Kyung-Ik Cho
Samsung
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Publication
Featured researches published by Kyung-Ik Cho.
consumer communications and networking conference | 2013
Tae-young Lee; Myoung-Hwan Lee; Jae-Eun Kang; Kyung-Ik Cho; Chil-youl Yang; Scott Seongwook Lee
The dynamic change of wireless channel condition causes poor Wi-Fi quality of service. To cope with the channel variation of wireless communication, the essential strategy for the physical layer with multi-rate capability is the link adaptation. However, because definite guidelines for rate changes do not exist, most link adaptation algorithms can misleadingly increase transmission rates. Therefore, we propose a cognitive link adaptation scheme, sensing link adaptation urgency and responding with differentiated rate control such as the long-term rate adaptation with a short-term rate drop. To evaluate the proposed scheme, we implement the link adaptation scheme on Wi-Fi System-on-Chip, applying the optimal HW/SW partitioning technique to reduce the SW processing delay from heavy operating calculation for the algorithm. The experiment shows that the proposed algorithm increases the packet arrival rate in a real Wi-Fi environment by reducing transmission failure due to wrong rate changes.
Archive | 2010
Chang-yeul Hyundai I'Park cha Ap Kwon; Chil-youl Prugio Apt. Yang; Kyung-Ik Cho; Se-Young Shin
Archive | 2005
Jin-Woo Hong; Dae-gyu Bae; Hyun-Ah Sung; Se-Young Shin; Chang-yeul Kwon; Kyung-Ik Cho
Archive | 2004
Ho Jin; Seong-Hee Lee; Kyung-Ik Cho
Archive | 2006
Kyung-Ik Cho
Archive | 2007
Ho Jin; Kyung-Ik Cho
Archive | 2004
Seung-seop Shim; Kyung-Ik Cho; Suk-jin Yun; Se-Young Shin
Archive | 2004
Se-Young Shin; Kyung-Ik Cho; Seung-seop Shim; Suk-jin Yun
Archive | 2009
Suk-jin Yun; Chang-yeul Kwon; Seong-Wook Lee; Chil-youl Yang; Kyung-Ik Cho
Archive | 2007
Kyung-Ik Cho; Seong-sin Joo