NO20055252D0 - Synkronisert kringkastingskommunikasjon - Google Patents
Synkronisert kringkastingskommunikasjonInfo
- Publication number
- NO20055252D0 NO20055252D0 NO20055252A NO20055252A NO20055252D0 NO 20055252 D0 NO20055252 D0 NO 20055252D0 NO 20055252 A NO20055252 A NO 20055252A NO 20055252 A NO20055252 A NO 20055252A NO 20055252 D0 NO20055252 D0 NO 20055252D0
- Authority
- NO
- Norway
- Prior art keywords
- broadcast
- synchronized
- transmitters
- same
- synchronized broadcast
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/023—Multiplexing of multicarrier modulation signals
- H04L5/026—Multiplexing of multicarrier modulation signals using code division
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/01—Equalisers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Radio Relay Systems (AREA)
- Small-Scale Networks (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
Synkronisert kringkasting innebærer at ett og samme kringkastingsinnhold sendes og ved bruk av en og samme bølgeform fra flere sendere. Senderne bruker også en og samme spredekode for kringkastingen. I et spektralfordelt kommunikasjonssystem med signalene i foroverlinken tidsdelt multipleksfordelt settes en synkronisert kringkastingssekvens inn i en kringkastingstidsluke, og særlig brukes en bølgeform for modulasjonstypen ortogonal frekvensdelt multipleks (OFDM) for den synkroniserte kringkasting. En OFDM-mottaker brukes for behandling av den mottatte synkroniserte kringkasting, og i en alternativ utførelse kan man bruke en kringkastet PN-kode for utsendingen fra senderne, idet forkortelsen står for pseudo-noise og betyr en tilnærmet tilfeldig signalfordeling tilsvarende støy. En utjevner ("equalizer") brukes for å gi et estimat for den synkroniserte kringkasting.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US53795504P | 2004-01-20 | 2004-01-20 | |
PCT/US2005/001591 WO2005071867A2 (en) | 2004-01-20 | 2005-01-20 | Synchronized broadcast/multicast communication |
Publications (2)
Publication Number | Publication Date |
---|---|
NO20055252D0 true NO20055252D0 (no) | 2005-11-08 |
NO20055252L NO20055252L (no) | 2006-08-10 |
Family
ID=34807148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20055252A NO20055252L (no) | 2004-01-20 | 2005-11-08 | Synkronisert kringkastingskommunikasjon |
Country Status (26)
Country | Link |
---|---|
US (4) | US8363697B2 (no) |
JP (4) | JP4777907B2 (no) |
KR (3) | KR101129205B1 (no) |
CN (4) | CN102291362B (no) |
AU (2) | AU2005207338B2 (no) |
BG (1) | BG109346A (no) |
BR (1) | BRPI0504407A (no) |
CA (1) | CA2525239C (no) |
CZ (1) | CZ2005704A3 (no) |
DE (1) | DE602005022263D1 (no) |
DK (1) | DK1658688T3 (no) |
EC (1) | ECSP056176A (no) |
ES (2) | ES2541104T3 (no) |
HU (1) | HUE026306T2 (no) |
IL (2) | IL171796A (no) |
MX (1) | MXPA05012687A (no) |
NO (1) | NO20055252L (no) |
NZ (3) | NZ577650A (no) |
PL (1) | PL380449A1 (no) |
PT (2) | PT1788725E (no) |
RU (1) | RU2379840C2 (no) |
TR (1) | TR200504827T2 (no) |
TW (2) | TWI513204B (no) |
UA (1) | UA95437C2 (no) |
WO (1) | WO2005071867A2 (no) |
ZA (1) | ZA200509101B (no) |
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