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: PDF

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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.