Title :
Impulsive noise mitigation in haar DWT based OFDM systems
Author :
Ali, Mohammed Ershad ; Abdullah, K. ; Siddiqi, Mohammad Umar ; Ismail, A.F.
Author_Institution :
Dept. of Electr. & Comput. Eng., Int. Islamic Univ. Malaysia, Kuala Lumpur, Malaysia
Abstract :
In this work, a simple mitigation technique for the effect of impulsive noise in Haar discrete wavelet transform (DWT) based OFDM systems is presented. Based on the analysis for a certain configuration of Haar DWT-OFDM, redundancy in the transmitted samples was found and exploited to mitigate the impulsive noise by replacing the corrupted samples. Under the assumption of Bernoulli-Gaussian model for impulsive noise, the proposed technique is efficient with low probability of impulse occurrence (p). With p = 0.001 and BPSK scheme, it can achieve BER of 10-4 with 5 dB gain in SNR.
Keywords :
Gaussian noise; Haar transforms; OFDM modulation; discrete wavelet transforms; error statistics; impulse noise; interference suppression; phase shift keying; BER; BPSK scheme; Bernoulli-Gaussian model; Haar DWT-OFDM; Haar discrete wavelet transform; OFDM systems; gain 5 dB; impulse occurrence; impulsive noise mitigation; mitigation technique; Binary phase shift keying; Bit error rate; Discrete wavelet transforms; Gain; OFDM; Signal to noise ratio; Bernoulli-Gaussian model; DWT-OFDM; FFT-OFDM; MCM; impulsive noise;
Conference_Titel :
Communications (MICC), 2013 IEEE Malaysia International Conference on
Conference_Location :
Kuala Lumpur
DOI :
10.1109/MICC.2013.6805847
