Aeroflex Tests LTE

Aeroflex introduces the TM500 LTE test mobile

February 19, 2008

2 Min Read

CAMBRIDGE, U.K. -- Aeroflex has introduced the TM500 LTE test mobile designed to address the challenges of 3GPP LTE (3G Long Term Evolution) network infrastructure development test and rollout. The TM500 LTE’s extensive Layer 1, Layer 2 and higher layer test features make it an indispensable testing peer that provides complete visibility into even the lowest layers of the radio modem by generating the detailed diagnostic data needed for engineers to verify the required functionality and optimize network operation and performance.

LTE is the 3GPP’s vision for ensuring that the evolution of UMTS network infrastructure remains the dominant cellular architecture going forward into the next decade. It targets data rates in excess of 100 Mbit/s over the downlink and 50 Mbit/s over the uplink when operating in 20 MHz spectrum allocation, and climbing to peak rates of 300 Mbps in the downlink for the highest category UEs.

LTE technology also ensures high performance for speeds up to 120 km/h and mobility support across the cellular network for speeds up to 350 km/h. In addition to higher data rates, wide-area coverage is also being targeted. The throughput, efficiency and mobility targets must be met for 5 km cells through to 30 km cells and up to 100 km cells. Reduced latency is also being addressed with a target for U-plane latency less than 5 ms in unload conditions with small IP packets.

“LTE is based on a set of high-level requirements designed to deliver improved, high spectrum efficiency and coverage, but at a reduced cost per bit for both operators and users compared to 3G,” said Evan Gray, TM500 manager, Aeroflex Test Solutions, Wireless Division. “Although LTE is designed as an evolutionary upgrade to existing networks, instead of using W-CDMA technology, it adopts the OFDM (Orthogonal Frequency Division Multiplexing) transmission scheme on the downlink and SC-FDMA (Single Carrier Frequency Division Multiple Access) on the uplink in order to provide flexible resource assignment. Furthermore, Multiple-Input Multiple-Output (MIMO) technology and higher order modulation (64QAM) are employed to improve the received signal strength and capacity needed to achieve the high rates and improved coverage. This represents a significant radio access technology shift, the deployment of which is a major challenge. Consequently, it is critical to have test equipment specifically oriented to LTE that can provide the new UE functionality as well as visibility of the physical and higher layer operation of the LTE radio access network components.”

Aeroflex Inc. (Nasdaq: ARXX)

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