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Implementation of multiuser detection strategies for coherent underwater acoustic communication

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4 Author(s)
Hong Kwang Yeo ; Dept. of Electr. & Electron. Eng., Univ. of Newcastle, Newcastle upon Tyne, UK ; B. S. Sharif ; A. E. Adams ; O. R. Hinton

This paper presents multiple access interference cancellation techniques based on joint implementation of spatial-beamforming and multiuser detection strategies for coherent underwater acoustic communication network. Performances of adaptive multiuser detection strategies based on weighted parallel, successive, and recursive successive interference cancellation techniques are compared using experimental sea-trial data. Results show that the receiver structure adopting weighted recursive successive interference cancellation (RSIC) exhibits robustness in extracting useful data for weak users in the presence of co-channel interference from strong users. In addition, this type of structure simultaneously suppresses the summed interference effects contributed by weaker users toward the strongest user. The RSIC structure is therefore a potential candidate for multiple access interference suppression in coherent shallow water acoustic communication systems

Published in:

IEEE Journal of Oceanic Engineering  (Volume:27 ,  Issue: 1 )