Title :
Robust OFDM reception with near-optimum Nyquist window
Author :
Müller-Weinfurtner, Stefan H. ; Huber, Johannes B.
Author_Institution :
Lehrstuhl fur Nachrichtentech., Erlangen-Nurnberg Univ., Germany
Abstract :
Conventional orthogonal frequency-division multiplexing (OFDM) receivers disregard oversized guard intervals, even though the signal samples in its unconsumed portion can be exploited to enable an improved demodulation. Previously, the optimum receiver window has been found to be approximately linear in the rolloff region. Now, we derive the optimum slope of a simple a-priori linear rolloff region according to the minimum mean-squared error (MMSE) criterion, considering additive noise and intercarrier interference due to carrier frequency offsets, jointly
Keywords :
Nyquist criterion; OFDM modulation; land mobile radio; least mean squares methods; noise; optimisation; radio receivers; radiofrequency interference; signal sampling; MMSE criterion; OFDM receivers; additive noise; carrier frequency offsets; demodulation; intercarrier interference; linear rolloff region; minimum mean-squared error; mobile radio; near-optimum Nyquist window; optimum receiver window; optimum slope; orthogonal frequency-division multiplexing; robust OFDM reception; rolloff region; signal samples; Additive noise; Demodulation; Discrete Fourier transforms; Interference; Laboratories; Linear approximation; OFDM modulation; Robustness; Shape; Transmitters;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.797142
