Patent ID: 8010160
Filing Date: 2011-08-30
Classification: H01Q,H04W

Abstract:
1. A system for combining output signals from first and second base stations for radiation from a common antenna arrangement, comprising: a transmitter unit provided between the first base station and the antenna arrangement, the transmitter unit containing a device for aggregate signal forming, a D/A converter and a transmission power amplifier, wherein the first base station has an output connected to the device for aggregate signal forming such that an output signal from the first base station serves as a first digital input signal to the device for aggregate signal forming; and a converting device to convert an analog signal produced by the second base station into a second digital input signal, which is supplied to the device for aggregate signal forming, wherein the output signal from the first base station is a digital signal and the output signal from the second base station is an analog signal, and wherein the device for aggregate signal forming forms an aggregate signal that reaches the antenna arrangement via the D/A converter and the transmission power amplifier such that signals carrying information originating from the first and second base stations respectively, are amplified together before wireless transmission from the antenna arrangement.