Receiver used in spread spectrum communication system

Details Receiver used in spread spectrum communication system Receiver used in spread spectrum communication system

2006-09-05

2006-09-05

Ramakrishnaiah, Melur (Department: 2614)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S249100, C455S253200, C375S316000

Reexamination Certificate

active

07103335

ABSTRACT:
In a receiver used in the spread spectrum communication system, power of a base band signal which is obtained by A/D converting an output of a quadrature demodulator is detected by a base band signal power-detecting unit, where the quadrature demodulator demodulates an IF signal outputted from an AGC amplifier. The base band signal is despeaded by a despreading unit, and converted into a symbol rate signal, power of which is detected by a symbol rate signal power-detecting unit. An error rate of a desired wave is detected by an error rate-detecting unit on the basis of the symbol rate signal. Output signals of the base band signal power-detecting unit, the symbol rate signal power-detecting unit, and the error rate-detecting unit are supplied to an AGC amplifier-controlling unit which controls a gain of the AGC amplifier.

REFERENCES:
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Japanese Office Action dated Mar. 4, 2003 with English language translation.

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