Title :
A Novel Parametric Channel Estimation Scheme for OFDM Systems
Author :
Liu, Siyang ; Wang, Feifei ; Zhang, Ranran ; Xie, Gang ; Liu, Yuanan
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
A novel parametric channel estimation scheme for orthogonal frequency-division multiplexing (OFDM) systems is proposed in this paper. The new scheme first makes use of the Hannan-Quinn (HQ) criterion to estimate the number of channel paths. After obtaining the number of channel paths, the multipath time delays can be easily obtained via some simple operations. Then the channel coefficients are estimated by utilizing the estimated number of channel paths and time delays. Compared with the existing parametric channel estimation scheme, as well as offering enhanced performance under low signal to noise ratio (SNR) conditions, our scheme requires less complexity.
Keywords :
OFDM modulation; channel estimation; delays; Hannan-Quinn criterion; OFDM systems; channel coefficients; channel paths; multipath time delays; orthogonal frequency-division multiplexing systems; parametric channel estimation scheme; Channel estimation; Delay effects; Delay estimation; Demodulation; Fading; Frequency division multiplexing; OFDM; Parameter estimation; Signal to noise ratio; Telephony;
Conference_Titel :
Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-1042-2
Electronic_ISBN :
978-1-4244-1043-9
DOI :
10.1109/GLOCOM.2007.786
