Matched filter and receiver for mobile radio communication...

Details Matched filter and receiver for mobile radio communication... Matched filter and receiver for mobile radio communication...

2006-02-21

2006-02-21

Fan, Chieh M. (Department: 2638)

Pulse or digital communications

Spread spectrum

Direct sequence

C150S163000

Reexamination Certificate

active

07003022

ABSTRACT:
A matched filter requiring no high-speed processor and which consumes less power is disclosed. Partial filters301–30N obtained by dividing number of matched filter taps by N are provided with a controller341for controlling which partial filters are enabled. The controller341is supplied with maximum amount of delay of an input signal and with symbol timing. On the basis of the maximum amount of delay, the controller341enables only the minimum number of partial filters301–30nthat are capable of executing an amount of computation that is required in one symbol period. The enabled partial filters are used multiple number of times per symbol period and the output, each time, integrated sample by sample. Since the disabled partial filters will not operate, it is possible to reduce power consumption and computation time.

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