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Performance Evaluation of a Cellular OFDM System with Heterogeneous MIMO Users  

Oh Joon (인하대학교 정보통신대학교 통신공학연구실)
Hwang Hyeon chyeol (인하대학교 전자공학과 통신공학연구실)
Lim Jong kyoung (인하대학교 정보통신대학원 통신공학연구실)
Kim Duk kyung (인하대학교 정보통신공학부)
Kwak Kyung sup (인하대학교 정보통신대학원)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.4A, 2005 , pp. 296-303 More about this Journal
Abstract
In this paper, we evaluate system performance and propose signal separation and detection when a user with one antenna shares the co-channel together with a user with two space-time coded antennas. The proposed technique can identify co-channel users by an interference cancellation method and detect the signals by maximum likelihood method. Simulation results show that the shortcoming of the Minimum Mean-Squared Error technique which can be applied two users with the same number of antenna but can not applied for heterogeneous MIMO users with the different number of antennas. Also, we apply the proposed scheme to OFDM system and evaluate the system performance. By simulations, we identify that the performance of the proposed system is the same as that of the existing single antenna users and improves the performance of the two-antenna MIMO users.
Keywords
OFDM; Heterogeneous MIMO system; Channel capacity;
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