Method of and apparatus for pilot channel acquisition

Details Method of and apparatus for pilot channel acquisition Method of and apparatus for pilot channel acquisition

1996-08-30

1999-03-30

Pham, Chi H.

Multiplex communications

Communication over free space

Repeater

370209, 370331, 370332, 375200, 375206, 455436, 455438, H04B 7216

Patent

active

058897682

ABSTRACT:
A wireless communication device 100 acquires a pilot channel before an assigned slot when the wireless communication device is operating in the slotted mode of a CDMA system. The wireless communication device comprises a searcher receiver 107 that determines the short-term average pilot strength of active and neighbor pilot channels. Finger receivers 107 determine the long-term average pilot strength of the active and neighbor pilot channels. A logic and control circuit 113 assigns the finger receivers to the pilot channels according to their short-term average pilot strength, determines if the long-term average pilot strength of a neighbor channel is greater than the active pilot channel's pilot strength, and determines to hand off to the neighbor pilot channel with the greater long-term average pilot strength. Moreover, an early detection correlation length can be dynamically adjusted according to the pilot strength of the active pilot channel to shorten the pilot acquisition process.

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patent: 5644591 (1997-07-01), Sutton
patent: 5691974 (1997-11-01), Zehavi et al.

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