Title :
A novel approach for interference suppression in multi-subband convolutional coded OFDM system
Author :
Chen, Ke ; Huang, Xiaojing ; Xi, Jiangtao
Author_Institution :
Sch. of Electr., Comput. & Telecommun., Univ. of Wollongong, Wollongong, NSW, Australia
Abstract :
This paper proposes a novel approach of suppressing narrowband interference from a multi-subband convolutional coded orthogonal frequency division multiplexing (OFDM) system. In this system, the convolutional coded data symbols using different coding generators are transmitted in different subbands. By identifying and discarding the interfered subband(s), the interference level can be greatly reduced and the system performance of the OFDM system can be improved. The interference thresholds for discarding the interfered subband(s) are determined through simulations over additive white Gaussian noise (AWGN) channel for demonstration purpose. The principle can also be applied to multipath fading channel.
Keywords :
AWGN channels; OFDM modulation; convolutional codes; fading channels; interference suppression; additive white Gaussian noise channel; coding generator; convolutional coded data symbol; demonstration purpose; multipath fading channel; multisubband convolutional coded OFDM system; narrowband interference suppression; orthogonal frequency division multiplexing system; Convolution; Convolutional codes; Encoding; Interference; OFDM; Phase shift keying; Signal to noise ratio;
Conference_Titel :
Communications and Information Technologies (ISCIT), 2010 International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-7007-5
Electronic_ISBN :
978-1-4244-7009-9
DOI :
10.1109/ISCIT.2010.5665074
