Community Research and Development Information Service - CORDIS

Low cost multichannel receiver

Multi channel interference analysis systems have conventionally used high-performance high-priced receivers. The development of a low cost multi channel receiver has served to effectively prove the feasibility of the development of a dedicated UMTS band low cost unit.

During the project, the impact that different architecture issues and technologies have in receiver performance and cost has been studied. The conclusion is that a conventional super heterodyne architecture, with low cost commercial electronics, and without internal calibration system may obtain similar results to a high performance receiver at a small fraction of the cost only. Special attention needs to be paid to local oscillator coherency and to intermediate filter selection, since they represent the main source of errors between channels.

A lesson has been learned about maximum gain and needed dynamic range of the receiver for a multi channel tool due to received signal characteristics measured in different environments, which have been established in 60dB maximum gain and 50dB dynamic range. The knowledge gained in receiver development will be used in different ongoing and future in-house Telefonica system R&D within TID, all of which integrate different kinds of UMTS receiver. An important part of the systems will be industrialised by different manufacturers, and then installed a used in current 3GPP networks.

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28043 MADRID
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