Title :
Decision-directed channel estimation for supporting higher terminal velocities in OFDM based WLANs
Author_Institution :
Secure Mobile Solutions, Infineon Technol. AG, Munich, Germany
Abstract :
A channel estimation technique which allows the support of higher terminal velocities in OFDM based WLANs (HIPERLAN/2, IEEE 802.11a) is presented. After an initial channel estimation based on the preamble, the channel impulse response is tracked by means of detected and remodulated data symbols. A good performance is obtained in both line-of-sight (LOS) and nonline-of-sight (nLOS) environments with a reasonable receiver complexity.
Keywords :
OFDM modulation; channel estimation; mobile radio; transient response; wireless LAN; HIPERLAN/2; IEEE 802.11a; OFDM based WLAN; channel impulse response; decision-directed channel estimation; higher terminal velocity; line-of-sight environment; nonLOS environment; orthogonal frequency division multiplexing; remodulated data symbol; wireless local-area network; Channel estimation; Degradation; Demodulation; Digital video broadcasting; Frequency domain analysis; Interpolation; OFDM modulation; Payloads; Telephony; Wireless LAN;
Conference_Titel :
Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE
Print_ISBN :
0-7803-7974-8
DOI :
10.1109/GLOCOM.2003.1258449
