OFDM Relay Cognitive Radio Multiple Antennas Resource Allocation Full Duplex Spectrum Sensing Synchronization Spectrum Sharing Interference Cancellation Channel Estimation Feedback Heterogeneous Networks Energy Harvesting Stochastic Geometry Bi-directional Equalization relay networks FBMC HetNet CDMA channel capacity SC-FDMA interference MIMO Ultra Low Power Duplex TVWS CLI in-band full-duplex system D-TDD interference suppression Reliability 5G C-V2V indoor positioning reinforcement learning RSRP weighting User grouping Rat-dependent positioning Communication range multi-access edge computing hybrid - Computation offloading —Device-to-device (D2D) estimated position updating control overhead resource block management estimated position overlapping Femtocell NR positioning frame structure Zigbee body area networks channel estimation error Handoff CoMP packet delay power uncertainty ultra-dense small cell network GFDM antenna arrays 5G mobile communication UFMC WVAN mode selection inter user interference health care Vehicular communication cross-link interference resource selection FS-NOMA Dynamic TDD Number of training blocks Mode 3 Uplink SCMA system Multi-user Receiver LTE-TDD user fairness smart factory V2X Metaheuristics Location-based QR Factorization partial overlap P-NOMA dynamic HetNet spectrum partitioning Cell-free and 5G networks. overloading massive connectivity DQN mMIMO distributed mode non-orthogonal multiple access OTDOA maximum likelihood method Resource sharing Power allocation non-orthogonal multiple access (NOMA)
Status : Presented 
Date : 2011-07 
Title : Rate Improvement of Beamforming Systems via Bi-Directional Use of Spatial Resources 
Authors : Hyungsik Ju, Xiaohu Shang, H. Vincent Poor, and Daesik Hong 
Conference : GLOBECOM 2011 
Abstract : This paper considers an increase in the achievable rate of beamforming systems in two-way communication, resulting from bi-directional use of the spatial resources. The concept of bidirectional use of the spatial resources is first introduced. Then, a condition is derived under which bi-directional beamforming (BB) has larger achievable rate than that of conventional beamforming operating via frequency division duplexing (UB-FDD). In addition, the variation in the achievable rate of bi-directional beamforming is investigated when echo interference is pre-cancelled in the air. Simulation results show that the achievable rate of BB is always larger when the echo is ideally eliminated, and is larger over a certain level of SNR and below a certain level of fading correlation than that of UB-FDD. 
URL : http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6133737 
Download : http://mirinae.yonsei.ac.kr/?module=file...249b10caa8 

Hyungsik Ju; Xiaohu Shang; Poor, H.V.; Daesik Hong; , "Rate Improvement of Beamforming Systems via Bi-Directional Use of Spatial Resources," Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE , vol., no., pp.1-5, 5-9 Dec. 2011
doi: 10.1109/GLOCOM.2011.6133737
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6133737&isnumber=6133457

List of Articles
No.
Status Datesort
4 [Other Conf. Papers] Dongkyu Kim, Hyungsik Ju, Seokjung Kim, and Daesik Hong, "Transmit Antenna-switched Receive Diversity for Bi-directional Beamforming in Two-way Communications," in IEEE ASILOMAR2013, Nov. 2013 file Presented  2013-11 
3 [ICEIC] Jihaeng Heo, Hyungsik Ju, Sungsoo Park, and Daesik Hong, "Method for Simultaneous Sensing and Data Transmission in CR Environments," ICEIC2013, Jan. 2013 file Presented  2013-01 
2 [ITC-CSCC] Dongkyu Kim, Hyungsik Ju and Daesik Hong, "Transmission Capacity of Bi-directional Beamforming in Two-way Ad-hoc Networks", ITC-CSCC, July 2012 file Presented  2012-07 
» [IEEE GLOBECOM] Hyungsik Ju, Xiaohu Shang, H. Vincent Poor, and Daesik Hong, "Rate Improvement of Beamforming Systems via Bi-Directional Use of Spatial Resources", GLOBECOM 2011, July 2011 file Presented  2011-07