Aeroflex has added support for 4x2 multi-input multi-output (MIMO) to the 7100 digital radio test set for the R&D testing of LTE user equipment (UE) being designed with this feature.
4x2 MIMO is used adaptively to offer improved throughput in good signal conditions, and improved resilience in poor signal conditions. When the signal-to-noise ratio (SNR) at the UE is good, the device can make use of spatial multiplexing, where multiple information streams are transmitted simultaneously to improve throughput.
When the SNR is poor then transmit diversity is employed. This is where a single information stream is distributed across separately encoded antenna ports to reduce the variations in SNR experienced by the UE, thus improving the cell coverage. Measurements are made both at the base station and at the UE, and these are used to determine how many streams can be supported in the prevailing signal conditions.
Option 7100-111 is a software licence that enables 4x2 MIMO functionality and can be enabled in the field. Testing can be controlled using either command line interface (CLI) control or programming via Remote API.
This new release of the software supports 4x2 MIMO measurements on LTE in FDD mode with bandwidths of 10 MHz, 15 MHz and 20 MHz. It is planned that 1,4 MHz, 3 MHz and 5 MHz bandwidths will be added in due course.
Fading and Additive White Gaussian Noise (AWGN) measurements are supported, using the optional integral fading and AWGN generator, with configurable cross-correlation between streams.
This release of the software supports open loop spatial multiplexing, with closed loop planned to be included in the next release.
Read more...Marktech’s latest LEDs and photodiodes NuVision Electronics
Test & Measurement
Designed for precision sensing and emission tasks, Marktech’s optoelectronic lineup serves medical, industrial, aerospace, and environmental markets.
Read more...MEMS air quality sensor Future Electronics
Test & Measurement
Bosch Sensortec’s BME690 is the latest-generation gas sensor that combines advanced monitoring capabilities with innovative artificial intelligence functionality.
Read more...True-RMS clamp meter measures 2500 A Comtest
Test & Measurement
The Fluke 376 FC True-RMS Clamp Meter with iFlex is the most advanced troubleshooting tool for industrial and commercial electricians.
Read more...Latest wireless barcode scanner Brady Corporation
Test & Measurement
Brady has launched its new barcode scanner, the CR2100, which is a wireless handheld scanner utilising Bluetooth 5 LE for communication with a host device.
Read more...hybridNETBOX instrumentation platform Vepac Electronics
Test & Measurement
The hybridNETBOX from Spectrum Instrumentation is an innovative instrumentation platform that combines a multi-channel arbitrary waveform generator (AWG) and a digitiser in a single portable unit.
Read more...14-bit AWG at 20 GS/s Vepac Electronics
Test & Measurement
The Arb Rider AWG-7000 is the world’s fastest 14-bit Arbitrary Waveform Generator, featuring a 20 GS/s real time update rate and 14-bit vertical resolution.
Read more...Additions to APD5000 series oscilloscopes Osiris Technical Systems
Test & Measurement
Each unit is equipped with an integrated CAT II digital multimeter, three programmable power supplies, a dedicated trigger line, and an arbitrary waveform generator.
Read more...Handheld RTSA up to 9,5 GHz Vepac Electronics
Test & Measurement
The PXE-90 implements an FFT engine on the built-in FPGA and support frame compression with trace detection while ensuring no missing samples between FFT frames.
printer friendly version