Part 4 of a video recording of a class lecture by Prof. Raj Jain on Introduction to 5G. The lecture covers 5G Definition, Importance, Timeline, How?, New Radio Multiplexing Technologies, Problems with OFDM, Spectrum Filtered OFDM (f-OFDM), Filtered Bank Multicarrier (FBMC), Non-Orthogonal Multiple Access (NOMA), Pattern Division Multiple Access (PDMA), Low Density Spreading (LDS), Sparse Code Multiple Access (SCMA), SCMA Example, Interleave-Division Multiple Access (IDMA), New Efficient Spectrum Usage Techniques, 3D Beamforming, FDD-TDD Carrier Integration, Distributed Antenna Systems (DAS), Simultaneous Transmission and Reception, Dynamic TDD, License Assisted Access (LAA), Multimode Base Stations, Intelligent Multi-Mode RAT Selection, Hyper-Dense Small Cells, New Energy Saving Mechanisms, Discontinuous Transmission (DTX), Antenna Muting, Cell On/Off Switching, CapEx/OpEx Reduction Techniques, Software Defined Networking (SDN), Network Function Virtualization, Mobile Edge Computing (MEC), Cloud Radio Access Network (C-RAN), New Spectrum, Above 6 GHz, Application Specific Improvements, LTE Applications, Machine Type Communication, Signaling Enhancements for MTC, Power Saving Mode (PSM), Dynamic Adaptive Streaming over HTTP (DASH), References