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1. WO2020197782 - COOPERATIVE BROADCAST MULTI-HOP NETWORK THAT EMPLOYS BROADCAST FLOOD ROUTING AND MULTI-HOP TRANSMISSION USING A DIRECT-SEQUENCE SPREAD-SPECTRUM (DSSS) WAVEFORM WITH COOPERATIVE BEAMFORMING AND ADAPTIVE SPACE-SPECTRUM WHITENING, AND A NODE FOR USE IN A COOPERATIVE BROADCAST MULTI-HOP NETWORK HAVING A MULTI-USER RAKE RECEIVER AND/OR AN ADAPTIVE SPACE-SPECTRUM WHITENER

Publication Number WO/2020/197782
Publication Date 01.10.2020
International Application No. PCT/US2020/022344
International Filing Date 12.03.2020
IPC
H04B 1/7115 2018.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
707using direct sequence modulation
7097Interference-related aspects
711the interference being multi-path interference
7115Constructive combining of multi-path signals, i.e. RAKE receivers
H04B 1/713 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
713using frequency hopping
H04B 1/692 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
692Hybrid techniques using combinations of two or more spread spectrum techniques
H04B 7/04 2017.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
H04W 88/04 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
88Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
02Terminal devices
04adapted for relaying to or from another terminal or user
CPC
H04B 1/692
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
692Hybrid techniques using combinations of two or more spread spectrum techniques
H04B 1/7115
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
707using direct sequence modulation
7097Interference-related aspects
711the interference being multi-path interference
7115Constructive combining of multi-path signals, i.e. RAKE receivers
H04B 1/713
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
713using frequency hopping
H04B 1/715
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
713using frequency hopping
715Interference-related aspects
H04B 17/336
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
30of propagation channels
309Measuring or estimating channel quality parameters
336Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
H04B 2201/709718
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
2201Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
69Orthogonal indexing scheme relating to spread spectrum techniques in general
707relating to direct sequence modulation
7097Direct sequence modulation interference
709718Determine interference
Applicants
  • GENERAL DYNAMICS MISSION SYSTEMS, INC. [US]/[US]
Inventors
  • BLANCHARD, Scott David
  • LEE, David Kunil
Agents
  • MADILL, Erin P.
Priority Data
16/661,88323.10.2019US
16/661,90523.10.2019US
16/661,91723.10.2019US
62/823,42025.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) COOPERATIVE BROADCAST MULTI-HOP NETWORK THAT EMPLOYS BROADCAST FLOOD ROUTING AND MULTI-HOP TRANSMISSION USING A DIRECT-SEQUENCE SPREAD-SPECTRUM (DSSS) WAVEFORM WITH COOPERATIVE BEAMFORMING AND ADAPTIVE SPACE-SPECTRUM WHITENING, AND A NODE FOR USE IN A COOPERATIVE BROADCAST MULTI-HOP NETWORK HAVING A MULTI-USER RAKE RECEIVER AND/OR AN ADAPTIVE SPACE-SPECTRUM WHITENER
(FR) RÉSEAU À BONDS MULTIPLES DE DIFFUSION COOPÉRATIVE UTILISANT UN ROUTAGE D'INONDATION DE DIFFUSION ET UNE TRANSMISSION À BONDS MULTIPLES FAISANT APPEL À UNE FORME D'ONDE DE SPECTRE ÉTALÉ À SÉQUENCE DIRECTE (DSSS) AVEC FORMATION DE FAISCEAU COOPÉRATIVE ET BLANCHISSEMENT DE SPECTRE D'ESPACE ADAPTATIF, ET NŒUD DESTINÉ À ÊTRE UTILISÉ DANS UN RÉSEAU À BONDS MULTIPLES DE DIFFUSION COOPÉRATIVE AYANT UN RÉCEPTEUR RAKE MULTI-UTILISATEUR ET/OU UN AGENT DE BLANCHIMENT À SPECTRE D'ESPACE ADAPTATIF
Abstract
(EN)
A cooperative broadcast multi-hop network is provided that employs broadcast flood routing and multi-hop transmission using a direct-sequence spread-spectrum (DSSS) waveform with cooperative beamforming and adaptive space-spectrum whitening. Node(s) can receive DSSS signals from other nodes on a particular channel, and output a channel that includes the plurality of DSSS signals, which include transmissions that are directly received from other nodes. A multi-user RAKE (mRAKE) receiver can cooperatively beamform and perform adaptive space-spectrum whitening to detect and remove interference signals received from each of the channels by performing a covariance analysis to generate channelized signals. Modified Discrete Fourier Transform analysis and synthesis modules can generate an interference mitigated time-domain channelized signals, such that the mRAKE receiver, when performing demodulation processing, can combine the interference mitigated time-domain channelized signals received from the other nodes.
(FR)
L'invention concerne un réseau à bonds multiples de diffusion coopérative qui utilise un routage d'inondation de diffusion et une transmission à bonds multiples faisant appel à une forme d'onde de spectre étalé à séquence directe (DSSS) avec formation de faisceau coopérative et blanchiment de spectre d'espace adaptatif. Le nœud peut recevoir des signaux DSSS en provenance d'autres nœuds sur un canal particulier, et délivrer un canal qui comprend la pluralité de signaux DSSS, qui comprennent des transmissions qui sont directement reçues d'autres nœuds. Un récepteur RAKE multiutilisateur (mRAKE) peut former un faisceau de manière coopérative et effectuer un blanchiment de spectre d'espace adaptatif pour détecter et éliminer des signaux d'interférence reçus de chacun des canaux par réalisation d'une analyse de covariance pour générer des signaux canalisés. Des modules d'analyse et de synthèse de transformée de Fourier discrète modifiée peuvent générer un signal canalisé à domaine temporel atténué d'interférence, de telle sorte que le récepteur mRAKE, lors de la réalisation d'un traitement de démodulation, peut combiner les signaux canalisés dans le domaine temporel à interférence atténuée reçus des autres nœuds.
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