scispace - formally typeset
Patent

Systems and methods for symplectic orthogonal time frequency shifting modulation and transmission of data

Hadani Ronny, +1 more
TLDR
In this article, the authors present an alternative modulation scheme that maps data symbols intended for data transmission onto a symplectic-like 2D Fourier transform which operates on a form of the original data symbols.
Abstract: 
An alternative method of data communications using orthogonal time frequency shifting (OTFS) wireless waveforms configured so as to transmit data in a manner that is relatively insensitive to communications channel distortions and frequency shifts. In contrast to prior methods taught by applicant, the present disclosure teaches an alternative modulation scheme that maps data symbols intended for data transmission onto a symplectic-like 2D Fourier transform which operates on a form of the original data symbols. This 2D Fourier transform in turn is passed through a filter bank of narrow band filters, and the output in turn used to modulate transmitted waveforms according to various time slices until the entire 2D Fourier transform has been transmitted. At the receiver, and inverse of this process can be used to both characterize the data channel and correct the received signals for channel distortions, thus receiving a clear form of the original data symbols.

read more

Citations
More filters
Patent

Otfs methods of data channel characterization and uses thereof

Ronny Hadani, +1 more
TL;DR: In this paper, the authors used OTFS pilot symbol waveform bursts to automatically produce a detailed 2D model of the channel state, which can then be used to optimize data transmission.
Patent

Orthogonal time frequency space communication system compatible with ofdm

Shlomo Selim Rakib, +1 more
TL;DR: In this article, a system and method for orthogonal time frequency space communication and waveform generation was proposed, which includes receiving a plurality of information symbols and encoding an N×M array containing the plurality of symbols into a two-dimensional array of modulation symbols by spreading each of the information symbols with respect to both time and frequency.
Patent

Multiple access in an orthogonal time frequency space communication system

Ronny Hadani, +1 more
TL;DR: In this article, a method and system for multiple access in a system utilizing two-dimensional signal modulation is presented, which includes spreading data symbols arranged in a twodimensional information domain onto sets of grid points respectively associated with different users in a time-frequency domain.
Patent

Orthogonal time frequency space modulation system for the internet of things

Selim Shlomo Rakib, +1 more
TL;DR: In this article, the authors propose a system and method of operating an Internet of Things (IOT) device and an IOT manager device, which includes determining, during operation of the IOT device in a low power mode, an orthonormal time-frequency shifting (OTFS) transmission waveform using two-dimensional channel state information relevant to a delay-Doppler channel domain.
Patent

Inconspicuous multi-directional antenna system configured for multiple polarization modes

Rakib Shlomo Selim, +1 more
TL;DR: Inconspicuous antenna systems are configured to include substantially transparent conducting and dielectric materials or open lattice structures as discussed by the authors, which can be used in urban environments and installed as visually inconspicuous retrofits over building windows, street lights, air conditioning units, and the like.
References
More filters
Journal ArticleDOI

Scaling Up MIMO: Opportunities and Challenges with Very Large Arrays

Fredrik Rusek, +5 more
- 01 Jan 2013 - 
TL;DR: The gains in multiuser systems are even more impressive, because such systems offer the possibility to transmit simultaneously to several users and the flexibility to select what users to schedule for reception at any given point in time.
Patent

Scattered pilot pattern and channel estimation method for MIMO-OFDM systems

Jianglei Ma, +3 more
TL;DR: In this paper, a method and apparatus for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system, is provided.
Patent

Method and apparatus for transmitting and receiving signals having a carrier interferometry architecture

Steve J. Shattil
TL;DR: In this article, the carrier interferometry is used to create a signal architecture for wireless and waveguide electromagnetic-wave communications, which provides unprecedented bandwidth efficiency and enables substantial improvements in interference rejection, power efficiency, and system versatility.
Patent

Apparatus and method for digital data transmission using orthogonal codes

Selim Shlomo Rakib, +1 more
TL;DR: In this paper, a synchronous co-division multiple access (SCDMA) protocol is proposed to transmit multiple channels of digital data over a shared transmission media such as a cable television system coaxial cable, a fiber optic or copper conductor telephone link, terrestial microwave, satellite link, local or wide area network, wireless including cellur network or some combination of these media using suitable interface circuitry.
Patent

Diversity transmission modes for mimo ofdm communication systems

Jay Rodney Walton, +1 more
TL;DR: In this paper, a particular diversity transmission mode is selected for use from among a number of possible transmission modes, such as frequency diversity, Walsh diversity, space time transmit diversity, and a Walsh-STTD.