IEEE Transactions on Communications
Adaptive Lp-norm metric for secondary BICM-OFDM systems
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Performance analysis of a multiband OFDM UWB system in the presence of narrowband interference
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Iterative data detection for OFDM systems with unknown narrowband interference
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
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The effect of narrowband interference on OFDM systems is considered, with particular regard to the receiver post-detection bit error rate performance. It is shown both by analysis and by computer simulation that the ensemble average bit error rate is severely affected by narrowband interference and that particular values of interferer carrier frequency and phase can produce bit error rates significantly higher than the ensemble average. An interference suppression technique based on excision (notch) filtering is proposed and is shown by computer simulation to improve ensemble average bit error rates to about 0.001 for BPSK modulated OFDM with signal-to-interference ratios as low as -30 dB