IS—2000—3x反向链路仿真研究

Simulation Research on IS-2000-3x Up-Link

IS— 2 0 0 0是美国向ITU提出的第三代移动通信空中接口标准 ,其中IS— 2 0 0 0 3x能够满足IMT— 2 0 0 0的性能要求 ,但目前在技术实现方面尚未成熟 .本文着重对车载环境下IS— 2 0 0 03x反向链路的性能进行仿真研究 ,提出了相应的RAKE接收机模型 ,并针对 1 0 0km h ,30 0km h和 5 0 0km h三种车辆行驶速度分别进行 76.8kbit s和 1 5 3.6kbit s两种数据传输速率的性能仿真 .结果表明 ,只要RAKE接收机的信道估计长度选取能够自适应于数据传输速率和终端移动速度 ,即可获得良好的数据传输性能 ,满足IMT— 2 0 0 0的要求 .

IS-2000 is one of the air interface standards of the 3rd generation proposed by America. The IS-2000-3x is designed to satisfy the requirement of IMT-2000. But the realization technology is not mature now. In this paper RAKE receiver for the IS-2000-3x uplink is proposed. The performance for the data rates 76.8?kbit/s and 153.6?kbit/s in three velocities 100?km/h, 300?km/h and 500?km/h are simulated. The results show that as long as the integral length of the channel estimation can adapt to the data rate and the moving speed of the mobile terminal, the BER performance is good enough for high rate data transmission.