Optimized Filter Design in LTE Systems Using Nonlinear Optimization

Konferenz: European Wireless 2011 - Sustainable Wireless Technologies
27.04.2011 - 29.04.2011 in Vienna, Austria

Tagungsband: European Wireless 2011

Seiten: 7Sprache: EnglischTyp: PDF

Persönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt

Schlechter, Thomas; Lunglmayr, Michael (Institute of Networked and Embedded Systems, Embedded Systems and Signal Processing, Klagenfurt University, Klagenfurt, Austria)

For mobile communication systems power efficiency is a very important issue. Especially for mobile user equipments (UE) a careful management and efficient use of the limited energy resources is mandatory. In fact, though, quite an amount of energy is wasted in todays UEs, as analog and digital frontend in communication systems are designed for worst case scenarios, meaning those are overengineered concerning e.g. amplifier linearity and filter slope steepnesses for most practical communication scenarios. Capturing the environmental transmission conditions and adapting the receiver architecture to the actual needs allows to save energy during the receiving process. We present a highly efficient approach for the implementation of such an architecture. This paper gives an overview on the basic properties of those approaches and discusses the constrained interior-point method for optimizing the filter design.