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Chang Wook Ahn
Researcher at Gwangju Institute of Science and Technology
Publications - 206
Citations - 8400
Chang Wook Ahn is an academic researcher from Gwangju Institute of Science and Technology. The author has contributed to research in topics: Digital watermarking & Evolutionary algorithm. The author has an hindex of 31, co-authored 203 publications receiving 7538 citations. Previous affiliations of Chang Wook Ahn include Sungkyunkwan University & Korea University.
Papers
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Journal Article
Spatial Modulation
TL;DR: An analytical approach for symbol error ratio (SER) analysis of the SM algorithm in independent identically distributed Rayleigh channels results closely match and it is shown that SM achieves better performance in all studied channel conditions, as compared with other techniques.
Proceedings ArticleDOI
On the practical genetic algorithms
TL;DR: Practical design-guidelines for developing efficient genetic algorithms to successfully solve real-world problems are offered and a practical population-sizing model is presented and verified.
Journal ArticleDOI
A genetic algorithm for shortest path routing problem and the sizing of populations
Chang Wook Ahn,R. S. Ramakrishna +1 more
TL;DR: A population-sizing equation based on the gambler ruin model that can be used for determining an adequate population size in the shortest path (SP) routing problem and exhibits a much better quality of solution and a much higher rate of convergence than other algorithms.
Proceedings ArticleDOI
Spatial Modulation - A New Low Complexity Spectral Efficiency Enhancing Technique
TL;DR: A new transmission approach, called spatial modulation, is presented that entirely avoids ICI and requires no synchronization between the transmitting antennas while maintaining high spectral efficiency and results in a vast reduction in receiver complexity.