Receiving apparatus and gain control method

Details Receiving apparatus and gain control method Receiving apparatus and gain control method

2006-05-02

2006-05-02

Bayard, Emmanuel (Department: 2638)

Pulse or digital communications

Spread spectrum

Direct sequence

Reexamination Certificate

active

07039095

ABSTRACT:
A code generation section106outputs a primary code stored in a code storage section105at a predetermined timing. A despreading section107measures a delay profile by correlation between the output signals of an analog-to-digital conversion section104and the primary codes of the above code generation section106.A user judgment section111detects a maximum path for each user, based on the above delay profiles. An electric-field-strength calculation section112calculates the sum of amplitude values Rcellof the own cell from an electric power Pi of the maximum path PAifor each user i. A gain-coefficient calculation section113calculates a gain coefficient so that the above Rcellbecomes equal to a target value. Thereby, AGC may be performed with good accuracy, and deterioration in the received quality may be prevented, when an MUD type interference canceller is used.

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