Mohammad Dehghani Soltani - Amirkabir University of Technology, Tehran, Iran.
Hassan Aghaeinia - Amirkabir University of Technology, Tehran, Iran
Alireza Morsali - Shahid Bahonar University, Kerman, Iran.

In this paper we propose a simple method to compute achievable information rate for MIMO systems. This has beenobtained from conversion of MIMO system into independent channels. Our scheme uses singular value decomposition SVD to botain which is the tank of channel ,atrix separated channels.Finally, total rate will be the sum ofachievable rate in all separated channels. We will show information rate that has been computed in this way is equal torate of initial MIMO system. Then we will investigate effect of increasing transmit antennas on the achievable ratefrom view of distribution of inputs in this new converted model. We back our results by simulation which shows indespite of simplicity of our method, it works the same way as the others.

achievable information rate, MIMO, singular value decomposition (SVD)