Effects of angle-of-arrival estimation errors, angular spread and antenna beamwidth on the performance of reconfigurable SISO systems

This paper investigates the average bit error rate (BER) performance of reconfigurable single-input single-output (RE-SISO) antenna systems in the clustered channel model. The main focus of the paper is to evaluate the impacts of angle of arrival (AoA) estimation errors, angular spread and antenna beamwidth on the performance of a reconfigurable system. In particular, the BER for the RE-SISO systems is presented under perfect AoA knowledge at the receiver. Then, an analytical expression for the BER of the system is derived in the presence of AoA estimation errors. Along with this, the effects of angular spread and antenna beamwidth on the system performance are examined for both perfect and imperfect AoA estimation scenarios. The results indicate that the effect of AoA estimation error is more significant when the cluster angular spread is small. The same conclusion can be made for the antenna beamwidth.