近年来,智能天线技术已成为移动通信中最具吸引力的技术之一,使用智能天线可以大大降低移动系统内的干扰,提高系统的性能和容量.基于TD-SCDMA系统,对系统的干扰及载干噪比进行了分析,重点对不同路径损耗以及误码率下,基站采用智能天线技术对系统容量的改善进行了计算和仿真.仿真结果表明,在相同的路径损耗和误码率下,采用智能天线技术可以显著地提高TD-SCDMA系统的容量.

In recent years,smart antennas technology has become one of the most attractive technologies in mobile communications. By smart antennas technology,mobile base station can reduce interference materially,enhance system performance and improve system capacity.In this paper,we analyze the Carrier-to-Interference-and-Noise-Ration and interference based on TD-SCDMA system,mainly examine the capacity improvement at different BER (bit error rate) and path loss.Computer calculation and simulations have also been carried out.The results of simulations show that smart antennas technology can expand the system capacity markedly at same BER and path loss.

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