公开(公告)号：US20210194732A1

公开(公告)日：2021-06-24

申请号：US17188845

申请日：2021-03-01

Applicant: Cohere Technologies, Inc.

Inventor： Shachar KONS ,  Ronny HADANI ,  Michail TSATSANIS

IPC: H04L25/02 ,  H04L5/00 ,  H04L27/01 ,  H04L27/34

Abstract: In a transmitter apparatus, a known reference signal is superimposed on top of a data signal that is typically not known a priori to a receiver and the combined signal is transmitted. At a receiver, an iterative channel estimation and equalization technique is used to recover the reference signal and the unknown data signal. In the initial iteration, the known reference signal is recovered by treating the data signal as noise. Subsequent iterations are used to improve estimation of received reference signal and the unknown data signal.

公开(公告)号：US20240364447A1

公开(公告)日：2024-10-31

申请号：US18757085

申请日：2024-06-27

Applicant: Cohere Technologies, Inc.

Inventor： Ronny HADANI ,  Anton MONK ,  Shlomo Selim RAKIB ,  Michail TSATSANIS

IPC: H04L1/00 ,  H04B7/06 ,  H04L5/00 ,  H04L25/03 ,  H04L27/26

CPC classification number: H04L1/0023 ,  H04L5/0007 ,  H04L5/0023 ,  H04L27/2639 ,  H04L27/2697 ,  H04B7/06 ,  H04L1/0071 ,  H04L25/03834

Abstract: An Orthogonal Time Frequency Space Modulation (OTFS) modulation scheme achieving multiple access by multiplexing multiple signals at the transmitter-side performs allocation of transmission resources to a first signal and a second signal, combining and converting to a transmission format via OTFS modulation and transmitting the signal over a communication channel. At the receiver, multiplexed signals are recovered using orthogonality property of the basis functions used for the multiplexing at the transmitter.

公开(公告)号：US20200322185A1

公开(公告)日：2020-10-08

申请号：US16303590

申请日：2017-05-19

Applicant: Cohere Technologies, Inc.

Inventor： Shachar KONS ,  Ronny HADANI ,  Michail TSATSANIS

IPC: H04L25/02 ,  H04L5/00 ,  H04L27/34 ,  H04L27/01

Abstract: In a transmitter apparatus, a known reference signal is superimposed on top of a data signal that is typically not known a priori to a receiver and the combined signal is transmitted. At a receiver, an iterative channel estimation and equalization technique is used to recover the reference signal and the unknown data signal. In the initial iteration, the known reference signal is recovered by treating the data signal as noise. Subsequent iterations are used to improve estimation of received reference signal and the unknown data signal.