Array gain would be well exploited to improve power coverage if some powerful multipath components from different radio links can coherently combine at the receiver （Rx）. Thus, in this paper, an algorithm is propose...Array gain would be well exploited to improve power coverage if some powerful multipath components from different radio links can coherently combine at the receiver （Rx）. Thus, in this paper, an algorithm is proposed for transmission in simulcast system, where partial channel state information （CSI） is needed. Based on measured multipath channel, performance of the proposed algorithm is evaluated. According to simulation results, the proposed algorithm outperforms the direction summation （DS） scheme and multipath antenna diversity （MAD） algorithm, with 2～4 dB advantage over the latters. Especially in line of sight （LOS） scenario, the advantage is more obvious. Besides, the proposed algorithm brings more gain with increasing number of transmit antennas without additional power. Finally, robustness of the proposed algorithm is examined with imperfect CSI.展开更多
基金supported by the National Natural Science Foundation of China(61171105)China Information Technology Designing & Consulting Institute Ltd(CITC)-School of Information and Communication Engineering(SICE)in BUPT Graduate Innovation Fund for 2011
文摘Array gain would be well exploited to improve power coverage if some powerful multipath components from different radio links can coherently combine at the receiver （Rx）. Thus, in this paper, an algorithm is proposed for transmission in simulcast system, where partial channel state information （CSI） is needed. Based on measured multipath channel, performance of the proposed algorithm is evaluated. According to simulation results, the proposed algorithm outperforms the direction summation （DS） scheme and multipath antenna diversity （MAD） algorithm, with 2～4 dB advantage over the latters. Especially in line of sight （LOS） scenario, the advantage is more obvious. Besides, the proposed algorithm brings more gain with increasing number of transmit antennas without additional power. Finally, robustness of the proposed algorithm is examined with imperfect CSI.
