Resource allocation for cognitive Satellite Communications in Ka-band (17.7-19.7 GHz)
نویسندگان
چکیده
In this paper, we consider the problem of resource allocation in the context of cognitive Satellite Communications (SatCom). In particular, we focus on the cognitive downlink access by Geostationary (GEO) Fixed Satellite Service (FSS) terminals in the band 17.7-19.7 GHz, where the incumbent users are Fixed-Service (FS) microwave links. Assuming a multiple Low Noise Block Converter (LNB) satellite receiver at the cognitive FSS terminal-side, an efficient receive beamforming technique combined with carrier allocation is proposed in order to maximize the overall downlink throughput as well as to improve the beam availability. The proposed cognitive exploitation framework allows the flexibility of using non-exclusive spectrum for the FSS downlink system, thus improving the overall system throughput. More importantly, the proposed approach is validated with the help of numerical results considering realistic system parameters. Keywords—Cognitive SatCom, Carrier Allocation, Beamforming, Resource Allocation, Ka-band
منابع مشابه
Joint Carrier Allocation and Beamforming for cognitive SatComs in Ka-band (17.3-18.1 GHz)
Herein, we study the spectral coexistence of Geostationary (GEO) Fixed Satellite Services (FSS) downlink and Broadcasting Satellite Services (BSS) feeder links in the Ka-band (17.3 − 18.1 GHz) which is primarily allocated for BSS feeder links. Firstly, a novel cognitive spectrum exploitation framework is proposed in order to utilize the available band efficiently. Subsequently, based on the int...
متن کاملSpectrum Database for Coexistence of Terrestrial Fs and Fss Satellite Systems in the 17.7-19.7 Ghz Band
In this article we develop a database-based spectrum access for the Ka band, allowing fixed satellite services (FSS) receivers to coexist with the terrestrial fixed services (FS) system, thus increasing the downlink capacity of the satellite system. The main focus of this paper is to study FS interference to FSS user terminal receivers in the 17.7-19.7 GHz band as the interference from FSS to F...
متن کاملMulti-Objective Reinforcement Learning for Cognitive Radio–Based Satellite Communications
Previous research on cognitive radios has addressed the performance of various machinelearning and optimization techniques for decision making of terrestrial link properties. In this paper, we present our recent investigations with respect to reinforcement learning that potentially can be employed by future cognitive radios installed onboard satellite communications systems specifically tasked ...
متن کاملExtending the Spectrum for Ka-band Satellite Systems by Use of the Shared Bands
The spectrum available in the exclusive Ka-bands has been shown to be insufficient to meet the demands of broadband access by satellite post 2020. This paper presents the work of the FP7 project CoRaSat in validating the use of the extra spectrum in the shared Ka bands for use by satellite. It is demonstrated that in the 17.3 to 17.7GHz band shared with Broadcasting Satellite Service (BSS) feed...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2015