自相关旁瓣接近于零的CPM训练波形
CPM Training Waveforms With Autocorrelation Sidelobes Close To Zero
摘要：
连续相位调制（CPM）由于其恒包络信号特性和严格的频谱限制能力，在无线通信中发挥着重要作用。尽管CPM已经研究了很多年，但据我们所知，CPM训练波形具有零旁瓣的自相关性之前还没有报道。现有的CPM系统设计大多假设信道衰落系数在接收端是完全已知的，或者使用随机的CPM训练波形来估计。在这项工作中，我们提出了一类新的CPM训练波形显示自相关旁瓣接近零。我们构造的关键思想是将差分编码应用于具有完美非周期自相关和性质的Golay互补对。
英文摘要：
Continuous phase modulation (CPM) plays an important role in wireless communications due to its constant envelope signal property and tight spectrum confinement capability. Although CPM has been studied for many years, CPM training waveforms having autocorrelations with zero sidelobes have not been reported before, to the best of our knowledge. Existing works on CPM system design mostly assume that the channel fading coefficients are either perfectly known at the receiver or estimated using random CPM training waveforms. In this work, we propose a novel class of CPM training waveforms displaying autocorrelation sidelobes close to zero. The key idea of our construction is to apply differential encoding to Golay complementary pair having perfect aperiodic autocorrelation sum properties.
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