OFDM Multiple Antennas Cognitive Radio Relay CDMA Synchronization Channel Estimation Spectrum Sharing Interference Cancellation Resource Allocation Spectrum Sensing Neural Networks Full duplex Stochastic Geometry Equalizer Bi-Directional Feedback Energy Harvesting Heterogeneous Networks Femtocell Device-to-Device (D2D) Idle cells Cross-link interference FBMC Spectral efficiency Cell Search SINR mismatch problem NOMA Ultra-dense small cell networks HetNet interference management Dynamic TDD outage probability selection diversity achievable sum rate bursty traffic model Cognitive relay networks mode selection multi-spectral 5G Complexity Singular Vale Decomposition OQAM tabu-search Filtered OFDM TDD configuration flexible duplex Handoff GFDM Heterogeneous channel estimation capability self-interference cancellation in-band full-duplex system Channel estimation error coexistence CP-OFDM MU-MIMO automatic repeat request (ARQ) Two-way communications UWB full-duplex relay full-duplex cellular Simultaneous Sensing and Transmission Correlated MIMO transmission capacity (TC) sensing duration Bi-directional full-duplex Vehicle-to-Vehicle prototype filter pilot signal Coexistence scenarios resource size control Vehicle-to-vehicle communication link reliability interference to noise ratio eigen decomposition TS-W-OFDM Resource management Cooperative systems LTE-based V2V Aggregate interference time-frequency efficiency mixed numerology Windowing Reliability C-V2V Asynchronous Transmission Full-duplex Computation offloading Grant-free Transmission Preamble full-spreading NOMA massive connectivity Edge computing Multiple access MLP Deep learning Railway Mobility interference mitigation HST non-orthogonal multiple access
Status : Published 
Date : 2019-09 
Title : Cooperative Superposed Transmission in Cellular-based V2V Systems 
Authors : Taehyung Kim, Yosub Park, Hyunsoo Kim,and Daesik Hong 
Journal : IEEE Transactions on Vehicular Technology 
Abstract : Vehicle-to-vehicle (V2V) communication is a critical 5G scenario demanding stringent safety requirements. As a way of ensuring safe packet exchange between vehicles in a V2V system, we propose a new cooperative transmission scheme employing a signal superposition technique from non-orthogonal multiple access (NOMA), which we call cooperative superposed transmission (CST). In the proposed CST, vehicle user equipments (VUEs) superpose other VUEs’ signals that they have received on to their own transmission signals. This allows them to retransmit other users’ V2V packets during their packet transmission. The result is high communication reliability because packets can be sent multiple times without intensifying interuser interference (IUI). We perform a theoretical analysis, then use it to derive a closed-form expression for the link reliability of the proposed CST. Based on this, a new power control and user pairing algorithm is designed to maximize reliability. Simulation results show that the proposed scheme achieves higher reliability and lower latency than the conventional transmission schemes used in cellular-V2V (C-V2V) systems. Moreover, the proposed CST guarantees high reliability in various road environments and system settings. 
URL : https://ieeexplore.ieee.org/document/8863432 
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» [IEEE Trans. Veh. Technol.] Taehyung Kim, Yosub Park, Hyunsoo Kim,and Daesik Hong, "Cooperative Superposed Transmission in Cellular-based V2V Systems", IEEE Trans. Veh. Technol., Sep. 2019 Published  2019-09 
1 [IEEE Trans. Veh. Technol.] Yosub Park, Taehyung Kim, and Daesik Hong, "Resource Size Control for Reliability Improvement in Cellular-based V2V Communication", IEEE Trans. Veh. Technol., Oct. 2018 file Published  2018-10