Performance of amplitude limited multitone signals
Performance of amplitude limited multitone signals
复制标题
限幅多音信号的性能
DOI：
10.1109/vetec.1994.345381
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
L. Lopes
中科院分区：
文献类型：
--
作者：
R. O'Neill;L. Lopes
多音调数据传输格式最近一直在收到越来越多的兴趣，作为在固定和移动链路上的传输潜在可行的技术。但是，调制格式的缺点是，每个传输的多音节符号都有一个非恒定包络，并具有较大的瞬时功率尖峰。这可能导致调节剂中的非线性效应，从而导致调节失真和光谱扩散。在本文中，考虑每个符号的峰值功率极限（或夹子级）的使用，这可以有助于维持线性。在理论上和通过仿真上，分析了对每个亚渠道造成的符号错误率（SER）的影响。还引入了在给定夹子约束下减少每个子通道上的SER的简单策略。<< etx >>
The multitone data transmission format has been receiving increasing interest recently as a potentially viable technique for transmission over both fixed and mobile links. However a disadvantage of the modulation format is that each transmitted multitone symbol has a non-constant envelope, with large instantaneous power spikes possible. This can lead to non-linear effects in the modulator causing intermodulation distortion and spectral spreading. In this paper the use of a peak power limit (or clip level) is considered for each symbol which can help to maintain linearity. The impact of applying such a clip level is analysed in terms of the symbol error rate (SER) caused on each subchannel, both theoretically and through simulation. Also a simple strategy for reducing the SER on each subchannel under a given clip constraint is introduced.<<ETX>>