发明名称 |
Carrier tracking loop for direct sequence spread spectrum systems |
摘要 |
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. |
申请公布号 |
AU2455801(A) |
申请公布日期 |
2001.07.16 |
申请号 |
AU20010024558 |
申请日期 |
2000.12.22 |
申请人 |
THOMSON LICENSING S.A. |
发明人 |
MAXIM BORISOVICH BELOTSERKOVSKY;DONG-CHANG SHIUE;PAUL GOTHARD KNUTSON;KUMAR RAMASWAMY |
分类号 |
H04J13/04;H04L27/00;H04L27/233 |
主分类号 |
H04J13/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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