摘要
OFDM调制技术中的子载波频谱可重叠，对频率选择性衰落有很好的改善作用，在HF宽带通信领域有广泛地应用前景。本文介绍一种军用的HF宽带通信多载波传输方案，分析了方案中信道参数的选择方法，以及高斯扰频器的作用，并讨论了保护间隔的加入及采用编码技术对系统性能的影响。
In OFDM modulation technology, frequency spectrum of sub-carrier is overlapable, and it can ameliorate the frequency selective fading, so it has application foreground widly. In this paper, a military HF wideband multi-carrier translation schema is studied.A selection technology of channel parameter and the function of gauss scrambler are analysed,and the influence upon system capability of guard time and coding technology are discussed.
