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WiMAX™ Implementation of MIMO

Mobile WiMAX™ is based on the IEEE 802.16e standard but is evolving in waves as it overcomes market limitations. Wave 2 products include MIMO (Multiple Input, Multiple Output) techniques. The techniques used with the smart antenna technology of MIMO makes it possible to put more data into a wireless connection and extend the range. It is expected that Mobile WiMAX with MIMO will be able to carry approximately 4x more traffic than today’s 3G networks. In this case, wireless video becomes more realistic. The unique aspect of the MIMO implementation is the use of OFDMA. In OFDMA user data bursts overlap in time. This maximizes data flow in a complex environment.

  Figure 1. OFDMA burst structure.
  OFDMA Burst Structure

At any one point in time, there is data from multiple bursts available on different subchannels, as shown on the Y axis of Figure 1. These subchannels are logical arrangements of subcarriers, not physical arrangements of subcarriers. Therefore, adjacent subcarriers may actually belong to different subchannel groupings and be different modulation formats. While each data burst may only use one modulation format, adjacent subcarriers may have different modulation formats. And because each burst is unique, the pilot locations will be at many different subcarrier locations. The end result is a complexity not found in OFDM.

The complexity drives more sophisticated testing. Agilent is on the forefront of this testing. Accelerate Wireless Design and Test with Flexible, High-Performance Platforms

Sources: Agilent Webinars, Wikipedia, wi-fiplanet.com

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N6422C WiMAX™ Wireless Test Manager - Technical Overview 
Agilent's test manager software provides ready-to-use tests, test plans, test sequencing, and menu-selectable hardware support for quick and easy automation of device verification and pre-conformance test processes.

Technical Overview 2013-12-23

N5106A PXB Baseband Generator and Channel Emulator - Configuration Guide 
This configuration guide offers assistance in the ordering process for the PXB, including convenient bundles and custom configurations.

Configuration Guide 2013-11-25

PDF PDF 1.15 MB
What every engineer needs to know about MIMO operation and measurement 
Utilizing MIMO to its fullest potential requires the engineer to have basic knowledge of its operation and measurement. This EP&T article by Agilent boils this knowledge down into 9 fundamental facts.

Article 2010-09-15

 
Solutions for MIMO RF Test and Debug 
Ensuring Quick and Accurate Four-Channel, Phase-Coherent MIMO Measurements

Application Note 2010-07-14

PDF PDF 300 KB
MIMO RF Signal Analysis and Generation Test Systems and SW with V2895A MIMO Synchronization Unit 
The flexible MIMO RF signal analysis and generation systems/software allow for any MIMO configuration up to 8x8 for MIMO-ready vector signal generators/analyzers using the MIMO synchronization unit.

Technical Overview 2010-05-19

Agilent Technologies to Showcase Latest RF/Microwave Design and Test Products at IMS 2010 

Press Materials 2010-05-11

 
Solutions for MIMO Receiver Test 
This application note shows how engineers can quickly and accurately isolate issues early in the lifecycle to minimize design uncertainty and maximize receiver performance.

Application Note 2010-01-14

Using Base Station and MIMO Channel Emulators for Mobile WiMAX Devices 
Printed with kind permision of Microwave Journal. This article describes how a channel emulator can be used to characterize the performance of a MIMO receiver.

Article 2010-01-11

PDF PDF 111 KB
N5106A PXB Baseband Generator and Channel Emulator Flyer 
Keep pace with rapid design changes using the PXB baseband generator and channel emulator to test receiver signal processing to standards and beyond.

Brochure 2009-12-23

PDF PDF 128 KB
Move Forward to What's Possible in WiMAX 
This high-level brochure focuses on Fixed and Mobile WiMAX and details Agilent's solutions along each segment of the product lifecycle.

Brochure 2009-12-14

PDF PDF 1.21 MB
Fading WiMAX™ testing with Agilent's E6651A and an Elektrobit Propsim C8 
This application note describes how to perform receiver testing in a faded environment with the E6651A Mobile WiMAX test set, the N6422C Wireless Test Manager software and a channel emulator

Application Note 2009-12-07

PDF PDF 788 KB
Dual Channel MIMO Measurements for WiMAX™ Wave 2 
In WiMAX Wave 2 systems, a variety of dual-channel measurements can provide essential insight into their operation and performance. Article written by Ben Zarlingo and linked with permission from Wireless Design and Development.

Article 2009-06-26

 
Understanding the Impact of Channel Effects on MIMO System Performance  
Link to article published in the March 2009 issue of Microwave Product Digest discusses unique test and measurement challenges of implementing MIMO in a wireless system

Article 2009-04-28

 
MIMO and the Battle Between LTE and WiMAX™ 
Link to April 10, 2009 Microwave Journal executive interview with Andy Botka and Carla Feldman regarding the PXB MIMO Receiver Test and the broader issue of LTE and WiMAX development.

Article 2009-04-10

 
Test solutions soup up for 4G 
Link to April 9, 2009 Microwave Journal editorial. Test equipment manufacturers are providing more capability by relying on the latest hardware and software for feature-rich and easy to use solutions with impressive raw performance.

Article 2009-04-09

 
Agilent Technologies' MIMO/Multi-Port Connectivity Option Turns Wireless Networking Test Set into 'M 

Press Materials 2009-02-16

 
MIMO Measurement Tips with Agilent P-Series Power Meters and U2000 Series USB Power Sensors 
This application note provides an overview of MIMO, and shows the steps of performing an accurate and repeatable MIMO power measurement by using USB sensors or P-series power meter and sensors.

Application Note 2009-01-20

Mobile WiMAX™ Test Set Solutions Brochure 

Brochure 2008-10-21

PDF PDF 1.67 MB
Agilent Technologies' Firmware Update for its Mobile WiMAX™ Test Set Enables Faster Data  

Press Materials 2008-09-25

 
Agilent Technologies' New Software Options Provide Full Drive Test Functionality  

Press Materials 2008-08-25

PDF PDF 124 Bytes
Analyze Antenna Approaches for LTE Wireless Systems 
Multiple-antenna techniques are a large part of improved performance in LTE wireless systems, but they must be properly understood in order to be properly tested.

Article 2008-08-13

 
Mobile WiMAX™ PHY Layer (RF) Operation and Measurement 
This application note describes the operation and physical layer measurements of 802.16e OFDMA Mobile WiMAX devices.

Application Note 2008-07-17

PDF PDF 7.84 MB
Agilent Technologies to Demonstrate WiMAX™ Test Solutions at 2008 Europe WIMAX Forum(r) Congress 

Press Materials 2008-06-17

 
Agilent Technologies' New Attenuation Control Units Aid in WiMAX™, WLAN Device Testing 

Press Materials 2008-06-11

 
Agilent Technologies Wins Contract from Sequans Communications for Mobile WiMAX(tm) Protocol Conform 

Press Materials 2008-06-10

 

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