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Comparison of 2-bitstream polarization-MIMO performance of 2 and 4-port bowtie antennas for LTE in random-LOS

Sadegh Mansouri Moghaddam (Institutionen för signaler och system, Antennsystem) ; Andres Alayon Glazunov (Institutionen för signaler och system, Antennsystem) ; Jian Yang (Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium ; Institutionen för signaler och system ; Institutionen för signaler och system, Antennsystem) ; Mattias Gustafsson ; Per-Simon Kildal (Institutionen för signaler och system ; Institutionen för signaler och system, Antennsystem)
2015 International Symposium on Antennas and Propagation, ISAP 2015 (2015)
[Konferensbidrag, refereegranskat]

We evaluate the performance of a dual-polarized wideband antenna in terms of polarization-MIMO in Random-LOS for two different modes of operation: 2 and 4-port excited mode. The 2-port mode was obtained by differential excitation of two opposite ports of the 4-port design by using two baluns. The Zero-Forcing receiver throughput is evaluated based on the Probability of Detection of two bitstreams when orthogonal polarizations provide the MIMO subchannels. Assuming a uniform distribution for the Angle of Arrivals and orthogonally polarized waves incident on the antennas, the overall PoD over coverage cones of 30°, 60° and 90° are presented. The 2-bitstream multiplexing MIMO efficiency defined at the 95% Probability of Detection is evaluated for the two modes of operation at different frequencies and for different coverage cones. The 2-bitstream coverage pattern of the antenna for the two modes are plotted over the range of Angles-of-Arrival (AoA), by choosing fixed polarization (horizontal and vertical) for the incoming waves. The coverage pattern is significantly degraded for the 2-port mode, in particular in the middle of the band. © 2015 The Institute of Electronics, Information and Comm.

Nyckelord: Digital threshold receiver; MIMO; probabilty of detection; Random-LOS



Denna post skapades 2017-01-26. Senast ändrad 2017-03-21.
CPL Pubid: 247734

 

Institutioner (Chalmers)

Institutionen för signaler och system, Antennsystem (2014-2017)
Institutionen för rymd- och geovetenskap, Onsala rymdobservatorium (2010-2017)
Institutionen för signaler och system (1900-2017)

Ämnesområden

Hållbar utveckling
Signalbehandling

Chalmers infrastruktur