A Study on Quasi-orthogonal M-ary Chirp Modulation
A Study on Quasi-orthogonal M-ary Chirp Modulation
复制标题
准正交多进制线性调频调制的研究
DOI：
10.1049/cje.2019.06.025
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发表时间：
2019
影响因子：
1.2
通讯作者：
Sha Jiajun
中科院分区：
文献类型：
--
作者：
Yang Liu;Zhang Fangqi;Zheng Guoxin;Sha Jiajun
本文提出并研究了一种采用准正交波形的新型多进制线性调频调制方案。加性高斯白噪声 (AWGN) 信道上的多进制调制的符号错误概率 (SEP) 是基于相干检测导出的，它是调制因子和波形周期的函数。此外，SEP 是在受标称带宽限制的信道上进行研究的。理论分析和仿真都证明，在相同带宽效率的情况下，所提出的 8 进制线性调频调制的 SEP 性能优于传统的 8 相移键控 (8PSK)。
This paper proposes and studies a novel M-ary chirp modulation scheme adopting quasi-orthogonal waveforms. The Symbol error probability (SEP) of M-ary modulation over Additive white Gaussian noise (AWGN) channel is derived based on coherent detection, which is a function of modulation factor and waveform period. Moreover, the SEP is investigated over a channel limited by a nominal bandwidth. Both theoretical analysis and simulations prove that the SEP performance of the proposed 8-ary chirp modulation outperforms that of conventional 8 Phase shift keying (8PSK) with the same bandwidth efficiency.