LTE Implementation of MIMO
The smart antenna technology Multiple Input, Multiple Output (MIMO ) is considered essential for LTE to maximize system capacity and provide high data rates. Both 2 transmitter x2receiver designs and 4 transmitter x 4 receiver designs are being considered. The modulation schemes on the uplink and downlink differ. The uplink will be Single-Carrier Frequency Division Multiple Access (SC-DFMA), a OFDM variant, and the downlink is OFDMA.
One of the design motivations of the LTE standard is to keep the terminal or mobile device cost low. Therefore to minimize actual transmit antennas on the mobile device Multiple user MIMO (MU-MIMO) is being considered.
The details of this evolving standard continue to change as the drafts are finalized. To keep up with this technology and learn effective design and test techniques refer to our application notes and training events listed here on this web page.
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3GPP LTE: Introducing Single-Carrier FDMA
This article, published in issue 4 of the Agilent Measurement Journal, describes single-carrier FDMA for 3GPP LTE.
專文 2008-01-01 |
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491 KB
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A primer on MIMO in LTE
An article in Electronic Products, written by Agilent’s Jan Whitacre, exploring the special employment of multiple-input, multiple-output radios to utilize spectrum in Long Term Evolution (LTE) systems.
專文 2010-02-01 |
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Agilent Division Delivers Early Test Solutions for LTE User Equipment
Agilent SystemVue greatly accelerates time-to-market for LTE products.
案例研究 2009-02-20 |
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282 KB
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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.
專文 2008-08-13 |
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Expert Advice: The Importance of Average vs. Peak Performance in Cellular Wireless
The average efficiency of the cell remains much lower than the peaks. November 2008 article by Moray Rumney linked with permission by Microwave Journal.
專文 2008-11-17 |
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Measuring MIMO In LTE Tx And Rx Tests
Find the right combination of LTE test instruments and techniques to evaluate the performance of Long Term Evolution (LTE) components and systems under real-world conditions. A link to the MWJ article by Agilent.
專文 2010-08-18 |
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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.
專文 2009-04-10 |
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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.
專文 2009-04-09 |
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The MIMO Antenna: Unseen, Unloved, Untested!
Microwave Journal (August 2010) article (.pdf) written by Agilent’s Moray Rumney. With the shift of MIMO from theory to real world this article focuses on performance testing in real world conditions.
專文 2010-08-20 |
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693 KB
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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
專文 2009-04-28 |
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Using a design-to-test capability for LTE MIMO
Article written for RF DesignLine by Agilent experts explains how system-level simulation helps engineers gain valuable insight into design sensitivities of LTE MIMO systems.
案例研究 2009-07-10 |
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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.
專文 2010-09-15 |
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