ZTE

ZTE Communications ›› 2011, Vol. 9 ›› Issue (4): 15-24.

• Special Topic • Previous Articles     Next Articles

Practical Non-Uniform Channelization for Multistandard Base Stations

Álvaro Palomo Navarro, Rudi Villing, and Ronan J. Farrell   

  1. Callan Institute, Electronic Engineering Department, National University of Ireland, Maynooth (NUIM), Ireland
  • Online:2011-12-25 Published:2011-12-25
  • About author:álvaro Palomo Navarro (apalomo@eeng.nuim.ie) received his B.Eng. degree in telecommunications engineering from the Polytechnic University of Madrid (UPM) in 2006. He carried out his final year project in the Signal Processing Department at BTH, Sweden. Between 2006 and 2007 álvaro worked as a test engineer of GSM intelligent networks. Since 2007 he has been a Ph.D. candidate at the Callan Institute at NUI Maynooth. His main research interests include multirate digital signal processing, adaptive equalization, software-defined radio and Multistandard wireless communications systems. He also collaborates with the Electronic Engineering Department as occasional lecturer and tutor.

    Rudi Villing (rudi.villing@eeng.nuim.ie), MIEEE, received his B.Eng. degree in electronic engineering from Dublin City University in 1992. He spent the next 10 years working in the telecommunications software industry and became a specialist in telecommunications management networks (TMN). He worked as a product architect with Euristix Ltd. and Marconi Plc, creating the architecture for strategic network management technologies before joining the Electronic Engineering Department at NUI Maynooth in 2002. He received his Ph.D. degree from NUI Maynooth. His research interests include wireless communications and applications and perceptual signal processing.

    Ronan J. Farrell (ronan.farrell@eeng.nuim.ie) received his B.E. and Ph.D. degrees in electronic engineering from University College Dublin in 1993 and 1998. He is currently a senior lecturer at the National University of Ireland, Maynooth, and director of the Callan Institute for applied ICT. His research interests include physical layer communication technologies, in particular, adaptive receivers, Pas, and active antenna arrays. He is currently the strand leader responsible for radio technologies in the SFI-funded Centre for Telecommunications Research.

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Abstract: A Multistandard software-defined radio base station must perform non-uniform channelization of multiplexed frequency bands. Non-uniform channelization accounts for a significant portion of the digital signal processing workload in the base station receiver and can be difficult to realize in a physical implementation. In non-uniform channelization methods based on generalized DFT filter banks, large prototype filter orders are a significant issue for implementation. In this paper, a multistage filter design is applied to two different non-uniform generalized DFT-based channelizers in order to reduce their filter orders. To evaluate the approach, a TETRA and TEDS base station is used. Experimental results show that the new multistage design reduces both the number of coefficients and operations and leads to a more feasible design and practical physical implementation.

Key words: SDR, non-uniform, channelization, base station, TETRA