自适应变速率MOAM技术的研究及其在数据通信中的应用(英文)

Study of Vary-rate Adaptive MQAM Technology and Its Application in Data Communication

传统的M QAM抗干扰能力较差,若使用减小M的方法提高抗干扰力,又会降低频带利用率,本文提出一种自适应变速率M QAM系统,根据信道情况自动调整M值,并研究了该系统在无线移动瑞利衰落信道中的性能,其频带利用率大于等于3.2b/s/H z,远远高于一般系统的相应指标。

Traditional MQAM is easy to be disturbed. If we reduce M, the bandwidth efficiency will turn low. This paper presents a vary-rate adaptive MQAM communication system. This technique can automatically change M by the situation of the channel. This paper also studies the performance of this system. The bandwidth efficiency is more than 3. 2b/s/Hz, much higher than common system.