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TWI268674B - OFDM system having cyclic prefix length detection - Google Patents

OFDM system having cyclic prefix length detection

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Publication number
TWI268674B
TWI268674B TW094127777A TW94127777A TWI268674B TW I268674 B TWI268674 B TW I268674B TW 094127777 A TW094127777 A TW 094127777A TW 94127777 A TW94127777 A TW 94127777A TW I268674 B TWI268674 B TW I268674B
Authority
TW
Taiwan
Prior art keywords
length
ofdm
ofdm system
length detection
cyclic prefix
Prior art date
Application number
TW094127777A
Other languages
Chinese (zh)
Other versions
TW200707953A (en
Inventor
Chih-Peng Li
Wei-Chieh Huang
Wei-Wen Hu
Original Assignee
National Sun Yat-Sen Univ
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by National Sun Yat-Sen Univ filed Critical National Sun Yat-Sen Univ
Priority to TW094127777A priority Critical patent/TWI268674B/en
Application granted granted Critical
Publication of TWI268674B publication Critical patent/TWI268674B/en
Publication of TW200707953A publication Critical patent/TW200707953A/en

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  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

This invention relates to an orthogonal division frequency modulation (OFDM) system having cyclic-prefix (CP) length detection. According to the invention, a delay-correlator with fixed length is used to takes the autocorrelation on one OFDM symbol with unknown CP length, and the CP length and obtains synchronization of OFDM symbol are decided by means of the correlativity. Therefore, using the CP length detector with low complexity, the OFDM system of the invention can fast and accurately detect the CP length, and efficiently utilizes bandwidth on the presupposition without inter-symbol interference.
TW094127777A 2005-08-15 2005-08-15 OFDM system having cyclic prefix length detection TWI268674B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW094127777A TWI268674B (en) 2005-08-15 2005-08-15 OFDM system having cyclic prefix length detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW094127777A TWI268674B (en) 2005-08-15 2005-08-15 OFDM system having cyclic prefix length detection

Publications (2)

Publication Number Publication Date
TWI268674B true TWI268674B (en) 2006-12-11
TW200707953A TW200707953A (en) 2007-02-16

Family

ID=57910855

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094127777A TWI268674B (en) 2005-08-15 2005-08-15 OFDM system having cyclic prefix length detection

Country Status (1)

Country Link
TW (1) TWI268674B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8718030B2 (en) 2007-03-26 2014-05-06 Qualcomm Incorporated Methods and apparatus for performing channel tree operations
US9723529B2 (en) 2007-01-26 2017-08-01 Wi-Lan Inc. Multiple network access system and method
US10516713B2 (en) 2007-01-12 2019-12-24 Wi-Lan Inc. Convergence sublayer for use in a wireless broadcasting system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10516713B2 (en) 2007-01-12 2019-12-24 Wi-Lan Inc. Convergence sublayer for use in a wireless broadcasting system
US11057449B2 (en) 2007-01-12 2021-07-06 Wi-Lan Inc. Convergence sublayer for use in a wireless broadcasting system
US11621990B2 (en) 2007-01-12 2023-04-04 Wi-Lan Inc. Convergence sublayer for use in a wireless broadcasting system
US9723529B2 (en) 2007-01-26 2017-08-01 Wi-Lan Inc. Multiple network access system and method
US10231161B2 (en) 2007-01-26 2019-03-12 Wi-Lan Inc. Multiple network access system and method
US11134426B2 (en) 2007-01-26 2021-09-28 Wi-Lan Inc. Multiple network access system and method
US8718030B2 (en) 2007-03-26 2014-05-06 Qualcomm Incorporated Methods and apparatus for performing channel tree operations

Also Published As

Publication number Publication date
TW200707953A (en) 2007-02-16

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