Power-efficient acquisition of a CDMA pilot signal

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5781543
SERIAL NO

08705465

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A system and method for acquiring a code division multiple access (CDMA) pilot signal having a pilot pseudonoise (PN) code offset in a CDMA communication system. A received signal is correlated with a first set of PN code offset hypotheses. If this first 'full' search is unsuccessful in acquiring the CDMA pilot signal, the method includes waiting for a first period, and then correlating the received signal with a second set of PN code offset hypotheses which are a subset of said first set of PN code offset hypotheses and therefore requires less search time. If this 'mini' search is unsuccessful in acquiring the CDMA pilot signal the method includes waiting for a second period and then quickly measuring the energy of the received signal. If the received energy exceeds a threshold, then a 'mini' search is immediately performed. These alternating search techniques of full, mini, micro are repeated.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
QUALCOMM INCORPORATEDSAN DIEGO, CA20902

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ault, Jan C Santee, CA 16 534
Hughes, Robbin D San Diego, CA 15 418

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
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