An overview of VHF civil radio network and the resolution of spectrum depletion

Kamali, Behnam

doi:10.1109/icnsurv.2010.5503256

Cited by 18 publications

(14 citation statements)

References 10 publications

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“…To this end, VHF data link (VDL) schemes with different modes based on digital transmission were developed. They are broadly classified into VDL Mode-2, VDL Mode-3, VDL Mode-4, VDL Mode-E and LDL (L-band Data Link) [19], [36].…”

Section: ) Hf Bandmentioning

confidence: 99%

“…Among them, one of the most underutilized (less than 12.5%) [18] yet anticipating severe spectrum scarcity is the aeronautical spectrum band mainly used for air-ground (A/G) communications. These studies highlight the need to override the static spectrum allocation policies and access more aeronautical frequency bands to outpace the future aviation requirements that demand higher efficiency and better predictability in operations [19].…”

Section: Introductionmentioning

confidence: 99%

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Cognitive Radio for Aeronautical Communications: A Survey

et al. 2016

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Novel Air Traffic Management (ATM) strategies are proposed through the Next Generation Air Transportation (NextGen) and Single European Sky for ATM Research (SESAR) projects to improve the capacity of the airspace and to meet the demands of the future air traffic. The implementation of the proposed solutions leads to increasing use of wireless data for aeronautical communications. Another emerging trend is the unmanned aerial vehicles. The unmanned aerial systems (UASs) need reliable wireless data link and dedicated spectrum allocation for its operation. On-board broadband connectivity also needs dedicated spectrum to satisfy the quality of service (QoS) requirements of the users. With the growing demand, the aeronautical spectrum is expected to be congested. However, the studies revealed that the aeronautical spectrum is underutilized due to the static spectrum allocation strategy. The aeronautical communication systems such as air-air and airground communication systems, inflight infotainment systems, wireless avionics intra-communications (WAIC), and UAS can benefit significantly from the introduction of cognitive radio based transmission schemes. This article summarizes the current trends in aeronautical spectrum management followed by the major applications and contributions of cognitive radio in solving the spectrum scarcity crisis in the aeronautical domain. Also, to cope with the evolving technological advancement, researchers have prioritized the issues in the case of cognitive radio that needs to be addressed depending on the domain of operation. The proposed cognitive aeronautical communication systems should also be compliant with the Aeronautical Radio Incorporated (AR-INC) and Aerospace Recommended Practice (ARP) standards. An overview of these standards and the challenges that need immediate attention to make the solution feasible for a largescale operation, along with the future avenues of research is also furnished.

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Section: ) Hf Bandmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cognitive Radio for Aeronautical Communications: A Survey

et al. 2016

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“…Today's VHF voice-based air-ground communication system for aircraft guidance is suffering from increasing saturation of the VHF band in high density areas [1]. Therefore, the European Union (EU) strives for a sustainable modernization of the aeronautical communication infrastructure.…”

Section: Introductionmentioning

confidence: 99%

L-band Digital Aeronautical Communications System (LDACS) flight trials in the national German project MICONAV

Gräupl

Schneckenburger

Jost

et al. 2018

2018 Integrated Communications, Navigation, Surveillance Conference (ICNS)

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Today's voice-based air-ground communication system for aircraft guidance is suffering from increasing saturation of the VHF band in high density areas. Therefore the European Union strives for a transition from analog voice communication to more spectrum efficient digital communication. This transition shall be realized, among others, through the development and implementation of the L-band Digital Aeronautical Communications System (LDACS). In order to verify the suitability of LDACS for both communications and navigation, a flight trial campaign will be performed within the nationally funded German project MICONAV. The objective of this paper is to present the planned LDACS measurement campaign. LDACS will be validated under realistic conditions: Four ground stations transmit signals; one airborne station onboard an aircraft will receive the communication messages and additionally utilize the signals from the ground stations for navigation.

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“…The current air transportation systems will not be able to cope with this growth, e.g., already Very High Frequency communication capacity is expected to saturate in Europe by 2020-2025 [2]. Meeting these growing demands require efficient air-to-ground communication systems providing various data of airplanes in real-time.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Data-aided Synchronization in L-DACS1 for Aeronautical Communications

Pham

Vinod

Madhukumar

2017

Proceedings of the 2017 International Conference on Data Mining, Communications and Information Technology

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L-band Digital Aeronautical Communication System type-1 (L-DACS1) is an emerging standard that aims at enhancing air traffic management (ATM) by transitioning the traditional analog aeronautical communication systems to the superior and highly efficient digital domain. L-DACS1 employs modern and efficient orthogonal frequency division multiplexing (OFDM) modulation technique to achieve more efficient and higher data rate in comparison to the existing aeronautical communication systems. However, the performance of OFDM systems is very sensitive to synchronization errors. L-DACS1 transmission is in the L-band aeronautical channels that suffer from large interference and large Doppler shifts, which makes the synchronization for L-DACS more challenging. This paper proposes a novel computationally efficient synchronization method for L-DACS1 systems that offers robust performance. Through simulation, the proposed method is shown to provide accurate symbol timing offset (STO) estimation as well as fractional carrier frequency offset (CFO) estimation in a range of aeronautical channels. In particular, it can yield excellent synchronization performance in the face of a large carrier frequency offset.

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An overview of VHF civil radio network and the resolution of spectrum depletion

Cited by 18 publications

References 10 publications

Cognitive Radio for Aeronautical Communications: A Survey

Cognitive Radio for Aeronautical Communications: A Survey

L-band Digital Aeronautical Communications System (LDACS) flight trials in the national German project MICONAV

An Efficient Data-aided Synchronization in L-DACS1 for Aeronautical Communications

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