Stevenage, United Kingdom-November 2012-Aeroflex Limited, a wholly-owned subsidiary of Aeroflex Holding Corp. (NYSE: ARX), recently announced: In addition to its existing frequency division duplex (FDD) function, the TM500 LTE-A test mobile phone now also adds support for time division duplex (TDD) carrier aggregation. As a key component of LTE-A technology, carrier aggregation superimposes multiple carriers composed of continuous or non-continuous spectrum to achieve wider channel bandwidth and higher data rate.
LTE-A can provide a combination of up to 5 component carriers, each with a 20 MHz bandwidth. The purpose is to increase the peak data rate to 1 Gbps or even higher. The Third Generation Partnership Project (3GPP) Release 10 specifies 11 TDD frequency bands and a series of in-band continuous and non-continuous carrier aggregation scenarios for these bands. The technology can also combine the capacity of different frequency bands to maximize the advantages of superior transmission capabilities in lower frequency bands.
As a de facto industry standard for testing LTE base stations or eNodeBs, TM500 test mobile phones can now support all TDD carrier aggregation scripts specified in 3GPP Release 10. Alphas will continue to work closely with leading network infrastructure providers to help them develop and start rolling out the high-bandwidth services agreed upon by LTE-A.
"The TDD version of LTE and its evolved version of LTE-A are important not only in China and other countries in Asia, but also in Europe where some TD-LTE networks have been deployed. From the perspective of spectrum efficiency, carrier aggregation is actually It is more relevant to the TDD system because it allows small bands of unpaired spectrum to be combined and efficiently used, "said Shusina Ngwa, Product Manager of Avas. "In this early stage, it is critical to provide TDD carrier aggregation capabilities to cellular infrastructure providers, so they can test their networks in advance of the actual terminal and mobile phone before using the TM500 test mobile phone of EAFIS. "
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