1 5G Networks Research and Development Octorber 17 st 2016 Prof. Luciano Leonel Mendes
2 • Overall presentation: Luciano Mendes • Waveform comparison: Dan Zhang and Maximilian Matthe (TU Dresden) • I/Q Imbalance: Wheberth Dias • Synchronization: Alexandre Carvalho • Sync Errors: Danilo Gaspar • Frame structure: Juliano Silveira • MODEM GFDM: Martin Dannenberg (TU Dresden) • Space-time coding: Francisco Portelinha and Tiago Cardoso • Windowing: Tiago Cardoso Authors
3 • Develop a 5G transceiver as proof-of-concept for 5G networks. • Propose a new 5G operation mode for broadband access in remote areas. • Real time demonstrations of a functional 5G system in Santa Rita do Sapucaí. Motivations
4 Waveforms Comparison
5 Goal: define which waveforms are interesting for 5G • GFDM: Generalized Frequency Division Multiplexing • f-OFDM: filtered Orthogonal Frequency Division Multiplexing • UF-OFDM: Universal Filtered Orthogonal Frequency Division Multiplexing • FBMC: Filter Bank Multicarrier Waveforms comparison
6 Out-of-band emissions: FBMC outperforms the other waveforms Waveforms comparison
7 Peak to Average Power Ratio: GFDM can achieve the lowest PAPR. Waveforms comparison
8 Frame Error Rate: GFDM achieves the best performance in mobile channels. GFDM presents the best trade-off among complexity, performance and flexibility. Waveforms comparison
9 Transceiver Structure
10 Ethernet Interface Channel encoder QAM Mapper PRBS data Channel Estimation Frame Structure SDR Platform TR-STC Encoder Carrier offset Sync.
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- Trigraph, Spacetime, Frequency-division multiplexing, Orthogonal frequency-division multiplexing