Course Highlight
This three-day course provides an overview of the LTE and LTE-Advanced physical layer. Using MATLAB®, and LTE System Toolbox™, attendees will learn how to generate reference LTE waveforms and build and simulate an end-to-end LTE PHY model. Topics include:
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Review of the advanced communications techniques forming the core of an LTE system: OFDMA and SC-FDMA multi-carrier techniques, and MIMO multi-antenna systems
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Descriptions of all of the signals and elements of the processing chain for the uplink and downlink LTE physical channels
- Methods for golden reference verification with the standard
Prerequisite
Attended "Comprehensive MATLAB" or working experience with MATLAB and knowledge of wireless communications system
Course Outline
Day 1 of 3
Introduction to 3GPP Long Term Evolution
Objective: Provide an introduction to the LTE standard and its relationship to other 3GPP standards. Understand general requirements and objectives for LTE. Get an overview of different protocol layers within LTE.
- 3GPP evolution from R5 to R11
- Requirement
- Spectrum flexibility
- General characteristics
- Multi-user scheduling
- Resource allocation
- Frequency reuse planning
OFDM Theory Review
Objective: Understand the basics of OFDM modulation, cyclic prefix insertion and windowing.
- Motivation for multi-carrier vs single-carrier
- Introduction to OFDM
- Generation of OFDM symbols using the IFFT
- Cyclic prefix (guard interval)
- Windowing to reduce out of band emissions
- Advantages and disadvantages of OFDM
LTE Frames, Slots and Resources
Objective: Understand the concepts of frames, subframes, slots, and physical resource grids in LTE downlink and uplink.
- LTE generic frame structure
- Downlink and uplink slot formats
- Resource elements and resource blocks
- Downlink OFDM symbol construction
- Uplink SC-FDMA symbols construction
- LTE downlink resouce capacity
Day 2 of 3
Procedures
Objective: Understand different physical layer procedures for both downlink and uplink specified in LTE.
- Cell search
- Cell identities in cell search
- Symbol synchronization
- Frame and cell synchronization
- System information acquisition: MIBs and SIBs
- Timing synchronization procedures
- Uplink power control
MIMO Background
Objective: Understand different MIMO techniques namely diversity, beamfoarming, and spatial multiplexing. Learn about singular value decomposition as the solution to generic MIMO.
- Spectral efficiency and capacity
- Transmit and recieve diversity
- The Alamouti Scheme
- Delay Diversity and Cyclic Delay Diversity
- Beamfoarming
- Spatial multiplexing
- Singular value decompostion
- Equalizing, predistortion, precoding, and combining
LTE Downlink Physical Layer Modulation
Objective: Understand processing elements for different downlink physical channels and downlink physical signals. Learn about resource grid and control channel element.
- Downlink physical channel processing chain
- Codewords and layers
- Scrambling and modulation
- Transmission schemes
- Diversity, spatal multiplexing, and beamfoaming
- Synchronization signals: PSS and SSS
- Reference signals: cell and UE specific, MBSFN
- Downlink physical channels: PBCH, PCFICH, PDSCH, and PDCCH
- Control region
- REGs and CCEs, PDCCH search spaces
- Resource grid mapping
MIMO in LTE R8
Objective: Learn different MIMO techniques specified in the LTE standard.
- Codewords to layers mapping
- Precording for spatial multiplexing
- Precoding for transmit diversity
- Beamfoaming in LTE
- Cyclic Delay Diversity-based precoding
- Precoding codebooks
Day 3 of 3
LTE Multiplexing and Channel Coding
Objective: Understand the coding, multiplexing, and mapping to physical channels for all transport channels in downlink and uplink.
- Transport channels and control information: DL-SCH, PCH, BCH, DCI, CFI, HI, UL-SCH, and UCI
- Mapping of transport channels to physical channels
- CRC coding and masking
- Code block segmentation
- Convolutional and turbo coding
- Rate matching, bit selection and pruning
- Transport channels and control information processing chains
- HARQ: incremental redundancy, stop-and-wait
LTE Uplink Physical Layer Modulation
Objective: Understand processing elements for different uplink physical channels and uplink physical signals.
- Uplink physical channel processing chain
- Scrambling and modulation
- SC-FDMA review
- Uplink Reference signals: DRS and SRS
- Uplink physical channels: PUSCH, PUCCH, and PRACH
- Control information: CQI, RI, PMI, HI and SR
- Control signaling on PUSCH and PUCCH
- PUCCH formats
- Uplink physical channels and physical signals
LTE Release 9
Objective: Learn about new features introduced in LTE Release 9.
- Release 9 features
- MBMS support
- Home eNodeB
- Positioning support
- Transmission schemes
LTE Advanced-Release 10
Objective: Learn about new features introduced in LTE Release 10.
- IMT- Advanced Tehcnologies
- Carrier aggregation
- Uplink spatial multiplexing
- Spatial Orthogonal Resource Transmit Diversity
- Downlink enhanced MIMO
- CSI reference signals