title : | Improvement of the Throughput-SNR Trade-off using a 4G Adaptive MCM system |
---|---|
authors : | Insik Cho, Changwoo Seo, Gilsang Yoon, Jeonghwan Lee, 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 improvement of the data throughput performance is one of the hot issues regarding the next generation of mobile communication systems. In order to fulfill the need of an ultra-high speed service, several techniques have been in progress, such as AMC, Orthogonal Frequency Division Multiplexing (OFDM), Multiple Input Multiple Antenna (MIMO) and so on. Among these techniques, MIMO and OFDM schemes are key techniques for the next generation mobile communication systems.After analyzing and comparing several MIMO and OFDM schemes, we selected OFDM STBC 4x2 and OFDM Layered 4x2 as the ideal systems to perform our simulations. In order to get the optimal throughput performance, we also added pre-coding and Antenna Subset Selection to the selected systems; then, we combined them with the Adaptive-MCM scheme to create a system where the modulation scheme, the channel coding rate, and also the MIMO scheme change adaptively, according to the channel conditions. Finally, we analyze the performance of the Adaptive-MCM system, which aims to improve the throughput-SNR trade-off in 4G systems. |
number : | 21 |
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