A Class of Multimode Transmultiplexers Based on the Farrow Structure
2012 (English)In: Circuits, systems, and signal processing, ISSN 0278-081X, E-ISSN 1531-5878, Vol. 31, no 3, 961-985 p.Article in journal (Refereed) Published
This paper introduces multimode transmultiplexers (TMUXs) in which the Farrow structure realizes the polyphase components of general lowpass interpolation/decimation filters. As various lowpass filters are obtained by one set of common Farrow subfilters, only one offline filter design enables us to cover different integer sampling rate conversion (SRC) ratios. A model of general rational SRC is also constructed where the same fixed subfilters perform rational SRC. These two SRC schemes are then used to construct multimode TMUXs. Efficient implementation structures are introduced and different filter design techniques such as minimax and least-squares (LS) are discussed. By means of simulation results, it is shown that the performance of the transmultiplexer (TMUX) depends on the ripples of the filters. With the error vector magnitude (EVM) as the performance metric, the LS method has a superiority over the minimax approach.
Place, publisher, year, edition, pages
Springer Verlag (Germany) , 2012. Vol. 31, no 3, 961-985 p.
Multistandard communications, Transmultiplexers, Sampling rate conversion, Farrow structure
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-77317DOI: 10.1007/s00034-011-9351-4ISI: 000302740700009OAI: oai:DiVA.org:liu-77317DiVA: diva2:526368