Comparative study of cooperative transmission techniques in multipath rician fading environments. - Eleftherios Koxias; Stylianos Papaharalabos; Asimina Michalopoulou; Fotis I. Lazarakis; Antonis Alexandridis 001; Kostas Dangakis; Panayotis G. Cottis (Panhellenic Conference on Informatics, 2015)