AU - عزمی, پائیز AU - عباسیان فریدونی, جابر TI - Detection of the Number of Transmit Antenna and Modulation Type in MIMO Communication Systems with Space-Time Block Code PT - JOURNAL ARTICLE TA - mdrsjrns JN - mdrsjrns VO - 9 VI - 1 IP - 1 4099 - http://mjee.modares.ac.ir/article-17-4478-en.html 4100 - http://mjee.modares.ac.ir/article-17-4478-en.pdf SO - mdrsjrns 1 AB  - 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. CP - IRAN IN - تهران LG - eng PB - mdrsjrns PG - 57 PT - YR - 2009