Method of adaptive Walsh code allocation

Details Method of adaptive Walsh code allocation Method of adaptive Walsh code allocation

2007-10-09

2007-10-09

Ha, Dac V. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S146000, C375S343000

Reexamination Certificate

active

10435966

ABSTRACT:
A method of adaptive Walsh code allocation in a wireless communication system. The method includes the step of each voice user transmitting quality condition signal, such as a pilot signal strength measurement to a corresponding base station. Upon receiving each quality condition signal, the method includes determining a spreading factor for each voice user in response to its quality condition signal. A Walsh code is thereafter allocated to each voice user in response to the determined corresponding spreading factor. Thus, for example, if the quality condition signal of a first voice user is relatively higher than the quality condition signal of a second voice user, the spreading factor allocated to the first voice user should be longer than the spreading factor of the second voice user.

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