Ronny Hadani

Last updated
Ronny Hadani
RonnyHadani.jpg
Nationality Israeli-American
Occupations
  • Mathematician
  • Professor
  • Author

Ronny Hadani is an Israeli-American mathematician, specializing in representation theory and harmonic analysis, with applications to signal processing. [1] [2] He is known for developing Orthogonal Time Frequency and Space (OTFS) modulating techniques, a method used for making wireless 5G communications faster, [3] that is also being considered for use in 6G technology. [4] The technology is being used by several wireless 5G related companies and Cohere Technologies, a company he has co-founded. [5] [6] [7] [8] [9]

Contents

Early life and education

Hadani received his MS degree in Computer Science from the Weizmann Institute of Science in 1999 under the supervision of David Harel. He received his Ph.D. degree in Pure Mathematics from Tel-Aviv University in 2006 under the supervision of Joseph Bernstein. [1] [2]

Career

Academia

From the years 2006 to 2009, Hadani held an L.E. Dickson Postdoctoral Fellowship of Mathematics at the University of Chicago. Since 2009, he has been an associate professor of mathematics at the University of Texas, Austin. [2] [10] [11]

Cohere Technologies

In 2010, Hadani co-founded Cohere Technologies with Shlomo Rakib. The company is a Silicon Valley wireless startup that focuses on wireless improvements using OTFS and the Delay-Doppler model to improve FDD/TDD spectrum performance with channel detection, estimation, prediction, and precoding software for 4G and 5G networks, compliant with 3GPP standards and O-RAN. [5] [10] [12]

In December 2022, during the inaugural 6G Evolution Summit event opening keynote, Fierce Wireless moderator referred to Hadani as “The Father of OTFS.” [13]

Patents

Hadani has been granted over 70 OTFS related patents, which include a communications method employing Orthogonal Time Frequency Space (OTFS) shifting and spectral shaping, which allows users to transmit and receive at least one frame of data ([D]) over a wireless communications link. He has also patented methods of operating and implementing wireless OTFS communications systems. [7] [14] [15] His OTFS technology has been tested by companies such as C Spire, 5TONIC, [15] [16] Telefónica, [17] and Deutsche Telekom, [18] [19]

Selected publications

Papers in journals

Academic works

According to Google Scholar, Hadani has published over 75 research papers and patents. His works have been cited over 3300 times. [20]

Patents

Academic papers

Related Research Articles

<span class="mw-page-title-main">Code-division multiple access</span> Channel access method used by various radio communication technologies

Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies. To permit this without undue interference between the users, CDMA employs spread spectrum technology and a special coding scheme.

IEEE 802.15 is a working group of the Institute of Electrical and Electronics Engineers (IEEE) IEEE 802 standards committee which specifies Wireless Specialty Networks (WSN) standards. The working group was formerly known as Working Group for Wireless Personal Area Networks.

<span class="mw-page-title-main">Orthogonal frequency-division multiplexing</span> Method of encoding digital data on multiple carrier frequencies

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.

<span class="mw-page-title-main">Direct-sequence spread spectrum</span> Modulation technique to reduce signal interference

In telecommunications, direct-sequence spread spectrum (DSSS) is a spread-spectrum modulation technique primarily used to reduce overall signal interference. The direct-sequence modulation makes the transmitted signal wider in bandwidth than the information bandwidth. After the despreading or removal of the direct-sequence modulation in the receiver, the information bandwidth is restored, while the unintentional and intentional interference is substantially reduced.

<span class="mw-page-title-main">Frequency-shift keying</span> Data communications modulation protocol

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 (BFSK), in which the carrier is shifted between two discrete frequencies to transmit binary information.

In telecommunications and computer networks, a channel access method or multiple access method allows more than two terminals connected to the same transmission medium to transmit over it and to share its capacity. Examples of shared physical media are wireless networks, bus networks, ring networks and point-to-point links operating in half-duplex mode.

Ultra-wideband is a radio technology that can use a very low energy level for short-range, high-bandwidth communications over a large portion of the radio spectrum. UWB has traditional applications in non-cooperative radar imaging. Most recent applications target sensor data collection, precise locating, and tracking. UWB support started to appear in high-end smartphones in 2019.

<span class="mw-page-title-main">Orthogonal frequency-division multiple access</span> Multi-user version of OFDM digital modulation

Orthogonal frequency-division multiple access (OFDMA) is a multi-user version of the popular orthogonal frequency-division multiplexing (OFDM) digital modulation scheme. Multiple access is achieved in OFDMA by assigning subsets of subcarriers to individual users. This allows simultaneous low-data-rate transmission from several users.

