Invention Grant
- Patent Title: VSB receiver and carrier recovery apparatus thereof
- Patent Title (中): VSB接收机和载波恢复装置
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Application No.: US12478613Application Date: 2009-06-04
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Publication No.: US08031813B2Publication Date: 2011-10-04
- Inventor: Joon Tae Kim , Tok Kim
- Applicant: Joon Tae Kim , Tok Kim
- Applicant Address: KR Seoul
- Assignee: LG Electronics Inc.
- Current Assignee: LG Electronics Inc.
- Current Assignee Address: KR Seoul
- Agency: Lee, Hong, Degerman, Kang & Waimey
- Priority: KR10-2003-0086336 20031201; KR10-2003-0094592 20031222
- Main IPC: H04L27/14
- IPC: H04L27/14 ; H04L27/06

Abstract:
There are provided a VSB receiver and a carrier recovery apparatus thereof, in which a carrier is recovered using a VSB modulated signal. In the VSB receiver, a digital processing part selects a desired channel frequency through an antenna, converts the channel frequency into an intermediate frequency, and digitalizes the channel frequency by passing a predetermined band of the intermediate frequency. A carrier recovery part extracts pilot signals by using a first LPF having a first bandwidth and a second LPF having a second bandwidth, and recovers a baseband carrier wave signal from a passband signal by using one of the extracted pilot signals. A clock demodulation part removes the pilot signal from the baseband carrier wave signal and extracts a synchronizing signal. A noise removing part removes a linear noise and a residual phase jitter of the baseband signal by using the synchronizing signal. A decoding part decodes the baseband signal whose noise is removed. Accordingly, the carrier recovery can be stably performed even when the pilot signal is weak.
Public/Granted literature
- US20090245390A1 VSB RECEIVER AND CARRIER RECOVERY APPARATUS THEREOF Public/Granted day:2009-10-01
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