OFDM Multiple Antennas Cognitive Radio Relay CDMA Synchronization Channel Estimation Spectrum Sharing Interference Cancellation Resource Allocation Spectrum Sensing Full duplex Neural Networks Stochastic Geometry Equalizer Bi-Directional Feedback Energy Harvesting Heterogeneous Networks Femtocell Device-to-Device (D2D) Dynamic TDD SINR mismatch problem Cell Search Idle cells Ultra-dense small cell networks interference management NOMA FBMC Cross-link interference HetNet Spectral efficiency full-duplex relay full-duplex cellular self-interference cancellation Two-way communications Cognitive relay networks automatic repeat request (ARQ) in-band full-duplex system achievable sum rate MIMO interference to noise ratio transmission capacity (TC) singular value decomposition mode selection outage probability multi-spectral selection diversity OQAM Link adaptation beamforming coexistence Iterative decoder LTE-TDD resource size control UL grant free MU-MIMO GFDM UWB Simultaneous Sensing and Transmission Correlated MIMO bursty traffic model Bi-directional full-duplex Time spreading Heterogeneous channel estimation capability sensing duration LTE-based V2V time-frequency efficiency massive connectivity Preamble Aggregate interference Long Term Evolution-Advanced interference coordination 5G networks Windowing prototype filter TS-W-OFDM Grant-free Transmission Complexity Asynchronous Transmission eigen decomposition interference mitigation pilot signal K-S statistics Vehicle-to-vehicle communication tabu-search Resource management Cooperative systems Singular Vale Decomposition mixed numerology flexible duplex 5G Reliability C-V2V CP-OFDM link reliability non-orthogonal multiple access full-spreading NOMA Vehicle-to-Vehicle Filtered OFDM Coexistence scenarios
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