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Design of spectrally-efficient continuous phase modulations

机译:光谱效率连续相位调制设计

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We investigate the spectral efficiency of continuous phase modulations (CPMs). To this end, we need an effective bandwidth definition for a CPM signal, whose power spectral density has in principle an infinite support. The definition we adopt is based on the spacing between adjacent carriers in a frequency division multiplexed CPM system. We consider the inter-channel interference, that depends on the channel spacing, and we evaluate the spectral efficiency achievable by a single-user receiver in the considered multi-channel scenario. We then optimize the channel spacing with the aim of maximizing the spectral efficiency, showing that impressive improvements with respect to the spectral efficiency achieved without optimizing the channel spacing can be achieved.
机译:我们研究了连续相位调制(CPM)的光谱效率。为此,我们需要一个有效的带宽定义,用于CPM信号,其功率谱密度原则上是无限的支持。我们采用的定义基于频分复用CPM系统中的相邻载波之间的间距。我们考虑往复间干扰,这取决于信道间距,并且我们评估了由考虑的多通道场景中的单用户接收器可实现的频谱效率。然后,我们的目的优化信道间距,目的是最大化光谱效率,表明可以实现对在不优化信道间距的频谱效率方面的令人印象深刻的改进。

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