摘要
OFDM技术具有频谱利用率高、抗频率选择性衰落能力强的优点,适合高速数据传输,自适应传输技术可以根据信道质量的好坏自适应调整传输方式,提高传输效率。本文论述了OFDM的优缺点、应用、自适应传输原理以及各种自适应传输算法。
As a transmission technique, OFDM is superior in utilizing frequency resources adequately, counteracting frequency-selective dwindling of signals, so it is applied in transmitting data in a high speed. The adaptive transmission technique has such a virtue as choosing the transmission method adap-tively according to the status of the channels, so as to improve the transmission efficiency. In this paper, the conception of OFDM and its strongpoint, disadvantage in transmitting data are discussed, and the principle of self-adaptive transmission and kinds of algorithms are introduced and compared in detail.
出处
《信息工程大学学报》
2005年第1期73-76,共4页
Journal of Information Engineering University
基金
河南省杰出人才创新基金资助项目(0421000100)
关键词
OFDM
抗多径干扰
自适应传输
算法
OFDM
multipath disturbance
self-adaptive transmission
algorithm
