Constant-rate Space-Time Code Selection Design Using Particle Swarm Optimization

In this paper, a constant-rate space-time code selection technique for multiple input-single output systems has been designed using the particle swarm optimization algorithm, finding channels threshold levels used by this technique. An analytical expression is proposed to be used as objective function, to address the problem of minimizing the bit-error rate. Results show that considerable energy-to-noise gains were obtained when using optimized threshold levels.