Abstract: The invention teaches a solution for a Time Division Duplex (TDD) and Frequency Division Duplex (FDD) networks. In the solution, a threshold value is set for a radio frequency gain. The value of the radio frequency gain is limited to the threshold value during an initial synchronization phase where user equipment is first trying to receive synchronization signals in a transmission from a base station.

Abstract: An apparatus comprising an analog filter, an analog to digital converter coupled to said analog filter; and a digital filter coupled to said analog to digital converter; wherein the apparatus is configured such that distortion introduced into a filtered signal by said analog filter is substantially compensated by said digital filter.

Abstract: A received signal is amplified in an amplifier to create an amplified signal. The amplified signal is then filtered. The power of permanent common pilot sub-carriers present in the filtered amplified signal is calculated. A wideband power measurement is determined based on the amplified signal, and a narrowband power measurement is determined based on the filtered amplified signal. The first gain for the amplifier is controlled in dependence on the calculated power of the permanent common pilot sub-carriers, the wideband power measurement and the narrowband power measurement. The power of the permanent common pilot sub-carriers may be calculated in the frequency domain to mitigate fast switching of the controlled first gain. The filtered amplified signal may be amplified in a further amplifier, and a second gain can be controlled for the further amplifier in dependence on the calculated power of the permanent common pilot sub-carriers, the wideband power measurement and the narrowband power measurement.

Abstract: The invention teaches a solution for a Time Division Duplex (TDD) and Frequency Division Duplex (FDD) networks. In the solution, a threshold value is set for a radio frequency gain. The value of the radio frequency gain is limited to the threshold value during an initial synchronization phase where user equipment is first trying to receive synchronization signals in a transmission from a base station.

Abstract: An apparatus comprising an analog filter, an analog to digital converter coupled to said analog filter; and a digital filter coupled to said analog to digital converter; wherein the apparatus is configured such that distortion introduced into a filtered signal by said analog filter is substantially compensated by said digital filter.

Abstract: An apparatus comprising an amplifier configured to amplify a received signal; a filter coupled to an output of said amplifier and configured to filter the amplified signal; and a controller configured to control a first gain for said amplifier in dependence on a characteristic of the amplified signal and a characteristic of said filtered received signal.