Detection of the Number of Transmit Antenna and Modulation Type in MIMO Communication Systems with Space-Time Block Code

عزمی, پائیز; عباسیان فریدونی, جابر

Detection of the Number of Transmit Antenna and Modulation Type in MIMO Communication Systems with Space-Time Block Code

Authors

پائیز عزمی

جابر عباسیان فریدونی

دانشگاه تربیت مدرس

Abstract

In this paper, in order to detect the number of transmitting antenna in MIMO communication systems, it is proposed that the techniques such as AIC & MDL, which have been primarily designed so as to detect the number of Gaussian sources, are applied. Then a hypothesis testing based method for recognizing the type of modulation in MIMO communication systems with block orthogonal codes is suggested; in which in order to reduce the complexity of the traditional methods, simpler likelihood functions for testing hypotheses are applied. Furthermore, because in all modulation scheme detection methods, a proper estimation of channel gain (channel matrix) is required; in this paper, a new and efficient method based on SAGE iterative algorithm for estimation of channel matrix in MIMO communication system with space-time block codes is proposed. At the end of this paper, the performance and effectiveness of all proposed modules are separately and jointly analyzed by numerical simulations.

Keywords

Detection of The Number of Transmit Antenna

Modulation Recognition

MIMO Systems

Orthogonal Space-Time Block Codes

Channel Matrix Estimation

SAGE Algorithm