IEEE 802.11a-1999 or 802.11a was an amendment to the IEEE 802.11 wireless local network specifications that defined requirements for an orthogonal frequency-division multiplexing (OFDM) communication system. It was originally designed to support wireless communication in the unlicensed national information infrastructure (U-NII) bands as regulated in the United States by the Code of Federal Regulations, Title 47, Section 15.407.

IEEE 802.11g-2003 or 802.11g is an amendment to the IEEE 802.11 specification that operates in the 2.4 GHz microwave band. The standard has extended link rate to up to 54 Mbit/s using the same 20 MHz bandwidth as 802.11b uses to achieve 11 Mbit/s. This specification under the marketing name of Wi-Fi has been implemented all over the world. The 802.11g protocol is now Clause 19 of the published IEEE 802.11-2007 standard, and Clause 19 of the published IEEE 802.11-2012 standard.

<span class="mw-page-title-main">MIMO</span> Use of multiple antennas in radio

In radio, multiple-input and multiple-output, or MIMO, is a method for multiplying the capacity of a radio link using multiple transmission and receiving antennas to exploit multipath propagation. MIMO has become an essential element of wireless communication standards including IEEE 802.11n, IEEE 802.11ac, HSPA+ (3G), WiMAX, and Long Term Evolution (LTE). More recently, MIMO has been applied to power-line communication for three-wire installations as part of the ITU G.hn standard and of the HomePlug AV2 specification.

<span class="mw-page-title-main">Underwater acoustic communication</span> Wireless technique of sending and receiving messages through water

Underwater acoustic communication is a technique of sending and receiving messages below water. There are several ways of employing such communication but the most common is by using hydrophones. Underwater communication is difficult due to factors such as multi-path propagation, time variations of the channel, small available bandwidth and strong signal attenuation, especially over long ranges. Compared to terrestrial communication, underwater communication has low data rates because it uses acoustic waves instead of electromagnetic waves.

<span class="mw-page-title-main">Hatim Zaghloul</span> Canadian-Egyptian inventor (born 1957)

Hatim Zaghloul Ph.D., M.Sc., B.E.E. is best known for his inventions, together with his long-time friend, Dr. Michel Fattouche of Wideband Orthogonal Frequency Division Multiplexing (WOFDM), and Multi-code Direct-sequence Spread Spectrum (MCDSSS). WOFDM is the foundation for the IEEE 802.11a/g/n technologies whereas MCDSSS helped increase the data rates of code division multiple access (CDMA) technologies as in the CDMA2000 standard. Currently, Dr. Zaghloul is the CEO and Chairman of Innovatian Inc., Giza, Egypt, a company specializing in building wireless data networks in unconnected countries through WiFi and blockchain. Dr. Zaghloul is also the co-founder and Chairman of Hikmah Capital Ltd. a company specializing in the development, marketing and management of financial technology solutions., Calgary, Alberta, Canada. He co-founded with Michel Fattouche, to commercialize their patented WOFDM technology. He founded and co-founded a number of hi-tech companies such as Cell-Loc Location Technologies Inc., a company he co-founded with Michel Fattouche to commercialize a cellular telephone location determination/tracking technology.

The first smart antennas were developed for military communications and intelligence gathering. The growth of cellular telephone in the 1980s attracted interest in commercial applications. The upgrade to digital radio technology in the mobile phone, indoor wireless network, and satellite broadcasting industries created new opportunities for smart antennas in the 1990s, culminating in the development of the MIMO technology used in 4G wireless networks.

<span class="mw-page-title-main">Gregory Raleigh</span>

Gregory “Greg” Raleigh, is an American radio scientist, inventor, and entrepreneur who has made contributions in the fields of wireless communication, information theory, mobile operating systems, medical devices, and network virtualization. His discoveries and inventions include the first wireless communication channel model to accurately predict the performance of advanced antenna systems, the MIMO-OFDM technology used in contemporary Wi-Fi and 4G wireless networks and devices, higher accuracy radiation beam therapy for cancer treatment, improved 3D surgery imaging, and a cloud-based Network Functions Virtualization platform for mobile network operators that enables users to customize and modify their smartphone services.

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.

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.

Shlomo Rakib 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 several patents and co-founder and current Chief Technology Officer of Cohere Technologies, which he had co-founded with Ronny Hadani. He also co-founded Terayon in 1993.

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.

