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DL Radio Transmission Technologies for WRAN Applications : Adaptive Sub-channel Allocation and Stationary Beamforming Algorithms for OFDMA CR System
JungJu Kim  SangJun Ko  KyungHi Chang
Vol. 31, No. 3, pp. 291-303, Mar. 2006

Downlink Radio Resource Allocation Algorithm for Supporting Heterogeneous Traffic Data in OFDM/SDMA-based Cellular System
Joo Heo  SungHo Park  KyungHi Chang  HeeSoo Lee  JaeYoung Ahn

Vol. 31, No. 3, pp. 254-266, Mar. 2006

Symbol Timing & Carrier Frequency Offset Estimation Method for UWB MB-OFDM System
JungJu Kim  Yupeng Wang  KyungHi Chang
Vol. 31, No. 3, pp. 232-239, Mar. 2006

OFDM/OQAM-IOTA System With Odd/Even Center Preamble Structure
SeungWon Kang  Joo Heo  KyungHi Chang
Vol. 30, No. 12, pp. 1153-1160, Dec. 2005

Sliding Window and Successive Cancellation Channel Estimation Schemes based on Pilot Spread Code in DS - UWB System
Yupeng Wang  JungJu Kim  KyungHi Chang
Vol. 30, No. 10, pp. 949-957, Oct. 2005

The OFDMA/TDD System based on Transmit and Receive Beamforming Utilizing the Preamble for Receive Beamforming
Joo Heo  KyungHi Chang
Vol. 30, No. 9, pp. 749-754, Sep. 2005

An Efficient Synchronization and Cell Searching Method for OFDMA/TDD System
JungJu Kim  JungHo Noh  KyungHi Chang
Vol. 30, No. 9, pp. 714-721, Sep. 2005

Cell Radius & Guard Band Requirements by Mutual Interference Investigation between Satellite Digital Systems using Gap-filler
Insuk Cha  SungHo Park  KyungHi Chang  Heung-Ryeol You
Vol. 30, No. 6, pp. 499-509, Jun. 2005

MIMO MB-OFDM System
Joo Heo  KyungHi Chang
Vol. 29, No. 10, pp. 1177-1188, Oct. 2004

A Synchronization & Cell Searching Technique for OFDM-based Cellular Systems
Kwang-Soon Kim  Sung-Woong Kim  Kyung-Hi Chang  Yong-Soo Cho
Vol. 29, No. 1, pp. 65-76, Jan. 2004

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pISSN : 1226 - 4717
eISSN : 2287 - 3880