Adaptive receive filter structures for UMTS

J. Potman, F.W. Hoeksema, C.H. Slump

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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    Abstract

    Receive filtering in the Universal Mobile Telecommunication System (UMTS) handset has two functions. Performing Root- Raised Cosine (RRC) filtering to mitigate Inter Chip Interference (ICI) and providing selectivity in order to be able to operate in the presence of strong interference. This strong interference is however not always present in practice. Therefor it is attractive to make the selectivity adaptive on the measured amount of interference. This is possible with an adaptive digital receive filter structure found in literature, which reduces the number of used filter coefficients when less selectivity is required. This reduces the required number of operations per filtered sample. This structure however has the disadvantage that it increases ICI for low selectivity. This can be solved by using a modified adaptive digital receive filter structure which uses optimized sets of filter coefficients with different lengths for a range of selectivity requirements. The required number of operations per filtered sample still reduces when less selectivity is required, but the filter structure becomes more complex because it needs to store and load the sets of filter coefficients.
    Original languageEnglish
    Title of host publicationSPS-DARTS 2006
    Subtitle of host publicationthe second annual IEEE Benelux/DSP Valley Signal Processing Symposium
    Place of PublicationAntwerp
    PublisherIEEE EMBS Benelux Chapter
    Pages55-59
    Number of pages5
    Publication statusPublished - 28 Mar 2006
    Event2nd Annual IEEE BENELUX/DSP Valley Signal Processing Symposium, SPS-DARTS 2006 - Antwerp, Belgium
    Duration: 28 Mar 200629 Mar 2006
    Conference number: 2

    Conference

    Conference2nd Annual IEEE BENELUX/DSP Valley Signal Processing Symposium, SPS-DARTS 2006
    Abbreviated titleSPS-DARTS
    CountryBelgium
    CityAntwerp
    Period28/03/0629/03/06

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  • Cite this

    Potman, J., Hoeksema, F. W., & Slump, C. H. (2006). Adaptive receive filter structures for UMTS. In SPS-DARTS 2006: the second annual IEEE Benelux/DSP Valley Signal Processing Symposium (pp. 55-59). Antwerp: IEEE EMBS Benelux Chapter.