OFDM Relay Cognitive Radio Multiple Antennas Resource Allocation Full Duplex Spectrum Sensing Synchronization Spectrum Sharing Channel Estimation Interference Cancellation Stochastic Geometry Energy Harvesting Feedback Bi-directional Heterogeneous Networks Equalization HetNet relay networks FBMC Ultra Low Power SC-FDMA TVWS Duplex Reliability CDMA MIMO interference channel capacity in-band full-duplex system interference suppression 5G C-V2V reinforcement learning RSRP weighting and 5G networks. health care 5G mobile communication indoor positioning Vehicle-to-vehicle communication estimated position overlapping Resource sharing Power allocation multi-access edge computing control overhead hybrid Rat-dependent positioning NR positioning smart factory UFMC Handoff Femtocell QAM CoMP power uncertainty - Computation offloading amplify and forward communication Zigbee body area networks resource block management frame structure WVAN inter user interference GFDM mode selection antenna arrays partial overlap LTE-based V2V resource selection maximum likelihood method Communication range Number of training blocks Vehicular communication Uplink SCMA system Dynamic TDD QR Factorization Metaheuristics FS-NOMA cross-link interference user fairness Multi-user Receiver Mode 3 V2X P-NOMA dynamic HetNet spectrum partitioning DQN D-TDD CLI overloading non-orthogonal multiple access (NOMA) OTDOA estimated position updating distributed mode non-orthogonal multiple access Spatial capacity LTE-TDD —Device-to-device (D2D) Location-based massive connectivity
Status : Presented 
Date : 2011-05 
Title : Group-Wise Distributed Space-Time-Frequency Coded OFDM over Asymmetric Frequency-Selective AF Relay Channels 
Authors : Seokwon Lee, Seungyoup Han, Hyungsik Ju, Jemin Lee, and Daesik Hong 
Conference : IEEE VTC 2011 
Abstract : Distributed space-time-frequency coding (DSTFC) is a method to achieve diversity from both multipaths and user cooperations. The DSTFC has been researched by assuming that the multipath profiles of relays are the same (symmetric). However, the symmetric frequency- selective channel is limited in the wireless relay communications. Thus, in this paper, we propose a new DSTFC for relay-based amplify-and-forward (AF) cooperative scheme over the asymmetric frequency selective channels. The proposed scheme is based on the sub-carrier grouping in OFDM transmission. By analyzing pairwise error probability (PEP), diversity order of the proposed DSTFC is derived. In addition, a necessary condition of sub-carrier grouping to achieve the maximum diversity and minimize the decoding complexity is investigated. Simulation results verify that the proposed scheme can achieve the maximum diversity gain for a given asymmetric multipath profile. 
URL : http://ieeexplore.ieee.org/xpl/articleDe...er=6093105 
Download : http://mirinae.yonsei.ac.kr/?module=file...46acff9cf5 

Seokwon Lee; Seungyoup Han; Hyungsik Ju; Jemin Lee; Daesik Hong; , "Group-Wise Distributed Space-Time-Frequency Coded OFDM over Asymmetric Frequency-Selective AF Relay Channels," Vehicular Technology Conference (VTC Fall), 2011 IEEE , vol., no., pp.1-5, 5-8 Sept. 2011
doi: 10.1109/VETECF.2011.6093105
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6093105&isnumber=6092796

Related Publications
  1. International Journals 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
  2. International Journals Jemin Lee, Hano Wang and Daesik Hong, "QoS-guaranteed Transmission Mode Selection for Efficient Resource Utilization in Multi-hop Cellular Networks", IEEE Trans. Wireless Comm., Oct 2008
  3. International Conference Jemin Lee, Hano Wang, Sungmook Lim and Daesik Hong, "A Multi-hop User Admission Algorithm for Fixed Relay Stations with Limited Capabilities in OFDMA Cellular Networks", PIMRC 2007, Sep. 2007
  4. International Conference Myeongsu Han, Sungeun Lee, Junghyun Kim, Seungyoup Han and Daesik Hong, "Cooperative Diversity using Relay-based Sub-band Shifting Method for OFDM Transmission over Partially Jammed Channels", ITC-CSCC, July 2007
  5. International Conference Jemin Lee, Sungsoo Park, Hanho Wang and Daesik Hong, "QoS-guaranteed Transmission Scheme Selection for OFDMA Multi-hop Cellular Networks", ICC 2007, June 2007
  6. International Conference Hyonseok Kim, Hyunkee Min, Hanho Wang, Youngju Kim and Daesik Hong, "Asymmetric Pilot Subcarrier Allocation for OFDMA-Based Regenerative Dual-Hop Links", IEEE VTC, April 2007
  7. International Journals Myeongsu Han, Sungeun Lee, Sangmin Ro, Junghyun Kim, Takki Yu, Seungyoup Han and Daesik Hong, "Cooperative Diversity Performance for OFDM Transmission over Partially Jammed Channels", Int'l Journal of Elec. and Comm., July 2007
List of Articles
No.
Statussort Date
» [IEEE VTC] Seokwon Lee, Seungyoup Han, Hyungsik Ju, Jemin Lee, and Daesik Hong, "Group-Wise Distributed Space-Time-Frequency Coded OFDM over Asymmetric Frequency-Selective AF Relay Channels", IEEE VTC 2011, May 2011 file Presented  2011-05 
8 [IEEE VTC] Byungjoon Park, Hyunsoo Cheon, Changeon Kang and Daesik Hong, "A Simple Preamble for OFDM Timing Offset Estimation", IEEE VTC, Sep. 2002 file Presented  2002-09 
7 [IEEE VTC] Hyusoo Cheon, Byungjoon Park, Changeon Kang and Daesik Hong, "The Performance Impairment due to the Imperfect Channel Information in OFDM-based WLAN", IEEE VTC, May 2002 Presented  2002-05 
6 [IEEE VTC] Jaehee Cho, Cheolwook Yoon, Namshin Cho, Heeyoung Jun, and Dasik Hong , "Optimal weighting for ML decoding of convolution code in COFDM systems", IEEE VTC, May 2001 Presented  2001-05 
5 [IEEE VTC] Gosan Noh, Jemin Lee, Hano Wang, Seungjin You and Daesik Hong, "A New Spectrum Sensing Scheme using Cyclic Prefix for OFDM-Based Cognitive Radio Systems", IEEE VTC, May 2008 file Presented  2008-05 
4 [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 
3 [IEEE VTC] Taehoon Kwon, Hyungjoon Song and Daesik Hong, "Robust Channel Estimation in Multicell OFDM(A) Downlink Systems With Propagation Delay", IEEE VTC 2007, April 2007 file Presented  2007-04 
2 [IEEE VTC] Hyonseok Kim, Hyunkee Min, Hanho Wang, Youngju Kim and Daesik Hong, "Asymmetric Pilot Subcarrier Allocation for OFDMA-Based Regenerative Dual-Hop Links", IEEE VTC, April 2007 file Presented  2007-04 
1 [IEEE VTC] Seungyoup Han, Sungtae Kim, Eunsung Oh and Daesik Hong, "Adaptive Resource Allocation with Rate Proportionality Tracking in OFDMA Systems", IEEE VTC, April 2007 file Presented  2007-04