title : | Performance Analysis of an Adaptive-MCM System with Combining AMC and MIMO Schemes |
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authors : | Changwoo Seo, Insik Cho, Jeonghwan Lee, Gilsang Yoon, Sherlie Portugal, Intae Hwang |
this_paper_appears_in : | IEEE ICWIT 2010 |
sponsors : | IEEE Antennas and Propagation Society, Microwave Theory and Techniques Society, Comunications Society |
location : | Hilton Hawaiian Village, Honolulu, Hawaii, USA |
dates : | 2010.08.28 - 2010.09.03 |
on_pages : | |
abstract : | The accelerated increase of the mobile communication users has made indispensable the creation of mobile communication techniques and systems able to provide continuously increasing data rates and reliability. Among the techniques proposed to satisfy those demands we can mention Multiple Input Multiple Output (MIMO) and Adaptive Modulation and Coding (AMC). In a limited frequency resource environment, the MIMO scheme increases the channel capacity by using multiple transmit and receive antennas; thus, providing high quality and transmission rate. MIMO can be divided into two main types: MIMO diversity and MIMO multiplexing. The MIMO diversity scheme has a low data rate compared to MIMO multiplexing; however, unlike layered MIMO, which is a type of MIMO multiplexing, MIMO diversity increases the system reliability despite a low Signal to Noise Ratio (SNR). Therefore, there has been a great interest among the researchers in combining these two MIMO schemes in a single system and take advantage of both, the diversity and the multiplexing gain.As for AMC, its adaptation features makes it a research worthy object, especially if a high data rate is among the expected results. Our proposal consists then, in the combination of MIMO and AMC schemes in one single system: Adaptive-MCM. The optimal selection of coding rate, modulation and MIMO scheme result is an improvement of the data rate and system reliability, enhanced by the addition of pre-coding and antenna subset-selection. |
number : | 22 |
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