Title :
A channel-estimate-based decision feedback equalizer robust under impulsive noise
Author :
Pelekanakis, Konstantinos ; Chitre, Mandar
Author_Institution :
Acoust. Res. Lab., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
A channel-estimate-based decision feedback equalizer (CEB DFE) robust under impulsive noise is presented for single-input multiple-output (SIMO) underwater acoustic com-munications. Channel estimation is performed via the improved-proportionate M-estimate affine projection algorithm (IPMAPA), a linear complexity algorithm which is robust against impulsive interference and exploits channel sparseness. The superiority of IPMAPA to the normalized sign algorithm (NSA) and the normalized least-mean-square (NLMS) algorithm is demonstrated by processing data transmitted at 9 kbps over a 1.2 km shallow water environment contaminated by snapping shrimp noise.
Keywords :
channel estimation; decision feedback equalisers; impulse noise; least mean squares methods; underwater acoustic communication; wireless channels; CEB DFE; IPMAPA; NLMS algorithm; NSA; SIMO underwater acoustic communication; bit rate 9 kbit/s; channel estimation-based decision feedback equalizer; data processing; distance 1.2 km; improved proportionate M-estimate affine projection algorithm; impulsive interference; impulsive noise; linear complexity algorithm; normalized least mean square algorithm; normalized sign algorithm; shallow water environment; shrimp noise snapping; single input multiple output underwater acoustic communication; Baseband; Channel estimation; Decision feedback equalizers; Feedforward neural networks; Noise; Receivers; Robustness;
Conference_Titel :
Underwater Communications and Networking (UComms), 2014
Conference_Location :
Sestri Levante
DOI :
10.1109/UComms.2014.7017119
