论文部分内容阅读
本文叙述了MATS-D的混合传输方案.此方案在双工无线电链路的两个传输方向中采用了不同的传输原理.以无线电传输特性和多路接续方法的分析为依据.两个传输方向采用相互独立的设计.在下行链路中(从基地台至移动台)应用了TDM和CDM相组合技术.而在上行链路中(从移动台至基地台)则使用了具有广义软调频(GTFM)的每载波单信道FDMA技术.两种传输方案(硬件电路)已完成.借助衰落产生器进行了测量.而且,还进行了野外试验.本文给出了以比特误码率对信嗓比和信干比表示的两种传输方案的性能实验结果.
This paper describes the hybrid transmission scheme of MATS-D, which uses different transmission principles in the two transmission directions of the duplex radio link, based on the analysis of radio transmission characteristics and multiplexing methods.The two transmission directions Using separate designs TDM and CDM combining techniques are used in the downlink (from base station to mobile station) whereas in the uplink (from mobile station to base station) a hybrid system with generalized soft-tone GTFM) per-carrier single-channel FDMA technology.Two kinds of transmission schemes (hardware circuits) have been completed.With the help of the fading generator, we also carried out the field test.This paper gives a bit error rate of signal to noise ratio And signal to interference ratio of the performance of the two transmission scheme results.