Performance of a simulcast radio system using adaptive antenna array

This paper introduces the multiple transmission links between a mobile and ports by using the adaptive antenna array. A simulcasting technique can be used to establish the multiple transmission link in uplink and downlink. When the multipath channel environment between mobiles and ports changes dynamically the transmission power and the weighting vector are adjusted to satisfy the target SIR. Therefore, we propose the weighted power control algorithm and use the LMS algorithm to adjust the weighting vector. We perform simulations to observe uplink performance for the proposed system. We observe that the case of multiple uplinks using an adaptive antenna array has faster convergence than that of single uplink and multiple uplinks using an omni-directional antenna. Thus, the system with multilink has faster adaptability to the interference variation due to time-varying traffic