Title :
Information theoretic performance of cooperative underwater acoustic communications
Author :
Al-Dharrab, Suhail ; Uysal, Murat
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
Cooperative communication is considered as a major enabling technique to meet the demanding performance requirements of future underwater acoustic (UWA) communication systems. In this paper, we investigate the information theoretic performance of a cooperative UWA system to provide insight into the fundamental performance limits imposed by underwater acoustic channels. We first propose an approximate statistical model for the non-stationary ambient noise. The proposed model allows mathematical tractability and is a good fit for most operating frequencies in practical systems. Based on this ambient noise model, we investigate the outage performance of a precoded cooperative multicarrier UWA system with amplify-and-forward (AF) relaying. Our numerical results for cooperative UWA systems demonstrate significant performance gains over point-to-point systems. The impact of several system and environmental parameters on the performance is further demonstrated.
Keywords :
amplify and forward communication; cooperative communication; information theory; noise; statistical analysis; underwater acoustic communication; amplify-and-forward relaying; cooperative underwater acoustic communications; information theoretic performance; mathematical tractability; nonstationary ambient noise; precoded cooperative multicarrier UWA system; statistical model; underwater acoustic channels; Covariance matrix; Fading; Noise; OFDM; Relays; Underwater acoustics; Vectors;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2011 IEEE 22nd International Symposium on
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4577-1346-0
Electronic_ISBN :
pending
DOI :
10.1109/PIMRC.2011.6139766