Title:
ダイレクトシーケンス拡散スペクトルシステムのためのキャリアトラッキングループ
Document Type and Number:
Japanese Patent JP4608167
Kind Code:
B2
Abstract:
A wireless telephone system comprises a base transceiver having a base receiver and a plurality of wireless handsets. Each handset comprises a handset transceiver for establishing a DSSS link over a shared channel with the base unit via the base transceiver. Each receiver the base transceiver and the handset transceivers receives a spread-spectrum signal representing symbol data from a transmitter of the system, where each such receiver comprises a derotator that derotates the spread-spectrum signal in accordance with a counter-rotating signal to provide a derotated signal; a correlator for receiving the derotated signal and for providing output symbol data based on the derotated signal; a carrier tracking loop (CTL) phase error estimator for receiving the output symbol data and for generating a CTL phase error signal based upon the rotation of the spread-spectrum signal; and a CTL for generating the counter-rotating signal based on the CTL phase error signal.
Inventors:
Maxim Borisovich Belozelkovsky
Don-Chang Siue
Paul Gossard Nutson
Kumar Ramas Whammy
Don-Chang Siue
Paul Gossard Nutson
Kumar Ramas Whammy
Application Number:
JP2001550894A
Publication Date:
January 05, 2011
Filing Date:
December 22, 2000
Export Citation:
Assignee:
Thomson Licensing
International Classes:
H04B1/7087; H04B1/7085; H04J13/00; H04L27/233; H04L27/00
Domestic Patent References:
| JP11225124A |
Foreign References:
| WO1999031817A1 | ||||
| WO1999059259A1 |
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe