Improved Space-Time Coding Scheme over Nakagami Fading Channels

In this paper, the performance of space-time coding scheme is investigated over Nakagami fading channels. In the first part, the performance of super-orthogonal space-time trellis code is presented while the performance of its concatenated version is presented in the second part. The concatenation coding scheme with iterative decoding involves convolutional code as the outer code and super-orthogonal space-time trellis code (SOSTTC) as the inner code. The pairwise error probability (PEP) for the coding schemes were derived and their performances evaluated by computer simulation. Simulation results shows that the diversity order of the coding schemes guaranteed by quasi static fading channel increases by m times in the presence of Nakagami fading with inverse fading parameter m and the coding gain varies with the general Nakagami fading channel.