Adaptive Windowing for OFDM with Dense Subcarrier Spacing in Mobile Channels
Conference: OFDM 2012 - 17th International OFDM Workshop 2012 (InOWo'12)
08/29/2012 - 08/30/2012 at Essen, Germany
Proceedings: OFDM 2012
Pages: 6Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
Robert, J.; Zoellner, J.; Slimani, M. (Institut für Nachrichtentechnik, TU Braunschweig, Germany)
This paper presents an algorithm for adaptive windowing for OFDM with dense subcarrier spacing. Instead of using a rectangular DFFT window a shaped window is employed. This algorithm has been implemented in our software-based DVB-T2 receiver. The receiver consciously adapts the shaping window in order to reach the best compromise between Inter Symbol and Inter Carrier Interference in highly mobile channels. The results indicate that a significant robustness increase can be obtained. Keywords — DVB-T2, OFDM windowing, software-defined radio.