Invention Grant
- Patent Title: Low gate count sequential multitap correlator
- Patent Title (中): 低门数顺序多点相关器
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Application No.: US11628707Application Date: 2004-07-05
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Publication No.: US07936846B2Publication Date: 2011-05-03
- Inventor: Muralikrishna Srikantiah , Nagaraj Channarayapatna Shivaramaiah
- Applicant: Muralikrishna Srikantiah , Nagaraj Channarayapatna Shivaramaiah
- Applicant Address: IN Bangalore
- Assignee: Accord Software & Systems Pvt. Ltd.
- Current Assignee: Accord Software & Systems Pvt. Ltd.
- Current Assignee Address: IN Bangalore
- Agency: Lipton, Weinberger & Husick
- Agent Ash Tankha
- International Application: PCT/IN2004/000196 WO 20040705
- International Announcement: WO2006/003673 WO 20060112
- Main IPC: H04L27/06
- IPC: H04L27/06 ; H04B1/00 ; H04B7/185 ; H04H20/74

Abstract:
A system and method of achieving a reduced time for first fix in a global positioning system receiver (GPS). The GPS receiver includes a low gate count sequential multitap correlator (102) in combination with a digital signal processor (106) and a down converter (101). The low gate count sequential multitap correlator (102) conducts sequential correlation on the incoming GPS signals using a multitapping and pipelining scheme. The multitapping process involves tapping the shift register and simultaneously correlating the signal samples and tapped chips. The pipelining process includes sampling data, mapping incoming samples, shifting carrier acquisition code, multiplying and accumulating the code and signal products. The digital signal processor conducts the frequency search.
Public/Granted literature
- US20080069189A1 Low Gate Count Sequential Multitap Correlator Public/Granted day:2008-03-20
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