OFDM Multiple Antennas Cognitive Radio Relay CDMA Synchronization Channel Estimation Spectrum Sharing Interference Cancellation Resource Allocation Spectrum Sensing Neural Networks Full duplex Stochastic Geometry Equalizer Bi-Directional Feedback Energy Harvesting Heterogeneous Networks Femtocell Device-to-Device (D2D) Idle cells Cross-link interference FBMC Spectral efficiency Cell Search SINR mismatch problem NOMA Ultra-dense small cell networks HetNet interference management Dynamic TDD outage probability selection diversity achievable sum rate bursty traffic model Cognitive relay networks mode selection multi-spectral 5G Complexity Singular Vale Decomposition OQAM tabu-search Filtered OFDM TDD configuration flexible duplex Handoff GFDM Heterogeneous channel estimation capability self-interference cancellation in-band full-duplex system Channel estimation error coexistence CP-OFDM MU-MIMO automatic repeat request (ARQ) Two-way communications UWB full-duplex relay full-duplex cellular Simultaneous Sensing and Transmission Correlated MIMO transmission capacity (TC) sensing duration Bi-directional full-duplex Vehicle-to-Vehicle prototype filter pilot signal Coexistence scenarios resource size control Vehicle-to-vehicle communication link reliability interference to noise ratio eigen decomposition TS-W-OFDM Resource management Cooperative systems LTE-based V2V Aggregate interference time-frequency efficiency mixed numerology Windowing Reliability C-V2V Asynchronous Transmission Full-duplex Computation offloading Grant-free Transmission Preamble full-spreading NOMA massive connectivity Edge computing Multiple access MLP Deep learning Railway Mobility interference mitigation HST non-orthogonal multiple access
Status : Published 
Date : 2010-02 
Title : The Role of Phase Compensation in Preventing Channel Dispersion in Variable Gain Relay OFDM Systems 
Authors : Kyungchul Kwak, Sungeun Lee, and Daesik Hong 
Journal : IEEE Transactions on Vehicular Technology 
Abstract : We show that the length of a composite channel is regarded up to the whole symbol duration for variable-gain relay (VGR), which generates the received power constant instantaneously. The enlarged channel length causes system burden, which is due to long-channel estimation, i.e., an increase in pilot overhead, a decrease in bandwidth efficiency, and a degradation of system performance. To prevent this effect and minimize the length of the composite channel, phase compensation of the source-relay (S-R) link channel should be added to the VGR, although this addition increases complexity. A system that adopts VGR with phase compensation performs better and has higher bandwidth efficiency. 
URL : http://ieeexplore.ieee.org/xpls/abs_all....er=5415853 
Download : http://mirinae.yonsei.ac.kr/?module=file...fe200a26f9 

Kyungchul Kwak; Sungeun Lee; Daesik Hong; , "The Role of Phase Compensation in Preventing Channel Dispersion in Variable-Gain Relay OFDM Systems," Vehicular Technology, IEEE Transactions on , vol.59, no.2, pp.1005-1011, Feb. 2010
doi: 10.1109/TVT.2009.2035045
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5415853&isnumber=5415848

List of Articles
No.
Statussort Date
8 [IEEE Trans. Veh. Technol.] Seongwoo Ahn, Hano Wang, and Daesik Hong , "Throughput–Delay Tradeoff of Proportional Fair Scheduling in OFDMA Systems" IEEE Trans. Veh. Technol., Nov. 2011 file Published  2011-11 
» [IEEE Trans. Veh. Technol.] Kyungchul Kwak, Sungeun Lee, and Daesik Hong, "The Role of Phase Compensation in Preventing Channel Dispersion in Variable Gain Relay OFDM Systems," IEEE Trans. Veh. Technol., Feb 2010 file Published  2010-02 
6 [IEEE Trans. Veh. Technol.] Choongchae Woo, Eunsung Oh, Seungyoup Han and Daesik Hong, "Simple Dynamic Subcarrier Allocation with CQI Feedback Reduction for OFDMA Systems", IEEE Trans. Veh. Technol., Sep 2008 Published  2008-09 
5 [IEEE Trans. Veh. Technol.] Eunsung Oh, Myeongyun Cho, Seungyoup Han, Choongchae Woo and Daesik Hong, "Performance Analysis of Reuse Partitioning-Based Subchannelized OFDMA Uplink Systems", IEEE Trans. Veh. Technol., Jul 2008 Published  2008-07 
4 [IEEE Trans. Veh. Technol.] Hyungjoon Song, Jihyung Kim and Daesik Hong, "Joint Doppler-Frequency Diversity for OFDM Systems Using Hybrid Interference Cancellation", IEEE Trans. Veh. Technol., Jan 2008 Published  2008-01 
3 [IEEE Trans. Veh. Technol.] Myeongsu Han, Takki Yu, Jihyung Kim, Kyungchul Kwak, Sungeun Lee, Seungyoup Han and Daesik Hong, "OFDM Channel Estimation with Jammed Pilot Detector under Narrow-Band Jamming", IEEE Trans. Veh. Technol., May 2008 file Published  2008-05 
2 [IEEE Trans. Veh. Technol.] Junghoon Lee, Sungeun Lee, Keukjoon Bang, Sungkeun Cha and Daesik Hong, "Carrier Frequency Offset Estimation Using ESPRIT for Interleaved OFDMA Uplink Systems", IEEE Trans. Veh. Technol., Sep 2007 Published  2007-09 
1 [IEEE Trans. Veh. Technol.] Eunseok Ko and Daesik Hong, "A Robust STBC-Based Transmit Diversity Scheme for OFDM Systems Over Spatially Transmit Correlated Fading Channels", IEEE Trans. Veh. Technol., Mar 2007 Published  2007-03