arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1401.6437cs.ITmath.IT
收藏

全双工通信系统中相位噪声的抑制

On Phase Noise Suppression in Full-Duplex Systems

Elsayed Ahmed, Ahmed M. Eltawil

摘要:

振荡器相位噪声已被证明是全双工系统中的主要性能限制因素之一。在本文中,我们考虑的问题,自干扰消除相位噪声抑制全双工系统。分析和实验研究了在全双工系统中进行相位噪声抑制的可行性,包括复杂性和增益。首先,相位噪声对全双工系统的影响和执行相位噪声抑制的可能性进行了研究。然后提出了两种不同的相位噪声抑制技术,并进行了详细的复杂性分析。对于每种抑制技术,都考虑了基于自激和锁相环的振荡器。由于全双工系统性能高度依赖于硬件损伤,因此实验分析对于可靠的结果至关重要。在本文中,所提出的技术的性能进行了实验研究,在一个典型的室内环境。实验结果证实了从两个不同的实验研究平台上的数值模拟得到的结果。最后,讨论了所需的复杂度和使用相位噪声抑制实现的增益之间的权衡。

英文摘要:

Oscillator phase noise has been shown to be one of the main performance limiting factors in full-duplex systems. In this paper, we consider the problem of self-interference cancellation with phase noise suppression in full-duplex systems. The feasibility of performing phase noise suppression in full-duplex systems in terms of both complexity and achieved gain is analytically and experimentally investigated. First, the effect of phase noise on full-duplex systems and the possibility of performing phase noise suppression are studied. Two different phase noise suppression techniques with a detailed complexity analysis are then proposed. For each suppression technique, both free-running and phase locked loop based oscillators are considered. Due to the fact that full-duplex system performance highly depends on hardware impairments, experimental analysis is essential for reliable results. In this paper, the performance of the proposed techniques is experimentally investigated in a typical indoor environment. The experimental results are shown to confirm the results obtained from numerical simulations on two different experimental research platforms. At the end, the tradeoff between the required complexity and the gain achieved using phase noise suppression is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