On-demand receive filtering in an UMTS terminal


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Potman, J. and Schiphorst, R. and Slump, C.H. (2008) On-demand receive filtering in an UMTS terminal. In: Proceedings of the Ninth IEEE International Workshop on Signal Processing Advances in Wireless Communications, 6-9 July 2008, Recife, Brazil.

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Abstract:This paper describes a novel on-demand receive filter in an UMTS terminal. The receive filter is the first function after the Analog-to-Digital converter and is for that reason one of the most computation intensive parts in a receiver. The proposed filter architecture measures the out-of-band interference and calculates the required attenuation, which is used to select the appropriate filter. To assess the advantages of this on-demand receive filter, we have carried out field strength measurements in the UMTS FDD downlink band (2.1 GHz). These measurements were carried out in Amsterdam, a dense urban area with 5 active UMTS operators. Our measurement results show that in a live network configuration there is almost no out-of-band interference. Moreover, an on-demand filter would save in this case more than 68% power compared to a fixed conventional receive filter.
Item Type:Conference or Workshop Item
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/64900
Official URL:http://dx.doi.org/10.1109/SPAWC.2008.4641601
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