认知上行卫星系统的一些功率分配算法。

IF 2.3 4区 计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Arthur Louchart, Ehsan Tohidi, Philippe Ciblat, David Gesbert, Eva Lagunas, Charly Poulliat
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引用次数: 0

摘要

认知卫星通信(SatCom)作为一种有前途的技术,正在迅速崛起,以克服独家授权频带模型的稀缺性,以满足日益增长的高数据速率业务需求。本文采用认知无线电范式,研究了与ka波段地面网络共存的多运营商多波束上行卫星通信系统的功率分配方法。这种情况尤其具有挑战性,因为:(1)在认知频带上共存的多个卫星通信运营商需要在有限的运营商间信息交换下协调其资源的使用;(2)非线性板载高功率放大器(HPA)导致用户和波束之间的非线性干扰。为了解决第一个挑战,我们提出了分布式功率分配算法,包括标准的备用方向乘数法(ADMM);针对HPA的非线性损伤,提出了基于信号规划的非线性感知功率分配方法。建议的解决方案在这两种情况下都优于最先进的技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Some power allocation algorithms for cognitive uplink satellite systems.

Some power allocation algorithms for cognitive uplink satellite systems.

Some power allocation algorithms for cognitive uplink satellite systems.

Some power allocation algorithms for cognitive uplink satellite systems.

Cognitive satellite communication (SatCom) is rapidly emerging as a promising technology to overcome the scarcity of the exclusive licensed band model in order to fulfill the increasing demand for high data rate services. The paper addresses power allocation methods for multi-operator multi-beam uplink satellite communication systems co-existing with a Ka-band terrestrial network, using cognitive radio paradigm. Such a scenario is especially challenging because of (i) the coexisting multiple SatCom operators over the cognitive band need to coordinate the use of their resources under limited inter-operator information exchange, and (ii) nonlinear onboard high power amplifier (HPA) which leads to nonlinear interference between users and beams. In order to tackle the first challenge, we propose distributed power allocation algorithms including the standard Alternate Direction Multiplier Method (ADMM); Regarding the HPA nonlinear impairment, we propose nonlinear-aware power allocation based on Signomial Programming. The proposed solutions outperform state-of-the-art in both cases.

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来源期刊
CiteScore
7.70
自引率
3.80%
发文量
109
审稿时长
8.0 months
期刊介绍: The overall aim of the EURASIP Journal on Wireless Communications and Networking (EURASIP JWCN) is to bring together science and applications of wireless communications and networking technologies with emphasis on signal processing techniques and tools. It is directed at both practicing engineers and academic researchers. EURASIP Journal on Wireless Communications and Networking will highlight the continued growth and new challenges in wireless technology, for both application development and basic research. Articles should emphasize original results relating to the theory and/or applications of wireless communications and networking. Review articles, especially those emphasizing multidisciplinary views of communications and networking, are also welcome. EURASIP Journal on Wireless Communications and Networking employs a paperless, electronic submission and evaluation system to promote a rapid turnaround in the peer-review process. The journal is an Open Access journal since 2004.
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