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 non-orthogonal multiple access (NOMA) 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 massive connectivity and 5G networks. OTDOA estimated position updating distributed mode non-orthogonal multiple access Spatial capacity LTE-TDD —Device-to-device (D2D) Location-based overloading
Status : Presented 
Date : 2022-01 
Title : Performance of 5G Multiple Access Schemes 
Authors : Hanwoong Kim, Hyunsoo Kim, and Daesik Hong 
Conference : ICEIC 
Abstract : Next generation wireless networks require massive uplink connections as well as high spectral efficiency. It is well known that, theoretically, it is not possible to achieve the sum capacity of multi-user communications with orthogonal multiple access. To meet the challenging requirements of next generation networks, researchers have explored non-orthogonal and overloaded transmission technologies–known as new radio multiple access (NR-MA) for fifth generation (5G) networks. In this article, we discuss the key features of the promising NRMA schemes for the massive uplink connections. The candidate schemes of NR-MA can be characterized by multiple access signatures (MA-signatures), such as codebook, sequence, and interleaver/scrambler. At the receiver side, advanced multiuser detection (MUD) schemes are employed to extract each user’s data from non-orthogonally superposed data according to MAsignatures. Through link-level simulations, we compare the performances of NR-MA candidates under the same conditions. 
URL : https://ieeexplore.ieee.org/document/9748540 

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List of Articles
No.
Statussort Date
» [ICEIC] Hanwoong Kim, Hyunsoo Kim, and Daesik Hong, "Performance of 5G Multiple Access Schemes" ICEIC 2022 update Presented  2022-01 
3 [ITC-CSCC] Taehyung Kim, Insik Jung, Jehyun Heo, Sooyong Choi, and Daesik Hong, "Carrier Frequency Offset Compensation for OFDM-based Uplink SCMA System," ITC-CSCC 2017 file Presented  2017-07 
2 [IEEE VTC] Kwonjong Lee, Yosub Park, Hano Wang, and Daesik Hong, "Dual Layer Small Cell On/Off Control for Ultra Dense Small Cell Networks ," IEEE VTC Spring 2017 file Presented  2017-06 
1 [IEEE VTC] Beomju Kim, Wonsuk Chung, Sungmook Lim, Sangwook Suh, Jonghyung Kwun, Sooyong Choi, and Daesik Hong, "Uplink NOMA with Multi-Antenna," IEEE VTC Spring 2015 file Presented  2015-05