OFDM Relay Cognitive Radio Multiple Antennas Resource Allocation Full Duplex Spectrum Sensing Synchronization Spectrum Sharing Interference Cancellation Channel Estimation Feedback Heterogeneous Networks Bi-directional Energy Harvesting Stochastic Geometry HetNet relay networks FBMC Equalization channel capacity TVWS CDMA interference in-band full-duplex system Duplex MIMO Ultra Low Power C-V2V 5G Reliability SC-FDMA interference suppression D-TDD CLI indoor positioning reinforcement learning RSRP weighting - Computation offloading smart factory Cell-free multi-access edge computing estimated position overlapping —Device-to-device (D2D) estimated position updating mMIMO control overhead hybrid NR positioning Femtocell Rat-dependent positioning frame structure Zigbee body area networks channel estimation error Handoff CoMP User grouping power uncertainty ultra-dense small cell network mode selection antenna arrays 5G mobile communication UFMC resource block management inter user interference WVAN health care partial overlap GFDM Dynamic TDD Multi-user Receiver Number of training blocks Uplink SCMA system V2X Vehicular communication cross-link interference LTE-TDD FS-NOMA Location-based user fairness Mode 3 QR Factorization Metaheuristics P-NOMA non-orthogonal multiple access dynamic HetNet spectrum partitioning and 5G networks. massive connectivity non-orthogonal multiple access (NOMA) overloading DQN OTDOA distributed mode Communication range resource selection maximum likelihood method Resource sharing Power allocation packet delay
Status : Presented 
Date : 2007-09 
Title : A CQI Feedback Reduction Scheme for Multi-User MIMO/OFDMA Systems 
Authors : Myeongyun Cho, Youngju Kim, Jaekon Lee and Daesik Hong 
Conference : IEEE International Symposium on Personal, Indoor and Mobile Radio Communications 
Abstract : An opportunistic scheduling is adopted to improve the capacity of the system by exploiting the multiuser diversity of multiuser MIMO (MU-MIMO) systems. However, it requires a large amount of feedback carrying the channel quality information (CQI) of each user to the transmitter. The considered Per User Unitary and Rate Control (PU2RC) needs to feedback the preferred precoding index and its CQIs, and it has a defect in scheduling the streams for the grouped user. In order to overcome these drawbacks, a novel feedback reduction scheme is proposed and is modified for OFDMA systems in this paper. It employs transmitter controlled precoding and opportunistic feedback (TCP-OFB) in conjunction with frequency scheduling. The simulation results demonstrate that TCP-OFB/OFDMA shows comparable performance to PU2RC while it only requires far reduced feedback load. 
URL : http://ieeexplore.ieee.org/xpl/articleDe...MA+Systems 
List of Articles
No.
Statussort Date
4 [IEEE CNCC] Woohyun Seo, Sungsoo Park, Dongyoung Kwon, and Daesik Hong, "User Restriction Scheme for Feedback Reduction of Unitary Matrix Based SDMA", IEEE CCNC, Jan. 2010 file Presented  2010-01 
3 [IEEE TENCON] Hano Wang, Dongkyu Kim, Gosan Noh, and Daesik Hong, "Throughput Maximization of SINR-based Spectrum Sharing Policy", IEEE TENCON, Nov. 2009 file Presented  2009-11 
2 [IEEE VTC] Hyunsoo Cheon, Byungjoon Park and Daesik Hong, "Adaptive Multicarrier System  with Reduced Feedback Information in Wideband Radio Channels", IEEE VTC, Sept. 1999 Presented  1999-09 
» [IEEE PIMRC] Myeongyun Cho, Youngju Kim, Jaekon Lee and Daesik Hong, "A CQI Feedback Reduction Scheme for Multi-User MIMO/OFDMA Systems", PIMRC 2007, Sep. 2007 Presented  2007-09