US 8,045,925 B2 · Wireless communication system and intermediate frequency signal loss compensation circuit thereof

Abstract

An exemplary intermediate frequency (IF) signal loss compensation circuit for an outdoor unit of a communication system includes a sending circuit, a detection circuit, a receiving circuit, and a control circuit. The detection circuit detects in substantially real-time the loss of signal transmitted via a cable from the indoor to the outdoor unit, and transmits loss signal to the control circuit. The control circuit compares the loss signal with a pre-stored signal to determine the loss and then, the control circuit gives loss signals of the sending circuit a variable gain compensation according to the loss. The control circuit also gives loss signals of the receiving circuit a variable gain compensation in advance. The IF signal loss compensation circuit can detect the IF signal loss in substantially real-time, giving the IF signal a variable gain compensation for the loss.

Claims13

Dependent claims

An intermediate frequency (IF) signal loss compensation circuit for an outdoor unit of a network communication system, comprising:

a sending circuit connected to an antenna of the network communication system, wherein the sending circuit is connected to the indoor unit of the network communication system through a cable and receives an IF signal from an indoor unit through the cable;
a receiving circuit connected to the antenna of the network communication system, wherein the receiving circuit is connected to the indoor unit of the network communication system through the cable;
a detection circuit detecting the IF signal received by the sending circuit in substantially real-time;
and
a control circuit determining signal loss in the cable by comparing the IF signal detected by the detection circuit with a pre-stored signal corresponding to the IF signal, and compensates the signal loss in the cable in substantially real-time by varying gain amplifications of the sending circuit and the receiving circuit according to the determined signal loss in the cable.

2 more elements

Dependencies are inferred from the claim text.

Wireless communication system and intermediate frequency signal loss compensation circuit thereof

Life of this patent

Wireless communication system and intermediate frequency signal loss compensation circuit thereof

Life of this patent

Abstract

Claims13