Title:
【発明の名称】直交周波数分割多重/符号分割多重接続システムの周波数同期装置
Document Type and Number:
Japanese Patent JP3428965
Kind Code:
B2
Abstract:
A frequency synchronizing device for an OFDM/CDMA communication system which exchanges data using an OFDM frame including OFDM symbols each comprised of a plurality of data samples, and a guard interval inserted at the head of each symbol to prevent interference between the symbols. The frequency synchronizing device comprises a frequency corrector for compensating for a frequency offset of received analog data according to a frequency correction signal; an analog/digital converter for converting the received analog data to OFDM frame; and a frequency synchronizer for detecting copy data which is used for creating the guard interval from the OFDM frame and is comprised of some data samples out of the OFDM symbols, to sequentially estimate coarse, regular and fine frequency offsets, and providing the frequency corrector with the frequency correction signal corresponding to the estimated frequency offsets.
Inventors:
Hyun-Kyu Lee
Application Number:
JP2000586030A
Publication Date:
July 22, 2003
Filing Date:
December 01, 1999
Export Citation:
Assignee:
Samsung Electronics Company Limited
International Classes:
H04L5/02; H04L7/00; H04J11/00; H04L27/26; (IPC1-7): H04J11/00; H04L7/00
Domestic Patent References:
| JP2000151554A | ||||
| JP8139777A | ||||
| JP10294713A | ||||
| JP9275385A | ||||
| JP4351137A | ||||
| JP10508158A |
Attorney, Agent or Firm:
Masatake Shiga (1 person outside)