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Coding and Signal Transmission (CST) Laboratory |
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A step
beyond MIMO: Media-based Modulation
ISIT
2013: Paper ISIT 2014: Paper Amir
K. Khandani
Abstract
Wireless area is in need of breakthroughs that can be readily applied to product development. Multiple-Input Multiple-Output (MIMO) antenna systems, developed in parallel by AT&T and Bell Labs in late 90’s, resulted in a significant increase in throughput of wireless networks and soon found its way in many wireless products. After MIMO, a more recent breakthrough, namely Interference Alignment (IA) was introduced by my group in 2006. IA has attracted significant attention, however, in spite of extensive efforts by industry and academia, its practical implementation remains challenging. This research work introduces a novel approach to wireless communications which can be readily used in practice and offers huge performance gains with respect to traditional MIMO, at the same time offering a lower complexity. The key idea is based on embedding the information to be transmitted in the dynamics of the transmission media (channel), thereby called media-based wireless, in contrast to the traditional systems which are based on embedding the information in the RF source to be transmitted over the given (fixed/static) channel. In particular, using a single transmit and K receive antennas, savings in energy in the range of tens of dBs with respect to a KxK traditional MIMO are reported. This gain is due to:
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