References

  1. 1 2 "Alumni". The Weizmann Institute of Science Faculty of Mathematics and Computer Science. Retrieved July 29, 2020.
  2. 1 2 3 "The 88th IEEE Vehicular Technology Conference" (PDF). IEEE. 2018. Retrieved September 24, 2020.
  3. ↑ "Seminars: Fall 2017". NYU Tandon School of Engineering. 2017. Retrieved September 24, 2020.
  4. ↑ Lawrence, Alex (December 9, 2020). "The OTFS Interview – Implications of a 6G Candidate Technology". 6G World. Retrieved September 24, 2020.
  5. 1 2 "Cohere Technologies". 5G World. Retrieved September 24, 2020.
  6. ↑ "Seminar Series: Ronny Hadani". Qualcomm Institute. Retrieved September 24, 2020.
  7. 1 2 "Patents by Inventor Ronny Hadani". patents.justia.com. Justia Patents. Retrieved September 24, 2020.
  8. ↑ Hadani, Ronny; Singer, Amit (1 September 2011). "Representation theoretic patterns in three dimensional Cryo-Electron Microscopy I: The intrinsic reconstitution algorithm". Annals of Mathematics. 174 (2): 1219–1241. doi:10.4007/annals.2011.174.2.11. PMC   3505076 . PMID   23180881.
  9. ↑ "Shamgar Gurevich". Google Scholar. Retrieved September 25, 2020.
  10. 1 2 "W08: Wireless Communications in High Mobility". IEEE. 5 November 2018. Retrieved September 24, 2020.
  11. ↑ "Directory: Ronny Hadani". University of Texas at Austin. Retrieved September 24, 2020.
  12. ↑ "Ronny Hadani Comes in Loud and Clear". The University of Texas at Austin College of Natural Sciences. Retrieved September 24, 2020.
  13. ↑ "6G Evolution Summit event opening keynote". onlinexperiences.com. 2022-12-12. Retrieved 2023-02-10.
  14. ↑ "Ronny Hadani". patents.google.com. Google Patents. Retrieved September 24, 2020.
  15. 1 2 Monica Alleven (6 December 2017). "C Spire to test Cohere OTFS technology". FierceWireless.com. Fierce Wireless. Retrieved 24 September 2020.
  16. ↑ "5TONIC Successfully Tests Cohere Technologies OTFS". 5TONIC.org. 5TONIC. 2016. Retrieved 24 September 2020.
  17. ↑ "Telefónica wraps up trial of Cohere-based FWA solution". FierceWireless.com. Fierce Wireless. March 26, 2018. Retrieved 24 September 2020.
  18. ↑ "Cohere's coding for 5G interests AT&T, China Mobile, Deutsche Telekom, Telefonica and Telstra". WirelessOne.news. Wireless One. 30 April 2016. Retrieved September 24, 2020.
  19. ↑ Iain Morris (February 26, 2020). "Deutsche Telekom, Intel breakthrough piles open RAN pressure onto big vendors". LightReading.com. Light Reading. Retrieved 24 September 2020.
  20. ↑ "Ronny Hadani Works on Google Scholar" . Retrieved 2021-02-26.{{cite web}}: CS1 maint: url-status (link)
  21. ↑ Hadani, Ronny (2017-05-30). "OTFS methods of data channel characterization and uses thereof".{{cite web}}: CS1 maint: url-status (link)
  22. ↑ Hadani, Ronny (2015-05-28). "Signal modulation method resistant to echo reflections and frequency offsets" . Retrieved 2021-02-26.{{cite web}}: CS1 maint: url-status (link)
  23. ↑ Hadani, Ronny (2011-05-26). "Modulation and equalization in an orthonormal time-frequency shifting communications system".{{cite web}}: CS1 maint: url-status (link)
  24. ↑ Hadani, Ronny (2010-05-28). "Communications method employing orthonormal time-frequency shifting and spectral shaping".{{cite web}}: CS1 maint: url-status (link)
  25. ↑ Hadani, R.; Rakib, S.; Tsatsanis, M.; Monk, A.; Goldsmith, A. J.; Molisch, A. F.; Calderbank, R. (2017-03-19). "Orthogonal Time Frequency Space Modulation". 2017 IEEE Wireless Communications and Networking Conference (WCNC): 1–6. arXiv: 1808.00519 . doi:10.1109/WCNC.2017.7925924. ISBN   978-1-5090-4183-1. S2CID   11938646.
  26. ↑ Singer, A.; Zhao, Z.; Shkolnisky, Y.; Hadani, R. (2011-01-01). "Viewing Angle Classification of Cryo-Electron Microscopy Images Using Eigenvectors". SIAM Journal on Imaging Sciences. 4 (2): 723–759. doi:10.1137/090778390. PMC   3325115 . PMID   22506089.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.