论文标题
紫外线通信的同步序列的设计和优化
The design and optimization of synchronization sequence for Ultraviolet communication
论文作者
论文摘要
在紫外线（UV）散射通信中，接收的信号表现出由于路径损失而导致的离散光电子的特征。同步基于最大脉冲数 - 序列相关问题。首先，同步的准确性对于通道估计和解码至关重要。本文着重于通过设计和优化同步序列来提高同步精度。至于最大脉冲数 - 序列相关问题，假定相关值满足高斯分布及其数学期望，方差和协方差，以表达同步偏移的上限。我们设计的同步序列具有两个等式的随机零件（符号符合Bernoulli分布的概率相同）和$ \ {1,0,1,0,0,1,0，...，1,0,1,1,0 \} $之间的$α$之间的零件是整个序列的比例。在确保同步可靠性的前提下，可以通过优化$α$来降低同步偏差。 有模拟实验可以验证推导的正确性，假设的合理性和优化的可靠性。与平衡随机序列相比，优化同步序列的同步精度得到显着提高。
In the ultraviolet (UV) scattering communication, the received signals exhibit the characteristics of discrete photoelectrons due to path loss. The synchronization is based on maximum Pulse Number-Sequence correlation problem. First of all, the accuracy of synchronization is vital to channel estimation and decoding. This article focuses on improving synchronization accuracy by designing and optimizing synchronization sequences. As for the maximum Pulse Number-Sequence correlation problem, it is assumed that the correlation values satisfy the Gaussian distribution and their mathematical expectation, variance and covariance are derived to express the upper bound of synchronization offset. The synchronization sequence we designed has two equilong RANDOM parts (Symbols meet Bernoulli distribution with equal probability.) and a $\{1,0,1,0,1,0,...,1,0,1,0\}$ part between them with $ α$ as its proportion of entire sequence. On the premise of ensuring the synchronization reliability, the synchronization deviation can be reduced by optimizing $ α$. There are simulation experiments to verify correctness of the derivation, reasonableness of the hypothesis and reliability of optimization. Compared with equilong random sequence, the synchronization accuracy of the optimized synchronization sequence is significantly improved.
