摘要
自适应调制技术作为一种有效提高宽带无线通信系统性能的方法,得到了人们的广泛关注。对OFDM自适应调制技术进行了研究和分析,设计了基于子载波的OFDM自适应调制结构,并对该结构的性能进行了仿真分析。仿真结果表明:自适应调制技术能根据信道情况自适应改变系统子载波的调制方式,能有效地提高系统数据传输效率,改善系统的性能。
As a useful technology to improve the performance of broadband mobile communication system, Adaptive mod- ulation has been a popular research in recent years. This paper studied and analyzed the adaptive modulation of subcarri- ers in OFDM, designed the Adaptive OFDM structure, simulated and analyzed its performance. And the conclusion shows that： In this system, the modulation mode of subcarriers could be changed automatically according to the channel state, the data transmission rate is improved efficiently and the performance is more advanced.
出处
《国外电子测量技术》
2010年第11期31-34,共4页
Foreign Electronic Measurement Technology
