Title :
A New Equalization Scheme for OFDM Systems with Insufficient Guard Interval
Author :
Zhao, Liye ; Yang, Bo ; Men, Aidong
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
The conventional one-tap equalizer for OFDM based communication systems fails to eliminate the ISI and ICI introduced by multipath propagation when the Channel Impulse Response (CIR) length exceeds the duration of Guard Interval (GI). We propose, in this paper, a new equalization scheme for the suppression of insufficient GI generated interference using redundancy provided by the guard bands. Simulation results show that the proposed scheme can effectively recovers the contaminated OFDM signal.
Keywords :
OFDM modulation; equalisers; intersymbol interference; multipath channels; ICI; ISI; OFDM system equalization scheme; channel impulse response; insufficient guard interval; multipath propagation; Broadband communication; Communication systems; Decision feedback equalizers; Fading; Frequency domain analysis; Interference suppression; Intersymbol interference; Mean square error methods; OFDM; Redundancy;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2008. WiCOM '08. 4th International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-4244-2107-7
Electronic_ISBN :
978-1-4244-2108-4
DOI :
10.1109/WiCom.2008.176
