Artificial window size interrupt reduction system for CDMA recei

Details Artificial window size interrupt reduction system for CDMA recei Artificial window size interrupt reduction system for CDMA recei

1995-06-06

1998-03-10

Nguyen, Chau

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

370500, 375200, H04B 7216, H04B 776

Patent

active

057269823

ABSTRACT:
A method and an apparatus for searching code division multiple access pilot signal energies includes limiting a pilot signal window size above a lower limit and only analyzing search result data corresponding to an instructed pilot signal window size. A central processing unit instructs a searcher receiver within a mobile station modem application specific integrated circuit to search for pilot signal energies within an instructed pilot signal search window unless the instructed pilot signal window size is smaller than a pilot signal window size lower limit. In such a case, the pilot signal search window size is artificially designated as the pilot signal window size lower limit to prevent excessive search completion interrupts from over utilizing central processing unit resources. The central processing unit analyzes only the middle search results corresponding to the pilot signal window size as instructed from the base station to maintain the ability of effectively searching pilot signal window sizes smaller than the pilot signal window size lower limit.

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"Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System" TIA/EIA/IS-95 Interim Standard--Sections 6.6 and 7.7.2.3.2.1-IS-95, Jul. 1993.

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