1. Gheorghe Asachi Technical University of Iasi,Faculty of Automatic Control and Computer Engineering,Iasi,Romania
2. Northumbria University,Optical Communications Research Group, Dep. of Physics and Electrical Eng.,Newcastle upon Tyne,United Kingdom
3. DSP Centre of Excellence, Bangor University,Bangor,United Kingdom
4. Northumbria University,Optical Communications Research Group,Newcastle upon Tyne,United Kingdom