Throughput Performance Analysis of AMC Based on a New SNR Estimation Algorithm Using Preamble

The rapid growth in mobile communication users necessitates the development of reliable communication systems that provide higher data rates. Tomeet these requirements, techniques such as multiple input multiple output (MIMO) and orthogonal frequency division multiplexing (OFDM) have been developed in recent years. Current research activity is focused on developing MIMO-OFDM systems that combine the benefits of both techniques. In addition, for a fast wireless channel environment, the data rate and reliability can be optimized by setting the modulation and coding adaptively according to the channel conditions, as well as by using sub-carrier frequency and power allocation techniques. The overall system performance depends on how accurately the feedback-based system obtains the channel state information and feeds it back to the transmitter without delay. In this paper, we propose C. Seo · S. Portugal · S. Malik · T. Jung · I. Hwang (B) Department of Electronics and Computer Engineering, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea e-mail: [email protected] C. Seo e-mail: [email protected] S. Portugal e-mail: [email protected] S. Malik e-mail: [email protected] T. Jung e-mail: [email protected] C. You Department of Information and Communications Engineering, Myongji University, San 38-2 Namdong, Cheoingu, Yongin, Gyonggi-Do 449-728, Republic of Korea e-mail: [email protected] H. Liu School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR 97331-3211, USA e-mail: [email protected] 123 Author's personal copy