Title :
Optimum Nyquist windowing for improved OFDM receivers
Author :
Müller-Weinfurtner, Stefan H. ; Hube, Johannes B.
Author_Institution :
Lehrstuhl fur Nachrichtentechnik II, Erlangen-Nurnberg Univ., Germany
Abstract :
Conventional orthogonal frequency-division multiplexing (OFDM) receivers disregard oversized guard intervals. An (adaptive) Nyquist-shaped receive window could exploit signal samples in its unconsumed portion to improve demodulation. The OFDM transmitter is not modified, subcarrier orthogonality is preserved, and the DFT size may be retained. In this paper, we optimize the window shape by considering additive noise and intercarrier interference due to carrier frequency offsets, jointly
Keywords :
OFDM modulation; adaptive signal processing; adjacent channel interference; demodulation; optimisation; receivers; signal sampling; thermal noise; DFT size; OFDM receivers; adaptive Nyquist-shaped receive window; additive noise; carrier frequency offsets; intercarrier interference; optimum Nyquist windowing; optimum demodulation; orthogonal frequency-division multiplexing; oversized guard intervals; signal samples; subcarrier orthogonality; Baseband; Demodulation; Digital video broadcasting; Discrete Fourier transforms; Interference; Noise shaping; OFDM modulation; Shape; Signal to noise ratio; Transmitters;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891232
