Antenna diversity using single antenna in robot communication

This study proposes to exploit multipath signals by repositioning a robot relay node within a quarter to one wavelength from its current position to improve signal quality. By mobilizing the communication node we offer a complementary solution to antenna diversity in environments where antenna diversity cannot be employed. The signal strength characterization is performed over a small area to study the impact of relocation of the node by a quarter to one wavelength. A new conjugate gradient search algorithm for exploiting combined multipath fading is proposed to improve signal quality between a mobile station and a set of other stations – mobile or fixed.