Keum-Chan WHANG

22 OSIC Receiver for Hierarchical Constellation
Deok-Kyu HWANG Sooyong CHOI Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/09/01
Vol. E93-B  No. 9  pp. 2458-2461
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
OSIC, hierarchical constellation, MIMO, QR-decomposition, 
 Summary | Full Text:PDF
A Partial IR Hybrid ARQ Scheme Using Rate-Compatible Punctured LDPC Codes in an HSDPA System
Chang-Rae JEONG Hyo-Yol PARK Kwang-Soon KIM Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/02/01
Vol. E92-B  No. 2  pp. 604-607
Type of Manuscript:  LETTER
Category: Fundamental Theories for Communications
Keyword: 
low-density parity check codes, hybrid ARQ, partial IR, turbo codes, HSDPA, 
 Summary | Full Text:PDF
Blind Carrier Frequency Synchronization for the Uplink of Interleaved OFDMA Systems
Jong Yoon HWANG Kwang Soon KIM Yong-Seok KIM Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/01/01
Vol. E91-B  No. 1  pp. 368-371
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
OFDMA, blind synchronization, CFO, 
 Summary | Full Text:PDF
Joint Optimization of Power Allocation and Detection Ordering for Closed-Loop OSIC System
Deok-Kyu HWANG Seung-Hoon HWANG Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/12/01
Vol. E90-B  No. 12  pp. 3606-3611
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
MIMO, V-BLAST, power allocation, ordering, QR decomposition, 
 Summary | Full Text:PDF
A Novel Frequency Offset Estimation for OFDM Systems
Jong Yoon HWANG Kwang Soon KIM Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/11/01
Vol. E89-B  No. 11  pp. 3132-3135
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
blind synchronization, frequency offset estimation, orthogonal frequency division multiplexing (OFDM), 
 Summary | Full Text:PDF
New Stopping Criterion of Turbo Decoding for Turbo Processing
Dong-Kyoon CHO Byeong-Gwon KANG Yong-Seo PARK Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/01/01
Vol. E87-B  No. 1  pp. 161-164
Type of Manuscript:  LETTER
Category: Fundamental Theories
Keyword: 
turbo codes, stopping criteria, MIMO, 
 Summary | Full Text:PDF
Enhanced Packet Access Scheme for IMT-2000/UMTS Random Access Channel
Young-Sam KIM Jun-Kui AHN Kyoo-Jin HAN Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/12/01
Vol. E85-B  No. 12  pp. 2946-2949
Type of Manuscript:  LETTER
Category: Wireless Communication Technology
Keyword: 
IMT-2000/UMTS, RACH, packet access scheme, interference characteristics, 
 Summary | Full Text:PDF
Performance of Parallel Interference Cancellation with Reverse-Link Synchronous Transmission Technique for DS-CDMA System in Multipath Fading Channels
Woong SUN Seung-Hoon HWANG Duk Kyung KIM Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/08/01
Vol. E85-B  No. 8  pp. 1622-1626
Type of Manuscript:  LETTER
Category: Wireless Communication Technology
Keyword: 
reverse-link synchronous transmission technique, parallel interference cancellation, DS-CDMA, 
 Summary | Full Text:PDF
A Channel Estimation Algorithm for Mobile Communication Systems in a Fading Environment
Kyoo-Jin HAN Een-Kee HONG Sang-Tae KIM Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/03/01
Vol. E85-B  No. 3  pp. 682-685
Type of Manuscript:  LETTER
Category: Terrestrial Radio Communications
Keyword: 
maximum Doppler frequency, phase variations, BPSK modulated signals, 
 Summary | Full Text:PDF
Throughput Analysis of 1/N-Slotted DS-CDMA Packet Radio Networks Using a Slot-Averaged SIR Model
Jun-Kui AHN Een-Kee HONG Tae-Joong KIM Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/04/01
Vol. E84-B  No. 4  pp. 952-959
Type of Manuscript:  PAPER
Category: Wireless Communication Technology
Keyword: 
packet radio network, network throughput, CDMA, slotted ALOHA, CLSP, CLSP/CC, 
 Summary | Full Text:PDF
Performance Analysis of Mobile Satellite Noncoherent DS-CDMA Systems with Orthogonal Signals
Yong-Hoon CHO Jun-Kui AHN Een-Kee HONG Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 623-633
Type of Manuscript:  PAPER
Category: Satellite and Space Communications
Keyword: 
noncoherent DS-CDMA, mobile satellite communications, QS-DBPSK, M-ary orthogonal signaling, 
 Summary | Full Text:PDF
Adaptive CDMA Scheme as a Rain Fade Countermeasure in Ka-Band Geosynchronous Satellite Communications
Dong-Hee KIM Seung-Hoon HWANG Ui-Young PAK Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/12/25
Vol. E83-B  No. 12  pp. 2600-2606
Type of Manuscript:  PAPER
Category: Satellite and Space Communications
Keyword: 
Ka-band, CDMA, rain fade, satellite communications, 
 Summary | Full Text:PDF
Rapid Converging Adaptive Receiver in DS-CDMA Systems
Hee-Bong PARK Seung-Hoon HWANG Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/09/25
Vol. E83-B  No. 9  pp. 2138-2140
Type of Manuscript:  LETTER
Category: Wireless Communication Technology
Keyword: 
DS-CDMA systems, adaptive receiver, LMS algorithm, 
 Summary | Full Text:PDF
Power Control and Macrodiversity as Fade Countermeasures in Satellite CDMA Transmission at Ka-Band
Seung-Hoon HWANG Dong-Hee KIM Soo-In LEE Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/11/25
Vol. E82-B  No. 11  pp. 1878-1882
Type of Manuscript:  LETTER
Category: Satellite Communication
Keyword: 
power control, macrodiversity, fade countermeasures, satellite CDMA transmission, Ka-band, 
 Summary | Full Text:PDF
Turbo Coded CDMA System with an Interference Cancellation Technique
Hyuck-Chan KWON Ki-Jun KIM Byeong-Hoon PARK Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/12/25
Vol. E81-B  No. 12  pp. 2326-2333
Type of Manuscript:  Special Section PAPER (Special Issue on the Latest Development of Telecommunication Research)
Category: Wireless Communication Systems
Keyword: 
turbo codes, interference cancellation, CDMA, 
 Summary | Full Text:PDF
Effect of Delay Spread on Multi-Bandwidth CDMA System with Multiple Order Selection Combining
Soon-Yil KWON Een-Kee HONG Ki-Jun KIM Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/11/25
Vol. E81-A  No. 11  pp. 2418-2425
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
multi-bandwidth CDMA, rake receiver, selection combining, delay spread, 
 Summary | Full Text:PDF
The Effects of Rain Attenuation in a Quasi-Synchronous CDMA Return Link for a Ka-Band Satellite Communication System
Seung-Hoon HWANG Jae-Young AHN Tae-Joong KIM Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/07/25
Vol. E81-A  No. 7  pp. 1436-1444
Type of Manuscript:  Special Section PAPER (Special Section on Fundamentals of Multi-dimensional Mobile Information Network)
Category: 
Keyword: 
quasi-synchronous CDMA return link, Ka-band satellite communication system, rain attenuation, transponder nonlinearity, 
 Summary | Full Text:PDF
On Performance Improvements of Spread Slotted ALOHA Network with CLSP/CC
Tae-Joong KIM Ki-Jun KIM Seung-Hoon HWANG Keum-Chan WHANG 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/12/25
Vol. E80-A  No. 12  pp. 2493-2499
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
spread slotted ALOHA, CLSP, CLSP/CC, network throughput, 
 Summary | Full Text:PDF