论文标题
无湍流光学无线通信渠道中的空间频率跳跃指数调制方案
A Spatial Time-Frequency Hopping Index Modulated Scheme in Turbulence-free Optical Wireless Communication Channels
论文作者
论文摘要
在本文中，我们提出了一个适用于光学通信的索引调制系统，其中光的强度沿时间，空间和频率尺寸调节，建立一个频率跳动的空间多脉冲位置调制（FH-SMPPM）。我们从功率和频谱效率的角度分析了其性能，以及其实施复杂性和所需的接收器延迟。在非扰动的自由空间光学通道（FSO）的情况下，我们分析了其误差概率。我们为平均符号和位误差概率得出公式，模拟结果表明，它们足够紧张，足以达到广泛的信噪比和系统参数。我们将FH-SMPPM与其他相同性质的索引调制系统进行了比较，并强调了其独特的优势，例如在不同的约束和目标下构建适当波形的灵活性。此外，FH-SMPPM表明在BER/SER和/或相对于这些替代方案的效率方面表现更好，因此提供了各种情况下采用的可能性。
In this article, we propose an index modulation system suitable for optical communications, where the intensity of the light is modulated along the time, space and frequency dimensions, building a Frequency-Hopping Spatial Multi-Pulse Position Modulation (FH-SMPPM). We analyze its performance from the point of view of its efficiency in power and spectrum, and its implementation complexity and required receiver latency. We analyze its error probability in the case of the non-turbulent free-space optical (FSO) channel. We derive formulas for the average symbol and bit error probabilities, and the simulation results show that they are tight enough for a wide range of signal-to-noise ratios and system parameters. We compare FH-SMPPM with other proposed index modulated systems of the same nature, and we highlight its distinctive advantages, like the flexibility to build an appropriate waveform under different constraints and objectives. Moreover, FH-SMPPM shows to be better performing in BER/SER and/or offer advantages in efficiency with respect to those alternatives, thus offering the possibility to be adopted for a variety of contexts.
