Agilent Measurement Journal - Issue 5 - 2008 - (Page 25)

Looking ahead LTE has the potential to enhance current deployments of 3GPP networks and enable signiﬁcant new service opportunities. Initially, though, LTE is expected to give equipment designers some difﬁculty because it is an evolving standard and, as such, is open to change and interpretation. From the technology perspective, the number of new techniques used in the downlink (and the uplink as well) add substantial complexity. For example, the use of multiple antenna conﬁgurations to support high data rates makes the design of UE quite complicated, as does the introduction of the new downlink and uplink multiple-access schemes. It may be some time before the real-world behavior of these enhancements is well understood and products are optimized accordingly prior to system deployment. References 1. Long Term Evolution of the 3GPP Radio Technology, www.3gpp.org/Highlights/LTE/LTE.htm 2. 3GPP TR 25.892 V6.0.0 (2004-06) www.3gpp.org/ftp/Specs/html-info/25892.htm 3. 3GPP TS 36.211 V8.2.0 (2008-03) www.3gpp.org/ftp/Specs/html-info/36211.htm “WiMAX,” “Fixed WiMAX,” “Mobile WiMAX,” “WiMAX Forum,” the WiMAX Forum logo, “WiMAX Forum Certiﬁed,” and the WiMAX Forum Certiﬁed logo are trademarks of the WiMAX Forum. All other trademarks are the properties of their respective owners. Figure 11. Example of a setup menu for downlink signal analysis Figure 12. In-channel EVM measurements using 89601A LTE application Agilent Measurement Journal 25 http://www.3gpp.org/Highlights/LTE/LTE.htm http://www.3gpp.org/ftp/Specs/html-info/25892.htm http://www.3gpp.org/ftp/Specs/html-info/36211.htm

Table of Contents Feed for the Digital Edition of Agilent Measurement Journal - Issue 5 - 2008

Agilent Measurement Journal Issue 5 Finding a New Path when Assumptions Break Down Contents Testing MIPI D-PHY Protocols Oscilloscope Firmware Update DNA Replication Joining the LTE/SAE Trial Initiative Testing Proteins Praise for DC Power Analyzer Scripting Features for AMDS Testing Hybrid PCBA Systems Improving the Gene Expression System Workflow Turning a “Good Enough” Test Strategy into One That’s Reliable, Repeatable and Traceable Understanding the Effects of Limited-Bandwidth Channels on Digital Data Signals Introducing the 3GPP LTE Downlink Validating the 26 Validating the Physical and Protocol Layers in DDR Memory Interfaces Understanding Total Jitter Measurements of Low Probabilities Using Behavioral-Model Simulation to Accurately Predict First-Order PLL Performance Creating Synchronous High-Frequency Sampling across Multiple Digitizers Overcoming the Challenges of Testing FlexRay Networks Understanding Operating Life and Repeatability of Electromechanical Switches and their Effect on Total Cost of Ownership Implementing Micro and Nano LC/MS Techniques for High Sensitivity Lipidomics Analysis

Agilent Measurement Journal - Issue 5 - 2008

For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.