Agilent and Nomor Research facilitate LTE field trials
November 03, 2010 // Colin Holland
A cost-effective approach for engineers who need to generate real-world cellular interference signal conditions to validate LTE system performance is being provided by cooperation between Agilent Technologies Inc. and Nomor Research GmbH (Munich, Germany).
Realistic emulation of the uplink inter-cell interference generated in a multi-cell LTE network is ensured through use of system-level simulation and complies with 3GPP and NGMN simulation methodology. The signal is physically generated by an Agilent MXG signal generator and can be coupled into the receiver path at the base station.
The test solution is currently being used by most infrastructure vendors participating in global LTE field trial activities and is now is being made widely available. A set of default interference files for representative scenarios is provided at no cost and may be used with any Agilent MXG signal generator. An extended pack of interference files for alternative deployment scenarios and customized parameter settings is available on request.
"Performance evaluation of LTE systems must be done under realistic interference conditions," said Moray Rumney, lead technologist with Agilent. "Until recently, the only way to do this involved expensive and time-consuming deployment of large numbers of mobile devices in adjacent cells. With this new method, a near equivalent interference environment can be created at the base station representing the combined interference from hundreds of mobiles in adjacent cells."
Eiko Seidel, chief technical officer of Nomor Research added, "The newly standardized orthogonal LTE uplink access scheme has changed the uplink interference characteristics in such a way that traditional Gaussian noise methods for emulating interference are no longer suitable for realistic performance testing."
"Inter-cell interference in today’s LTE networks is highly variable with respect to time and frequency, and is dominated by a small number of interferers per resource block, causing unexpected behavior for adaptive algorithms that respond to inter-cell interference. Only realistic modeling of inter-cell interference offers infrastructure manufacturers and operators a tool for testing advanced base-station scheduling algorithms and for quantifying the true performance of LTE base-station equipment," said Seidel.
RS Components and Allied Electronics connect with Rosenberger for global distribution
October 24, 2014
RS Components (RS) and Allied Electronics, the trading brands of Electrocomponents plc, have signed a global distribution ...
Pixel chip sparks energy-efficient intelligent LED headlamps
Noise cancellation: The sounds of silence in the car
HPLEDs double light output, cut costs by 40 percent
Startup creates virtual cores
Photochemical compounds for tunable OLED devices
October 24, 2014
Spanish researchers have developed new organic compounds characterized by a higher modularity, stability and efficiency, ...
Consumer chips in the car? Experts demand adequate design processes
Murata cheerleaders demonstrate sensors, swarm intelligence
Radon and VOCs detection goes personal
- 5 Best Practices for Designing Flexible Test Stations
- Intelligent PLCs Expand the Internet of Things
- Solutions for Millimeter Wave Wireless Backhaul
- Enter Linduino
InterviewCEO interview: AMS' Laney on driving a sensor-driven business
Kirk Laney, CEO of Austrian mixed-signal chip and sensor company AMS, wants to leverage the opportunity that technology affords to create new markets for sensors and sensor interfaces.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Oscium is giving away three of its iMSO-204L dual analogue iOS oscilloscopes, worth USD400 each. Designed with native Lightning compatibility, the iMSO-204L transforms the iPad, iPhone, and iPod touch into an ultra-portable, two-channel oscilloscope.
Since Apple changed its connector, Oscium has been working to bring native compatibility to its customers. The third generation...MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.