Patent ID: 7113807

Claim:
A base station in a mobile communication network, comprising: first and second polarized antennas respectively having two branches and being formed in a same sector; a first delay element for time-delaying a signal received at the second branch from among signals received at the first and second branches of the first polarized antenna so as to distinguish an offset of the signal from an offset of a signal received at the first branch; a second delay element for time-delaying a signal received at the fourth branch from among signals received at the third and fourth branches of the second polarized antenna so as to distinguish an offset of the signal from an offset of a signal received at the third branch; a first adder for adding the signal received at the first branch of the first polarized antenna and a signal time-delayed by the first delay element; a second adder for adding the signal received at the third branch of the second polarized antenna and a signal time-delayed by the second delay element; and a modem processor for receiving the signals added by the first and second adders and separating an offset distinguishable signal from the respective signals.