Influence of White LO Noise on Wideband Communication
Influence of White LO Noise on Wideband Communication
复制标题
本振白噪声对宽带通信的影响
DOI：
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发表时间：
2018
影响因子：
4.3
通讯作者：
H. Zirath
中科院分区：
文献类型：
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作者：
Jingjing Chen;D. Kuylenstierna;S. Gunnarsson;Z. He;T. Eriksson;T. Swahn;H. Zirath
对宽带信号应用频谱高效调制在毫米波通信中提供极高的数据速率潜力。实际上，如公开文献中所报道的，宽带系统通常遭受不足的信噪比（SNR），并且因此不能够支持高阶调制。在最近的一项实验研究中，我们已经确定，一个高的本底噪声从倍频本地振荡器（LO）源是一个主要的数据速率限制在宽带系统。在本文中，我们提出了一个详细的研究与数学模型来描述本振噪声对通信信号的影响，通过频率转换。其次是实验研究，使用多千兆位64正交幅度调制信号，测量进行频率上和下转换。这两种情况都表明，随着相应的LO噪声基底增加，变频信号的SNR会下降。我们提供了实验证明，本振噪声本底的性质是白色，几乎相同数量的相位和幅度噪声。文中讨论了通过新硬件设计降低白色LO本底噪声的各种方法，并提供了设计要求和考虑因素。
Applying a spectrally efficient modulation to a wideband signal provides an extremely high data rate potential in millimeter-wave communication. In reality, wideband systems, as reported in open literature, typically suffer from insufficient signal-to-noise ratio (SNR) and thus are not able to support high-order modulation. In a recent experimental study, we have identified that a high noise floor from frequency-multiplied local oscillator (LO) sources is a major data rate limitation in wideband systems. In this paper, we present a detailed study with a mathematical model to describe the influence of the LO noise on a communication signal through frequency conversion. Followed by experimental investigations using multigigabit 64-quadrature amplitude modulation signals, measurements are performed at frequency up- and down-conversions. Both cases show SNR degradation on the frequency-converted signals as the corresponding LO noise floor increases. We provide experimental proof that the nature of the LO noise floor is white, with nearly the same amount of phase and amplitude noises. Various ways to reduce the white LO noise floor through the new hardware design are discussed providing design requirements and considerations.
DOI：
10.1109/irmmw-thz.2014.6956202
发表时间：
2014-11
期刊：
2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)
影响因子：
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作者：
F. Boes;T. Messinger;J. Antes;D. Meier;A. Tessmann;A. Inam;I. Kallfass
通讯作者：
F. Boes;T. Messinger;J. Antes;D. Meier;A. Tessmann;A. Inam;I. Kallfass