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 : 2009-09 
Title : Capacity Enhancement of Femto-cell Using Reversed-Pair Frame Structure in OFDMA Systems 
Authors : Hano Wang, Daesik Hong 
Conference : IEEE Conference Vehicular Technology 
Abstract : Demanding on higher data rate in wireless commu-nications, femto-cell has been proposed to implement that witha low cost. The femto-cell can be realized by deploying a femto-base-station connected to the core network via a wired-backhaul. Through the wired-backhaul, a downlink and uplink data packets are delivered to the femto-base-station and the core network,respectively. Although the femto-cell with a low transmission power has a small cell coverage, co-channel interference problem between macro-cell and femto-cell has been an important research issue to deploy the femto-cell in the real world since the femto-cell reuses the macro-cell spectrum.
As a solution to the co-channel interference problem, wepropose a new time-division-duplex (TDD) frame structure called reversed-pair frame (RPF). The RPF consists of two TDD frames with a reversed order of downlink and uplink. Using the RPF and a wired-backhaul-delivered downlink data, capacity enhancement can be achieved through a simple interference mitigation process. We evaluate the performance of the RPF through analyzing the capacity of the two-user case, which is applied to multi-user case. The results show that adopting the RPF in a OFDMA femto-cell systems greatly enhances the uplink capacity of both the macro- cell and the femto-cell, and even downlink capacities of them than using the conventional TDD frame. 
URL : http://ieeexplore.ieee.org/xpl/articleDe...MA+Systems 
Download : http://mirinae.yonsei.ac.kr/?module=file...c891af31c6 
Hano Wang; Daesik Hong; , "Capacity Enhancement Using Reversed-Pair TDD Frame in OFDMA Femto-Cell Systems," Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th , vol., no., pp.1-5, 20-23 Sept. 2009
doi: 10.1109/VETECF.2009.5378847
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5378847&isnumber=5378665
List of Articles
Status Datesort
4 [ITC-CSCC] Kwonjong Lee, Jihaeng Heo, Yosub Park, and Daesik Hong,"A New Dynamic CoMP Based on User Location in Downlink Small Cell Networks", ITC-CSCC, July 2013 file Presented  2013-07 
3 [ICEIC] Dongkyu Kim, Hano Wang, and Daesik Hong, "On the Feasibility of a Overlay Cellular System for Future Military Networks," ICEIC2012, Feb. 2012 file Presented  2012-02 
2 [Other Conf. Papers] Hyungsik Ju, Seokwon Lee, Daesik Hong, Kiyoung Han, Jaeho Jeon, "Non-handover Based Mobility Management in Hierarchically Structured Cellular Networks", CNSR 2010, May 2010 file Presented  2010-05 
» [IEEE VTC] Hano Wang, Daesik Hong, "Capacity Enhancement of Femto-cell Using Reversed-Pair Frame Structure in OFDMA Systems", IEEE VTC, Sep. 2009 file Presented  2009-09