提高主要用户多功率水平认知无线电系统的吞吐量

Shabnam Khomejani, A. Nallanathan, H. Nguyen, H. Aghvami
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引用次数: 1

摘要

在[1]中,与使用带有周期性感知的帧结构的传统认知无线电(CR)系统相比,引入了一种新的帧结构来提高吞吐量和频谱感知能力。然而,尽管可以考虑在CR系统中仅为主用户(pu)使用两级功率,但由于pu通常使用多级功率传输,因此可能不实际。因此,在本文中,我们提出了一种新的CR系统,以适应多级主传输功率,同时通过使用在一个时隙内同时提供频谱感知和数据传输的新帧结构来提高系统的整体吞吐量。最后,通过计算机仿真验证了所提系统的性能改进。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Enhancing throughput of cognitive radio system with multiple power levels for primary users
In [1], a new frame structure is introduced to improve throughput and spectrum sensing capabilities compared to conventional cognitive radio (CR) systems that use the frame structure with a periodic sensing. However, even though employing two levels of power only for primary users (PUs) can be considered for CR systems, it may not be practical as the PUs often transmit with multiple levels of power. Thus, in this paper, we propose a new CR system to accommodate multiple levels of the primary transmission power and, at the same time, improve overall system throughput by using the new frame structure that provides spectrum sensing and data transmission at the same time within one time slot. Finally, computer simulation is used to validate the performance improvement of the proposed system.
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