Sang-Sik AHN

Cooperative Transmission Scheme Using Transmission Timing Control in LTE Enterprise Femtocell Networks
Seung-Yeon KIM Sang-Sik AHN Seungwan RYU Choong-Ho CHO Hyong-Woo LEE 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/03/01
Vol. E95-B  No. 3  pp. 987-990
Type of Manuscript:  LETTER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
enterprise femtocell, cooperative transmission, transmission timing control, conditional Gaussian distribution, outage probability, 
 Summary | Full Text:PDF
Statistical Model-Based VAD Algorithm with Wavelet Transform
Yoon-Chang LEE Sang-Sik AHN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/06/01
Vol. E89-A  No. 6  pp. 1594-1600
Type of Manuscript:  Special Section PAPER (Special Section on Papers Selected from 2005 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC2005))
Category: 
Keyword: 
voice activity detection, wavelet packet decomposition, multi-band spectral subtraction, adaptive threshold, 
 Summary | Full Text:PDF
An Improved Voice Activity Detection Algorithm Employing Speech Enhancement Preprocessing
Yoon-Chang LEE Sang-Sik AHN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/06/01
Vol. E84-A  No. 6  pp. 1401-1405
Type of Manuscript:  Special Section PAPER (Special Section on Papers Selected from 2000 International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC 2000))
Category: 
Keyword: 
voice activity detection, speech enhancement, maximal ratio combining, 
 Summary | Full Text:PDF