CA2542257A1 - Method and apparatus for transmission and reception within an ofdm communication system - Google Patents
Method and apparatus for transmission and reception within an ofdm communication system Download PDFInfo
- Publication number
- CA2542257A1 CA2542257A1 CA002542257A CA2542257A CA2542257A1 CA 2542257 A1 CA2542257 A1 CA 2542257A1 CA 002542257 A CA002542257 A CA 002542257A CA 2542257 A CA2542257 A CA 2542257A CA 2542257 A1 CA2542257 A1 CA 2542257A1
- Authority
- CA
- Canada
- Prior art keywords
- communication system
- reception
- transmission
- pilot signal
- ofdm communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0016—Time-frequency-code
- H04L5/0021—Time-frequency-code in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/068—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission using space frequency diversity
-
- 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
- H04L25/0204—Channel estimation of multiple channels
-
- 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
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
-
- 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
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
- H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
- H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals
-
- 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
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
-
- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0026—Division using four or more dimensions
-
- 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
-
- 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
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
- H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A communication system (fig. 4) comprising a first multicarrier transmitter (401/506) outputting a first spread pilot signal (504) over a first spreading block interval on a first plurality of subcarrier (fig. 5). A second multicarrier transmitter (401/506) outputting a second spread pilot signal (504) on the first plurality of subcarriers within the spreading block interval, wherein for each of the plurality of subcarriers, the second spread pilot signal differs form the first pilot signal by a predetermined amount.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US51206903P | 2003-10-17 | 2003-10-17 | |
US60/512,069 | 2003-10-17 | ||
US10/945,692 US7242722B2 (en) | 2003-10-17 | 2004-09-21 | Method and apparatus for transmission and reception within an OFDM communication system |
US10/945,692 | 2004-09-21 | ||
PCT/US2004/033321 WO2005041452A1 (en) | 2003-10-17 | 2004-10-08 | Method and apparatus for transmission and reception within an ofdm communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2542257A1 true CA2542257A1 (en) | 2005-06-05 |
CA2542257C CA2542257C (en) | 2009-08-11 |
Family
ID=34526670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002542257A Active CA2542257C (en) | 2003-10-17 | 2004-10-08 | Method and apparatus for transmission and reception within an ofdm communication system |
Country Status (8)
Country | Link |
---|---|
US (2) | US7242722B2 (en) |
EP (1) | EP1678849A4 (en) |
JP (1) | JP2007508786A (en) |
KR (1) | KR100841543B1 (en) |
CN (1) | CN1868152B (en) |
CA (1) | CA2542257C (en) |
IL (1) | IL174540A (en) |
WO (1) | WO2005041452A1 (en) |
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-
2004
- 2004-09-21 US US10/945,692 patent/US7242722B2/en active Active
- 2004-10-08 WO PCT/US2004/033321 patent/WO2005041452A1/en active Application Filing
- 2004-10-08 CN CN2004800306011A patent/CN1868152B/en active Active
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KR20060076314A (en) | 2006-07-04 |
EP1678849A1 (en) | 2006-07-12 |
CA2542257C (en) | 2009-08-11 |
US20050084000A1 (en) | 2005-04-21 |
KR100841543B1 (en) | 2008-06-26 |
CN1868152A (en) | 2006-11-22 |
US7535967B2 (en) | 2009-05-19 |
US7242722B2 (en) | 2007-07-10 |
WO2005041452A1 (en) | 2005-05-06 |
US20070201572A1 (en) | 2007-08-30 |
JP2007508786A (en) | 2007-04-05 |
EP1678849A4 (en) | 2009-12-02 |
IL174540A0 (en) | 2006-08-01 |
IL174540A (en) | 2013-11-28 |
CN1868152B (en) | 2011-09-28 |
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