized by the traditional schemes of modulation such as TDMA, CDMA, and OFDM. It was first used for fixed wireless, and is now a contending waveform for 6G technology due to its robustness in high-speed vehicular scenarios.
Ronny Hadani is an Israeli-American mathematician, specializing in representation theory and harmonic analysis, with applications to signal processing. He is known for developing Orthogonal Time Frequency and Space (OTFS) modulating techniques, a method used for making wireless 5G communications faster, that is also being considered for use in 6G technology. The technology is being used by several wireless 5G related companies and Cohere Technologies, a company he has co-founded.
Delay Doppler coordinates are coordinates typically used in a radar technology-inspired approach to measurement. When used in wireless communication, the Delay Doppler domain mirrors the geometry of the reflectors comprising the wireless channel, which changes far more slowly than the phase changes experienced in the rapidly varying time-frequency domain.
Cohere Technologies is a telecoms software company based in San Jose, California that develops technology for boosting the network performance of 4G and 5G spectrum in wireless networks. Cohere holds the patents for the Orthogonal Time Frequency Space (OTFS) 2D modulation technique used to improve the performance of 4G and 5G networks and is being considered as a waveform for the future 6G wireless standard.
References
- 1 2 "Google Patents". patents.google.com.
- ↑ US 8547988,Hadani, Ronny&Rakib, Selim Shlomo,"Communications method employing orthonormal time-frequency shifting and spectral shaping",issued 2011-05-26
- ↑ "Cohere Technologies' CEO Shlomo Rakib discusses OTFS and wireless modulation technology". FierceTelecom.
- ↑ Lead, Telecom (February 2, 2021). "Cohere software improves efficiency of mobile network".
- 1 2 3 Baumgartner, LR Cable News Analysis Jeff; Editor, Senior; Reading 8/16/2007, Light. "Terayon Founders Helm Stealthy Startup". Light Reading.
{{cite web}}:|last2=has generic name (help)CS1 maint: numeric names: authors list (link) - 1 2 https://www.sec.gov/Archives/edgar/data/1052303/000089843001500308/d10ka.txt [ bare URL plain text file ]
- ↑ "Fellowships – PRESIDENT'S REPORT 2020".
- 1 2 Takahashi, Dean (April 9, 1998), Terayon Modem Enters Race For High-Speed Internet Access, The Wall Street Journal
- 1 2 "Site not found".
- ↑ Staff, TheMarker com (15 August 2002). "Terayon's quagmire". TheStreet.
- ↑ California Law Business. Daily Journal Corporation. July 1998.
- ↑ Holding, Reynolds (November 9, 2003). "Double whammy in stock fraud case / Short sellers trash, then sue, Santa Clara tech firm". SFGATE.
- ↑ CED. International Thomson Communications. 1998.
- ↑ America's Corporate Finance Directory 2002. National Register. September 2001. ISBN 9780872178984.
- ↑ "Selim Shlomo Rakib Inventions, Patents and Patent Applications - Justia Patents Search". patents.justia.com.
- ↑ "Shlomo Rakib | Technion Israel Institute of Technology - Academia.edu". technion.academia.edu.
- ↑ Official Gazette of the United States Patent and Trademark Office: Patents. U.S. Department of Commerce, Patent and Trademark Office. November 1999.
- ↑ "Shlomo Rakib resigns as Terayon president - Globes". en.globes.co.il. October 3, 2004.
- ↑ Reardon, Marguerite. "Motorola boosts TV tech with Terayon buy". CNET.
- 1 2 "Cisco, Arris could regret allowing Nokia to become force in US cable". Rethink.
- ↑ "Novafora to buy once high-flying Transmeta for $256 million". November 17, 2008.
- ↑ Baumgartner, LR Cable News Analysis Jeff; Editor, Senior; Reading 8/7/2009, Light. "Novafora Burns Out". Light Reading.
{{cite web}}:|last2=has generic name (help)CS1 maint: numeric names: authors list (link) - ↑ "e8vk". www.sec.gov.
- ↑ "Transmeta buyer Novafora goes under, says report". archive.ph. July 30, 2012. Archived from the original on 2012-07-30.
- ↑ "5TONIC Labs and Telefónica Successfully Test Cohere Technologies' 5G turboConnect™ Fixed Wireless Access". IMDEA Networks. March 26, 2018.
- ↑ Cohere raises $35M for expansion, new wireless communications technology
- 1 2 "StackPath". www.mwrf.com. 26 February 2016.
- 1 2 3 "C Spire to test Cohere OTFS technology". FierceWireless. 6 December 2017.
- ↑ "Cohere Technologies faces big competition as it vies for 5G air interface". FierceWireless. 6 March 2016.
- ↑ Reading 2/12/2020, News Wire Feed Light. "Cohere boasts spectrum and capacity multiplier for 4G, 5G". Light Reading.
{{cite web}}: CS1 maint: numeric names: authors list (link) - ↑ "The Mobile Network » A tale of Open RAN innovation from Cohere Technologies". 29 June 2020.
- ↑ June 2013, Jeff Baumgartner 07 (7 June 2013). "Cohere Becomes Gainspeed". Multichannel News.
{{cite web}}: CS1 maint: numeric names: authors list (link) - ↑ Baumgartner, Jeff (April 16, 2021). "CableLabs takes on role of convergence catalyst". LightReading.
- ↑ Hardy, Stephen (2021-04-22). "CableLabs launches mobile convergence initiative". Lightwave. Retrieved 2024-08-26.
- ↑ "Salim Shlomo Rakib". scholar.google.com.
- ↑ Broadband Access Technologies: ADSL/VDSL, Cable Modems, Fiber, LMDS. McGraw-Hill. 1999. ISBN 9780071350600.
- ↑ "Shlomo RAKIB | CEO" . Retrieved 2022-04-30.