Jonas Fritzin1, Hans Geltinger2, Marcus Groinig3, Daniel Gruber3, Simon Gruenberger3, Thomas Hartig3, Vahur Kampus3, Boris Kapfelsberger1, Franz Kuttner3, Stephan Leuschner1, Thomas Maletz1, Andreas Menkhoff1, Jose Moreira1, Alan Paussa3, Davide Ponton3, Harald Pretl4, Daniel Sira1, Ulrich Steinacker1, Nenad Stevanovic1 Intel, Neubiberg, Germany DPMA, Munich, Germany 3 Intel, Villach, Austria 4 DMCE, Linz, Austria 1 2 The evolving trend for increasing data rates in cellular communication systems with limited and fragmented frequency spectrum requires enhanced spectral efficiency of today's and future communication standards. The resulting need for high-order modulation schemes with large peak-to-average power ratio results in stringent requirements on in-channel linearity and SNR. At the same time FDD operation in SAW filter-less designs enforces very demanding limits for out-ofband and spurious emissions. Digital polar TX concepts have demonstrated low
Michael Fulde1, Alexander Belitzer1, Zdravko Boos1, Michael Bruennert1,