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Experimental evaluation of a reconfigurable antenna system for blind interference alignment
Conference proceeding   Open access

Experimental evaluation of a reconfigurable antenna system for blind interference alignment

Simon Begashaw, James Chacko, Nikhil Gulati, Danh H Nguyen, Nagarajan Kandasamy and Kapil R Dandekar
2016 IEEE 17th Annual Wireless and Microwave Technology Conference (WAMICON), pp 1-6
Apr 2016
DOI: https://doi.org/10.1109/WAMICON.2016.7483855
url
http://arxiv.org/abs/1603.08987View
SubmittedOpen Access (License Unspecified),  Open

Abstract

Antenna measurements Array signal processing reconfig-urable antenna Radio transmitters Receiving antennas Interference wireless networks interference management Blind interference alignment (IA)
In recent years, several experimental studies have come out to validate the theoretical findings of interference alignment (IA), but only a handful of studies have focused on blind interference alignment. Unlike IA and other interference mitigation techniques, blind IA does not require channel state information at the transmitter (CSIT). The key insight is that the transmitter uses the knowledge of channel coherence intervals and receivers utilize reconfigurable antennas to create channel fluctuations exploited by the transmitter. In this work, we present a novel experimental evaluation of a reconfigurable antenna system for achieving blind IA. We present a blind IA technique based on reconfigurable antennas for a 2-user multiple-input single-output (MISO) broadcast channel implemented on a software defined radio platform where each of the receivers is equipped with a reconfigurable antenna. We further compare this blind IA implementation with traditional TDMA scheme for benchmarking purposes. We show that the achievable rates for blind IA can be realized in practice using measured channels under practical channel conditions. Additionally, the average error vector magnitude and bit error rate (BER) performances are evaluated.

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10 citations in Scopus

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