Abstract: A calibration system for calibrating a number of transceivers, each comprising an in-phase signal path and a quadrature signal path in receive direction and/or in transmit direction is disclosed herein.

Abstract: A calibration system for calibrating a number of transceivers, each comprising an in-phase signal path and a quadrature signal path in receive direction and/or in transmit direction is disclosed herein.

Abstract: An antenna test system for testing an antenna with a plurality of antenna elements is disclosed.

Abstract: A modular antenna system and a method for signal processing using the modular antenna system are provided to overcome the missing scalability of conventional antenna arrays and improve the overall antenna array performance as well as facilitate individually replacing defective or not reliably operating radio-units or radio-subunits in modular antenna array systems and provide a calibration procedure which can be adapted to a scalable antenna array. The modular antenna system includes a base station, and at least one radio-unit comprising at least two radio-subunits. Each radio-subunit includes a radio-module and an antenna-module. The radio-module includes a digital signal-processing unit, at least a transceiver, a front-end and a power amplifier. The radio-subunits provide an identical architecture and are modularly connected together via a connector interface and each radio-subunit has an own IQ-input and an own IQ-output.

Abstract: A modular antenna system and a method for signal processing using the modular antenna system are provided to overcome the missing scalability of conventional antenna arrays and improve the overall antenna array performance as well as facilitate individually replacing defective or not reliably operating radio-units or radio-subunits in modular antenna array systems and provide a calibration procedure which can be adapted to a scalable antenna array. The modular antenna system includes a base station, and at least one radio-unit comprising at least two radio-subunits. Each radio-subunit includes a radio-module and an antenna-module. The radio-module includes a digital signal-processing unit, at least a transceiver, a front-end and a power amplifier. The radio-subunits provide an identical architecture and are modularly connected together via a connector interface and each radio-subunit has an own IQ-input and an own IQ-output.

Abstract: Embodiments of the present invention disclose a method and a base station for coordinating cell interference. The method includes: receiving each backhaul signal transmitted by each cooperative base station, where the backhaul signal is determined by the cooperative base station according to strength of a signal received from a served user and strength of a signal received by a serving base station from an interfering user in the cooperative base station; and combining, at different stages of baseband processing and according to a type of each backhaul signal, a backhaul signal of a corresponding type and a user signal received from each user. An embodiment of the present invention further provides a base station. According to the embodiments of the present invention, backhaul transmission capacity is maximally utilized, backhaul transmission efficiency is improved, and relatively high performance is obtained.

Abstract: Embodiments of the present invention disclose a method and a base station for coordinating cell interference. The method includes: receiving each backhaul signal transmitted by each cooperative base station, where the backhaul signal is determined by the cooperative base station according to strength of a signal received from a served user and strength of a signal received by a serving base station from an interfering user in the cooperative base station; and combining, at different stages of baseband processing and according to a type of each backhaul signal, a backhaul signal of a corresponding type and a user signal received from each user. An embodiment of the present invention further provides a base station. According to the embodiments of the present invention, backhaul transmission capacity is maximally utilized, backhaul transmission efficiency is improved, and relatively high performance is obtained.

Abstract: A method for decoding a wireless transmission in a communication system, particularly for mobile communications, comprising a plurality of receiver stations communicatively coupled to a common decoder station, wherein the receiver stations transmit digital representations of received user signals to the common decoding entity. These digital representations are initially transmitted to the common decoder station in coarse granularity, and in case the decoder station cannot decode the transmitted digital representations of one or multiple user signals, the decoder requests a refined digital representation of the received signals from at least one receiver station.

Abstract: A method for decoding a wireless transmission in a communication system, particularly for mobile communications, comprising a plurality of receiver stations communicatively coupled to a common decoder station, wherein the receiver stations transmit digital representations of received user signals to the common decoding entity. These digital representations are initially transmitted to the common decoder station in coarse granularity, and in case the decoder station cannot decode the transmitted digital representations of one or multiple user signals, the decoder requests a refined digital representation of the received signals from at least one receiver station.