Quasi orthogonal space-time block-codes For NAKAGAMI channel

Abstract

Communication is the modus operandi of transitory on information at a distance. As communication technologies gaining new dimensions, design and development of various protocols came into existence in couple of years. As per the current challenges of this term paper, we focused the scope and strength of quasi - orthogonal block codes (QOSTBCs) for NAKAGAMI channels. QOSTBCs are used with 3 time slots and three transmitted symbol using two transmit antennas. We are proposing 2 new QOSTBC code for Nakagami channels of this paper. Information is encoded by space-time block code and the information which is encoded, crack into n streams which are broadcasted by means of n broadcast antennas simultaneously. With the help of Maximum -Likelihood (ML) decoding detection codes can be decoded. So we can achieve better symbol error rate (SER) performance for offering QOSTBCs codes which have two transmit antennas and 3 time slots. The basic observable fact which decides reliable wireless transmission is time varying multipath fading. In this phenomena which make tether less transmission a challenge to compare fiber, coaxial cable, line of sight microwave for even satellite transmission.