Method and apparatus for reducing code phase search space

Details Method and apparatus for reducing code phase search space Method and apparatus for reducing code phase search space

2008-05-05

2010-06-15

Wang, Ted M (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S150000, C375S343000, C342S378000, C701S207000

Reexamination Certificate

active

07738531

ABSTRACT:
A GPS communication system including a server and a client, each including a GPS receiver, for reducing the code phase search space of the GPS receiver of the client. The communication system includes a transmitter for transmitting timing information from the server to the client to help the client locate a first satellite, and a receiver for using timing differences between the satellites to synchronize and locate other satellites. The code phase search space is reduced by reducing the number of phase hypotheses that must be calculated to establish communication between the server and the client.

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