1
Shlomo Selim Rakib, Ronny Hadani: Signal modulation method resistant to echo reflections and frequency offsets. Cohere Technologies, Stephen E Zweig, July 14, 2015: US09083595 (31 worldwide citation)

A method of modulating communications signals, such as optical fiber, wired electronic, or wireless signals in a manner that facilitates automatic correction for the signal distortion effects of echoes and frequency shifts, while still allowing high rates of data transmission. Data symbols intended ...


2
Shlomo Selim Rakib, Ronny Hadani: Orthonormal time-frequency shifting and spectral shaping communications method. Cohere Technologies, Stephen E Zweig, July 14, 2015: US09083483 (18 worldwide citation)

A wireless combination time, frequency and spectral shaping communications method that transmits data in convolution unit matrices (data frames) of N×N (N2), where generally either all N2 data symbols are received over N spreading time intervals (each composed of N time slices), or none are. To tran ...


3
Ronny Hadani, Salim Shlomo Rakib: Modulation and equalization in an orthonormal time-frequency shifting communications system. Cohere Technologies, Cooley, May 12, 2015: US09031141 (15 worldwide citation)

A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an int ...


4
Ronny Hadani, Shlomo Selim Rakib: OTFS methods of data channel characterization and uses thereof. Cohere Technologies, Stephen E Zweig, September 13, 2016: US09444514 (15 worldwide citation)

Fiber, cable, and wireless data channels are typically impaired by reflectors and other imperfections, producing a channel state with echoes and frequency shifts in data waveforms. Here, methods of using OTFS pilot symbol waveform bursts to automatically produce a detailed 2D model of the channel st ...


5
Ronny Hadani, Salim Shlomo Rakib: Modulation and equalization in an orthonormal time-frequency shifting communications system. Cohere Technologies, Cooley, March 10, 2015: US08976851 (15 worldwide citation)

A method which includes receiving a first modulated signal from a first user device, the first modulated signal being generated based upon a time-frequency transformation of first user data. The method further includes receiving a second modulated signal from a second user device, the second modulat ...


6
Ronny Hadani, Salim Shlomo Rakib: Modulation and equalization in an orthonormal time-frequency shifting communications system. Cohere Technologies, Cooley, June 30, 2015: US09071285 (14 worldwide citation)

A system and method of providing a modulated signal useable in a signal transmission system. The method includes transforming, perhaps with respect to both time and frequency, a data frame including a plurality of data elements into a transformed data matrix. The transformed data matrix includes a p ...


7
Ronny Hadani, Selim Shlomo Rakib: Modulation and equalization in an orthonormal time-frequency shifting communications system. Cohere Technologies, Cooley, March 22, 2016: US09294315 (13 worldwide citation)

A method of data transmission including arranging a set of data elements into an original data frame having a first dimension of N elements and a second dimension of N elements, where N is greater than one. The method includes transforming the original data frame in accordance with a transformation ...


8
Ronny Hadani, Salim Shlomo Rakib: Modulation and equalization in an orthonormal time-frequency shifting communications system. Cohere Technologies, Cooley, June 30, 2015: US09071286 (13 worldwide citation)

A method for modulating data for transmission within a communication system. The method includes establishing a time-frequency shifting matrix of dimension N×N, wherein N is greater than one. The method further includes combining the time-frequency shifting matrix with a data frame to provide an int ...


9
Ronny Hadani, Salim Shlomo Rakib: Modulation and equalization in an orthonormal time-frequency shifting communications system. Cohere Technologies, Cooley, September 8, 2015: US09130638 (12 worldwide citation)

A method of receiving data including receiving, on one or more carrier waveforms, signals representing a plurality of data elements of an original data frame wherein each of the data elements are represented by cyclically time shifted and cyclically frequency shifted versions of a known set of wavef ...


10
Shlomo Selim Rakib, Ronny Hadani: Methods of operating and implementing wireless OTFS communciations systems. Cohere Technologies, Stephen E Zweig, April 25, 2017: US09634719 (10 worldwide citation)

Computerized wireless transmitter/receiver system that automatically uses combinations of various methods, including transmitting data symbols by weighing or modulating a family of time shifted and frequency shifted waveforms bursts, pilot symbol methods, error detection methods, MIMO methods, and o ...