An Antenna Solution for MIMO Channels: The Switched Parasitic Antenna

Mattias Wennström, Thomas Svantesson (Chalmers) ,

IEEE Symposium on Personal Indoor and Mobile Radio Communication (PIMRC) 2001, San Diego, USA, September 30-October 3, 2001

Abstract:

We investigate the switched parasitic antenna (SPA), which is a novel technique for electronically directing the radiation pattern, in a MIMO system. The correlation between the received signal modes are shown to be sufficiently low to yield diversity gain. The capacity limit using the SPA is investigated for different SPA configurations and it is found that the capacity is comparable with the array antenna configuration in certain situations. Finally, a space time block coding scheme is used to evaluate the bit error rate of a MIMO-SPA system. It was found that the SPA requires 5 dB higher SNR than the antenna array solution to achive BER=10^{-2}. However, the array antenna requires a radio transceiver for every antenna, as opposed to the SPA which uses only one transceiver.

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