Calendar Details

Communications Society (COM-19)

Long Term Evolution is the next installment in the series of 3GPP standards, serving as an evolutionary step towards 4G. LTE uses OFDMA in the downlink direction and SC-FDMA in uplink, and achieves corresponding peak data rates of 100 Mbps and 50 Mbps. The standard also employs MIMO with up to 4 transmit and 4 receive antennas to provide either increased diversity or increased data rates.

This talk will try to throw light on what real world LTE signals look like. Agilent's 89600 Vector Signal Analysis software will be used to drill deep in to the structure and contents of LTE signals. We will explore what OFDMA achieves in downlink, why uplink uses SC-FDMA, what the effects of MIMO antennas and channels are, etc. Being a complex technology, LTE requires complex and sophisticated mechanisms to test and measure devices based on it. Some key measurements that makers of LTE base stations and user equipments are interested in will be presented along with demonstrations of how the 89600 VSA software accomplishes these measurements.

Iyappan Ramachandran obtained his MS and PhD degrees from the University of Washington in 2003 and 2006, respectively. At present, he is an R&D Engineer in the Signal Analysis Division of Agilent Technologies, where he is involved in the design of test and measurement methodologies for next generation advanced wireless communication technologies.