Title :
OFDM transmission for ISI channels using variable-length pilot symbols and pre-FFT equalizer with enhanced MRC diversity reception
Author :
Yoshida, Makoto ; Ishizu, Eizou ; Yamashita, Noboru ; Amezawa, Yasuharu
Author_Institution :
Fujitsu Ltd., Yokosuka, Japan
Abstract :
We present an attractive approach for OFDM transmission, using variable-length pilot symbols (VLP) and a pre-FFT equalizer, performed by time-domain signal processing. The performance of our proposed system is examined using broadband and fast fading ISI channels. The results indicate the potential for a high-quality channel for the fourth generation (4G) mobile communication system that provides both a data rate of more than 100 Mbps and speed of more than 200 km/h, and has a delay spread of approximately σ=2μs.
Keywords :
4G mobile communication; OFDM modulation; delays; diversity reception; equalisers; fading channels; fast Fourier transforms; intersymbol interference; mobile radio; signal processing; 101.93 Mbit/s; 17 to 207 km/h; 4G mobile communication system; 5 GHz; ISI channels; MRC diversity reception; OFDM transmission; broadband channels; delay spread; fast fading channels; fourth generation mobile communication system; pre-FFT equalizer; time-domain signal processing; variable-length pilot symbols; Degradation; Delay; Diversity reception; Equalizers; Fading; Intersymbol interference; OFDM; Signal processing; Time domain analysis; Wireless LAN;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258643
