This paper presents a general framework for space-time codes (STCs) that encompasses a number of recently proposed STC schemes as special cases. The STCs considered are block codes that employ arbitrary redundant linear precoding of a given data sequence together with embedded training symbols, if any. The redundancy introduced by the linear precoding imposes structure on the received data that...

blind source separation technique separates mixed signals blindly without any information on the mixing system. in this paper, we have used two evolutionary algorithms, namely, genetic algorithm and particle swarm optimization for blind source separation. in these techniques a novel fitness function that is based on the mutual information and high order statistics is proposed. in order to evalu...

Objective: The present study aimed at investigating the relationship between attachment styles and self-efficacy in blind and non-blind female high school students in Tehran. Methods: The statistical population consisted of all female students studying in grades one or two in Tehran girl’s high schools, in the academic year 2014. The study design was causal-comparative, conducted on 120 ...