@conference { ISI:000387181100066, title = {New Greedy Forwarding Strategy for UWSNs Geographic Routing Protocols}, booktitle = {2016 INTERNATIONAL WIRELESS COMMUNICATIONS AND MOBILE COMPUTING CONFERENCE (IWCMC)}, series = {International Wireless Communications and Mobile Computing Conference}, year = {2016}, note = {12th International Wireless Communications \& Mobile Computing Conference (IWCMC), Paphos, CYPRUS, SEP 05-09, 2016}, pages = {388-393}, publisher = {IEEE; IEEE Cyprus Sect; Frederick Univ}, organization = {IEEE; IEEE Cyprus Sect; Frederick Univ}, abstract = {Recently Underwater wireless Sensor Networks (UWSNs) have been suggested as a powerful technology for many civilian and military applications, such that tactical surveillance. Geographic routing that uses the position information of nodes to route the packet toward a destination is preferable for UWSNs. In this paper, we propose a New Greedy Forwarding (NGF) strategy using splitting mechanism based on Chinese remainder theorem(CRT) for UWSNs. In the approach, source node reduced the number of bits transmitted using the proposed splitting mechanism based on CRT if there are more than two nodes participate in the forwarding of one packet. This strategy distribute the forwarding task between more nodes instead of selecting one node as next-hop, that reduce the energy consumption per node and maintain node communication for a long time. Thus resulting the increase of network life time and decrease the number of isolated/void nodes. We use topology control through depth adjustment to cope with the problem of isolated and void nodes appeared in geographic routing protocols. Simulation results shows that with the anycast greedy forwarding strategy the network life time is about 500 rounds whereas it is about 1000 rounds using the new greedy forwarding strategy, which means the new strategy increase the network life time and increase the network performance in energy saving.}, isbn = {978-1-5090-0304-4}, issn = {2376-6492}, author = {Jouhari, Mohammed and Ibrahimi, Khalil and Benattou, Mohammed and Kobbane, Abdellatif} } @conference { ISI:000380408200016, title = {Performance analysis of coding using Distributed Turbo Codes}, booktitle = {2015 THIRD INTERNATIONAL WORKSHOP ON RFID AND ADAPTIVE WIRELESS SENSOR NETWORKS (RAWSN)}, year = {2015}, note = {3rd International Workshop on RFID and Adaptive Wireless Sensor Networks (RAWSN), Agadir, MOROCCO, MAY 13-15, 2015}, pages = {78-81}, publisher = {FST FES; IEEE Morocco Sect; CNRST; MobiTic; Laboratoire Signaux Systemes Composants; LiMs Laboratoire}, organization = {FST FES; IEEE Morocco Sect; CNRST; MobiTic; Laboratoire Signaux Systemes Composants; LiMs Laboratoire}, abstract = {Nowadays the need for fast and reliable communication is increasing, which leads us to look for new ways to enhance channel coding. In this paper, we will study the case of a distributed coding between two users that aim to transmit data to a common destination, where each user transmits a partial redundancy to the destination, and relies on the second user for the remaining. The purpose of distributing the redundancy creation and transmission, is to benefit from each user channel quality for a more accurate decoding. In the context of our analysis, we will use a 1/2 rate convolutional code with between users and a distributed Turbo code for transmission to the destination. However, this study will aim to highlight the different key factors, as well as the advantage of choosing a distributed encoding.}, isbn = {978-1-4673-8096-6}, author = {Aboudeine, Anas and Ayoub, Fouad and Yatribi, Anouar and Benattou, Mohammed}, editor = {Berrada, I and Ghennioui, H} }