LTE physical layer tutorials

LTE video tutorials

@RohdeSchwarz presentations provide an excellent introduction to LTE. The presentations are accompanied by audio narration. The topics covered are covered:

LTE Introduction

• Motivations for LTE
• LTE market and background
• Requirements
• Evolution path to LTE

LTE Parameters and Downlink Modulation

• LTE parameters and frequency bands
• What is OFDMA?
• OFDMA multiple access and downlink frame structure
• OFDMA transmit and receive chains

OFDMA and Downlink Frame Structure Details

• Downlink OFDMA time-frequency multiplexing
• LTE Spectrum Flexibility and Bandwidth
• FDD downlink frame structure detailed
• TDD frame structure

SC-FDMA and LTE Uplink

• Introduction to SC-FDMA and uplink frame structure
• Uplink SC-FDMA transmit and receive chains
• Peak to Average Power Ratio (PAPR) comparison with SC-FDMA and OFDMA

Network and Protocol Architecture

• LTE/SAE network architecture
• EPC -Evolved Packet Core
• Base Station control plane and user plane protocol stacks
• EPC protocol stacks

Channel Mapping and UE Categories

• Logical and transport channel mapping in downlink and uplink
• LTE UE Categories

Initial Cell Search and Cell Selection

• Downlink physical channels and signals
• Cell Search and Selection in LTE (Primary synchronization signal, Secondary synchronization signal, and Reference signals)

System Information

• Downlink reference signal details
• Master Information Block on PBCH
• System Information on DL-SCH

Random Access Procedures and EPS Bearer Setup

• Random access preamble transmission to eNodeB
• Random access response from eNodeB
• Resource allocation and contention resolution
• Signaling on PDCCH
• Hybrid ARQ
• RRC Connection Setup and EPS Bearer Setup

Uplink Channels and Signals

• Uplink physical channels and signals
• PU-SCH: Physical Uplink Shared Channel
• Uplink assignment signaling on PDCCH
• Uplink frequency hopping
• PUCCH

LTE Mobility and MIMO Introduction

• Intra MME Handover over the X2 interface
• RRC States
• MIMO Basics
• Transmit diversity
• Spatial multiplexing
• Beamforming

Downlink and Uplink MIMO in LTE

• Downlink MIMO modes
• Transmit diversity
• Spatial multiplexing
• Cyclic delay diversity
• Beamforming
• Spatial multiplexing downlink transmitter chain
• Codebook based precoding
• Uplink MIMO
• Uplink transmit antenna selection
• Multi-user MIMO

eNodeB and UE Performance Requirements

• eNodeB modulation quality measurements
• eNodeB performance requirements
• UE performance requirements

UE Certification and Field Trials

• LTE terminal testing stages
• LTE terminal certification
• LTE field trial scenarios