An improved particle swarm optimization algorithm for signal detection in spatial modulation system

Abstract:

In order to improve the performance of signal detection algorithms in spatial modulation systems, we propose an intelligent signal detectionalgorithm and its improved algorithm based on particle swarm optimization. Efficient signal detection can be achieved by using particles' intelligent searches. Unnecessary local convergence can be avoided by designing weight coefficients for traditional velocity updating formula to improve its performance. Convergence and complexity are analyzed and simulations with different antenna numbers and modulation schemes are executed. Results show that the improved algorithm excels the particle swarm optimization in bit error rate, convergence and computing complexity, all these make it an appealing detection method for spatial modulation receivers.