Title :
A farrow-structure-based multi-mode transmultiplexer
Author :
Eghbali, Amir ; Johansson, Håkan ; Löwenborg, Per
Author_Institution :
Dept. of Electr. Eng., Linkoping Univ., Linkoping
Abstract :
This paper introduces a multi-mode transmultiplexer (TMUX) consisting of Farrow-based variable integer sampling rate conversion (SRC) blocks. The polyphase components of general interpolation/decimation filters are realized by the Farrow structure making it possible to achieve different linear-phase finite-length impulse response (FIR) lowpass filters at the cost of a fixed set of subfilters and adjustable fractional delay values. Simultaneous design of the subfilters, to achieve overall approximately Nyquist (Mth-band) filters, are treated in this paper. By means of an example, it is shown that the subfilters can be designed so that for any desired range of integer SRC ratios, the TMUX can approximate perfect recovery as close as desired.
Keywords :
FIR filters; transmultiplexing; farrow-structure-based multi-mode transmultiplexer; linear-phase finite-length impulse response lowpass filters; variable integer sampling rate conversion blocks; Bandwidth; Bit rate; Delay; Finite impulse response filter; Frequency conversion; Interpolation; Multiaccess communication; Sampling methods; Telecommunication standards; Time division multiple access; Multi-mode communications; sampling rate conversion; transmultiplexers;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4542117
