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1. WO2019055861 - ACHIEVING SYNCHRONIZATION IN AN ORTHOGONAL TIME FREQUENCY SPACE SIGNAL RECEIVER

Publication Number WO/2019/055861
Publication Date 21.03.2019
International Application No. PCT/US2018/051199
International Filing Date 14.09.2018
IPC
H04L 23/02 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
23Apparatus or local circuits for telegraphic systems other than those covered by groups H04L15/-H04L21/139
02adapted for orthogonal signalling
H04W 72/04 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. selection or allocation of wireless resources or wireless traffic scheduling
04Wireless resource allocation
H04J 11/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
11Orthogonal multiplex systems
H04L 27/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
CPC
H04L 23/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
23Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
02adapted for orthogonal signalling
H04L 27/1566
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
10Frequency-modulated carrier systems, i.e. using frequency-shift keying
14Demodulator circuits
156with demodulation using temporal properties of the received signal, e.g. detecting pulse width
1566using synchronous sampling
H04L 27/2607
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2602Signal structure
2605Symbol extensions
2607Cyclic extensions
H04L 27/2623
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2614Peak power aspects
2623Reduction thereof by clipping
H04L 27/2639
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2626Arrangements specific to the transmitter
2627Modulators
2639Discrete cosine transform modulators
H04L 27/2663
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27Modulated-carrier systems
26Systems using multi-frequency codes
2601Multicarrier modulation systems
2647Arrangements specific to the receiver
2655Synchronisation arrangements
2662Symbol synchronisation
2663Coarse synchronisation, e.g. by correlation
Applicants
  • COHERE TECHNOLOGIES, INC. [US]/[US]
Inventors
  • NAMBOODIRI, Devan
  • SANDERS, Karl
  • ROZENBAUM, Yaron
  • DELFELD, James
Agents
  • SATHE, Vinay
  • SUMEDHA, Ahuja
  • ARAIZA, Alberto, G.
  • ARNETT, Stephen, E.
  • ASPHAHANI, Fareid
Priority Data
62/559,39815.09.2017US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ACHIEVING SYNCHRONIZATION IN AN ORTHOGONAL TIME FREQUENCY SPACE SIGNAL RECEIVER
(FR) RÉALISATION D'UNE SYNCHRONISATION DANS UN RÉCEPTEUR DE SIGNAL D'ESPACE TEMPS-FRÉQUENCE ORTHOGONAL
Abstract
(EN)
Methods, systems and device for achieving synchronization in an orthogonal time frequency space (OTFS) signal receiver are described. An exemplary signal reception technique includes receiving an OTFS modulated wireless signal comprising pilot signal transmissions interspersed with data transmissions, calculating autocorrelation of the wireless signal using the wireless signal and a delayed version of the wireless signal that is delayed by a pre-determined delay, thereby generating an autocorrelation output, processing the autocorrelation filter through a moving average filter to produce a fine timing signal. Another exemplary signal reception technique includes receiving an OTFS modulated wireless signal comprising pilot signal transmissions interspersed with data transmissions, performing an initial automatic gain correction of the received OTFS wireless signal by peak detection and using clipping information, performing coarse automatic gain correction on results of a received and initial automatic gain control (AGC)-corrected signal.
(FR)
L'invention concerne des procédés, des systèmes et un dispositif permettant de réaliser une synchronisation dans un récepteur de signal d'espace temps-fréquence orthogonal (OTFS). Une technique de réception de signal donnée à titre d'exemple consiste à : recevoir un signal sans fil modulé par OTFS comprenant des transmissions de signal pilote entrecoupées de transmissions de données; calculer une autocorrélation du signal sans fil à l'aide du signal sans fil et d'une version retardée du signal sans fil qui est retardée d'un retard prédéterminé, ce qui permet de générer une sortie d'autocorrélation; traiter le filtre d'autocorrélation à l'aide d'un filtre moyen mobile afin de produire un signal de synchronisation fine. Une autre technique de réception de signal, donnée à titre d'exemple, consiste à : recevoir un signal sans fil modulé par OTFS comprenant des transmissions de signal pilote entrecoupées de transmissions de données; effectuer une correction de gain automatique initiale du signal sans fil OTFS reçu au moyen d'une détection de crête; et, à l'aide des informations d'écrêtage, effectuer une correction de gain automatique approximative sur les résultats d'un signal corrigé par commande automatique de gain (AGC) initial et reçu.
Also published as
Latest bibliographic data on file with the International Bureau