TONEX’s 802.11n -- higher throughput improvements using MIMO (multiple input, multiple output antennas) -- course provides a comprehensive understanding of the 802.11n architecture and technology. 802.11n builds upon previous 802.11 standards by adding MIMO. Multiple transmitter and receiver antennas are used in MIMO to allow for increased data throughput through spatial multiplexing and increased range by exploiting the spatial diversity, perhaps through coding schemes like Alamouti coding. MIMO technology constitutes a breakthrough in the design of wireless communications systems, and is already at the core of several wireless standards including 802.11n. Exploiting multipath scattering, MIMO techniques deliver significant performance enhancements in terms of data transmission rate and interference reduction.
The course will cover major aspects of 802.11n with in depth information, example implementations, case studies and practical guidance to give your team members a running start.
Objectives
Understand the basics of 802.11 architecture
Describe the key components in the 802.11n architecture
Sketch the connectivity of 802.11n network components and their importance
List basic 802.11n protocols
Understand the basics of 802.11 protocols
Understanding the basics of OFDM
Understand the basics of MIMOs
Understand the basics of 802.11n PHY
Understand the basics of 802.11n MAC
Identify the issues with 802.11n implementation
Identify the importance of 802.11n functional and performance requirements and RF issues
Discuss 802.11n deployment considerations
Describe 802.11n QoS and security mechanisms
Discover challenges with deploying 802.11n
Identify 802.11n network monitoring and performance tuning
Course Outline
Introduction to Wireless Networking
Overview of 802.11 Networks
IEEE 802 Network Technology Overview
802.11 Nomenclature and Design
802.11 Network Operations
Mobility Support
802.11 Protocols
802.11 Legacy
802.11a
802.11b
802.11g
802.11n
Channels and International Compatibility
Certification
Standards
Pre-n Equipment
Wi-Fi Certification
Draft 2.0 Products
Principles of OFDM
Introduction to Orthogonal Frequency-Division Multiplexing (OFDM)
OFDM Characteristics and Principles of Operation
Orthogonality in OFDM
Guard Interval for Elimination of Inter-symbol Interference
Simplified Equalization
Channel Coding and Interleaving
Adaptive Transmission
OFDM Extended with Multiple Access
Space Diversity
Linear Transmitter Power Amplifier
Introduction to MIMO (Multiple Input, Multiple Output) Antennas
MIMO Wireless Communication
MIMO Channel and Signal Model
MIMO Transceiver Design
MIMO in Wireless Networks
MIMO in 802.11n
Capacity Limits of MIMO Systems
Space–Time Coding for Wireless Communications: Principles and Applications
Space–Time Coding Principles
Fundamentals of 802.11n Receiver Design
Reception of Uncoded Signals
MIMO Receivers for Uncoded Signals
MIMO Receivers for Coded Signals
802.11n Physical Layer (PHY) Overview
Channel Width
MAC Efficiency Enhancements
Channel and Radio Modes
Protection
MIMO PHY
Structure of an Operating Channel
Modulation and Coding
Interleaver
Space-Time Block Coding (STBC)
Modulation Rates
MIMO and Transmission Modes
Greenfield
Mixed Mode
PLCP and PMD Principles
802.11n PHY Interface
PHY Interface
PLCP Packet Format
Operating Mode
Modulation and Coding Scheme (MCS)
Transmission in the Upper/Lower MHz of a MHz Channel
Legacy Field Transmission
The High Throughput Preamble
QAM Mapping Space-Time-Block-Coding (STBC)
Pilot Subcarriers
802.11n OFDM Modulation
Spatial Mapping
Transmission in MHz HT Mode
Transmission in HT Duplicate Mode
Transmission with a Short Guard Interval
Legacy Duplicate Transmission
Channel Numbering and Channelization
Channel Allocation in the GHz Band
Channel Allocation in the GHz Band
Transmit Spectrum Mask
Spectral Flatness
Transmit Power
Transmit Center Frequency Tolerance
Packet Alignment
Reduced Interframe Space (RIFS)
Beamforming
Non Compressed Steering Matrix Feedback
Compressed Steering Matrix Feedback
High Throughput Preamble Format for Sounding PPDUs
Sounding with a Zero Length Packet
Sounding PPDU for Calibration
Sounding PPDU for Channel Quality Assessment
General Description of 802.11n MAC Enhancements
Frame Formats
MAC Frame Formats
Control Frames
Block Ack (BA) MPDU
Format of BAR MPDU
Management Frame Formats
Management Action Frames
MIMO Power Save Management Action Frame
MIMO Channel Measurement Frame
MIMO CSI Matrices Frame
MIMO Uncompressed Steering Matrices Frame
Compressed Steering Matrices Feedback Frame
Antenna Selection Indices Feedback Frame
Aggregated MPDU Format (A-MPDU)
MAC Sub-Layer Functional Description
Protection Mechanisms
Aggregation Exchange Sequences and Related Rules
Security
Link Adaptation
MAC Sub-Layer Management
Probe Response Rule
Coexistence Management
Channel Management
Rules for Operation in /MHz BSS
STA Asking for MIMO Power Save Support
Channel Management at the AP
Planning a 802.11N Wireless LAN
Managing a 802.11 Implementation
Requirements Analysis Steps
Analyzing the Feasibility of a 802.11n
802.11n Design
802.11n Access Point (AP) Locations
Access Point Frequency Assignments
Complete Coverage (no gaps)
Adequate Capacity
Rules of Thumb Don’t Work
Design Based on Extensive Measurements
Coverage and Capacity
802.11n Propagation and Coverage
Complete Coverage of Target Space
Changing Environment
MIMO Considerations in Capacity and Coverage
Interference Sources
Capacity
Enough Capacity for Expected Usage
Consideration of High- and Low-Density Areas Throughput
Network Scenarios
Interworking and Coexistence with Mobile and Cellular Networks
Implementing an 802.11n-Based Wireless LAN
Designing an 802.11n Wireless LAN
Preparing for Operational Support of an 802.11n Wireless LAN
802.11n Management Operations
Security Architecture
802.11i: Robust Security Networks, TKIP, and CCMP
User Authentication with 802.1X
QoS Architecture
Site Planning and Project Management
802.11n Network Analysis
802.11n Performance Tuning
802.11n Deployment Case Studies and Vendors
802.11n Vendors
Lessons learned from 802.11n Implementations and Deployments
Engineers, developers, managers and anyone else who wants to learn 802.11n.
Prerequisites
Knowledge of 802.11 wireless LANs is recommended but not necessary.
Testimonials
Excellent Presentation, Organization and Delivery. Knowledge and command of the subject of the instructor was excellent.
Bernard Drew 802.11n Fundamentals JMD
The Instructor communicated to the class in an excellent way. Excellent Class.
Bob Bayruns 802.11n Fundamentals JMD
Excellent Technical Class. The instructor's knowledge and command of the subject was excellent. Patric Tao 802.11n Fundamentals Kiyon, Inc
The presentation, organization and the delivery of the instructor was excellent! In overall, I rate this program as "Excellent" 802.11n and Microwave Fundamentals
Fred Vaziri AT&T
I really enjoyed the classes.
802.11n and Microwave Fundamentals Nancy Soo Hoo AT&T
Excellent Technical Programs!
802.11n and Microwave Fundamentals Bob Watoon AT&T
Excellent Programs! The delivery of the courses was excellent.
802.11n and Microwave Fundamentals Heidi Jones AT&T
