Title :
Blind Estimation of Channel Length for OFDM Systems
Author :
Sheng, Bin ; Wang, Xiangyang ; You, Xiaohu ; Chen, Lan
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
In orthogonal frequency division multiplexing (OFDM) systems, multipath fading channels introduce interference between adjacent symbols. Although the interference degrades the system performance considerably, it also provides the information of channel impulse response (CIR) length to us. Therefore, based on the estimation of interference in the cyclic prefix (CP) interval, we can use the minimum description length (MDL) criterion to detect the channel length blindly.
Keywords :
OFDM modulation; channel estimation; fading channels; multipath channels; radiofrequency interference; OFDM system; adjacent symbol; blind channel length estimation; channel impulse response; cyclic prefix interval; minimum description length criterion; multipath fading channel interference; orthogonal frequency division multiplexing; Bandwidth; Convolution; Degradation; Delay; Fading; Intersymbol interference; Laboratories; Mobile communication; OFDM; System performance;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5302154
