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

Pham, Thinh Hung; Vinod, A. P.; Madhukumar, A. S.

doi:10.1145/3089871.3089892

Cited by 5 publications

(5 citation statements)

References 10 publications

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“…Recently, few works dealing with the design and implementation of OFDM-based LDACS transceiver have been proposed [5,13,30,31,38,39]. In [30], novel correlation based synchronization approach for large carrier frequency offsets has been introduced, and its implementation on field programmable gate arrays (FPGA) has shown to consume lower area and power without compromising on the BER performance [31]. In [38], the design of LDACS transceiver via partial reconfiguration approach of the FPGA has been proposed.…”

Section: Literature Reviewmentioning

confidence: 99%

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New Spectrum Efficient Reconfigurable Filtered-OFDM Based L-Band Digital Aeronautical Communication System

Agrawal

Darak

Bader

2019

IEEE Trans. Aerosp. Electron. Syst.

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To meet an ever-increasing demand of the spectrum for aeronautical communication, we propose new L-band digital aeronautical communication system (LDACS) using reconfigurable filtered OFDM (Ref-OFDM). The proposed protocol enables transceivers to dynamically adapt the transmission bandwidth over a wide range to meet the desired quality of service, and high out-of-band attenuation leads to significant improvement in the vacant spectrum utilization. We support our claims via simulation and complexity comparison results for various realistic channel conditions.

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Section: Literature Reviewmentioning

confidence: 99%

“…Most of the existing works [5,10,30,31,38,39] deal with the improving the performance of the OFDM based LDACS.…”

Section: Literature Reviewmentioning

confidence: 99%

New Spectrum Efficient Reconfigurable Filtered-OFDM Based L-Band Digital Aeronautical Communication System

Agrawal

Darak

Bader

2019

IEEE Trans. Aerosp. Electron. Syst.

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“…The implementation of various blocks in the conventional OFDM based LDACS on homogeneous platforms such as field programmable gate arrays (FPGA) or application specific integration circuits (ASIC) have been discussed in [10][11][12][13][14][15]. The major focus of these works was strictly on the synchronization and channel estimation techniques for LDACS environment.…”

Section: Literature Reviewmentioning

confidence: 99%

“…The major focus of these works was strictly on the synchronization and channel estimation techniques for LDACS environment. In [10], novel correlation based synchronization approach for large carrier frequency offsets is proposed, and its implementation on the FPGA has shown to consume lower area and power without compromising on the BER performance [11]. In [12], partial reconfiguration capability of the FPGA is used to design flexible LDACS transceiver.…”

Section: Literature Reviewmentioning

confidence: 99%

Spectral Coexistence of LDACS and DME: Analysis via Hardware Software Co-Design in Presence of Real Channels and RF Impairments

Agrawal¹,

Darak²,

Bader³

2019

Preprint

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To meet the exponentially increasing air traffic, Lband (960-1164 MHz) digital aeronautical communication system (LDACS) has been introduced. The LDACS aims to exploit vacant spectrum between incumbent Distance Measuring Equipment (DME) signals and envisioned to follow multi-carrier waveform approach to support high-speed delay-sensitive multimedia services. This paper deals with the design and implementation of end-to-end LDACS transceiver on Zynq System on Chip (ZSoC) platform, consisting of FPGA as programmable logic (PL) and ARM as processing system (PS). We consider orthogonal frequency division multiplexing (OFDM) based LDACS and improve it further using windowing and/or filtering. We propose hardware software co-design approach and analyze various transceiver configurations by dividing it into PL and PS. We demonstrate the flexibility offered by such co-design approach to choose the configuration as well as word-length for a given area, delay and power constraints. The transceiver is also integrated with the programmable analog front-end to validate its functionality in the presence of various RF impairments and wireless channels and interference specific to the LDACS environment. To the best of our knowledge, this is the first ever in-depth analysis of the performance of end-to-end LDACS transceiver concerning parameters such as out-of-band attenuation, DME interference, bit-error-rate, word-length, area, delay, and power.

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“…Recently, few works dealing with the design and implementation of OFDM-based LDACS transceiver has been proposed in [22,23,[33][34][35]. A hardware architecture of a novel synchronization method for LDACS in [33].…”

Section: Hardware Implementationmentioning

confidence: 99%

New Reconfigurable L-Band Digital Aeronautical Communication System

Agrawal

2018

Preprint

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The Air Traffic Management (ATM) system handles the communication between the aircrafts and between aircraft and ground terminals in the controlled airspace. Existing ATM system can support low data rate services and fewer communication links due to limited bandwidth. To meet the spectrum demand of ever-increasing air traffic and enable a variety of services to support different phases of flight, international civil aviation organization (ICAO)proposed Future Communication Infrastructure (FCI) system. It consists of several communication data links between satellite stations, aircraft and ground terminals. Such FCI system is also used for other Communications, Navigation, and Surveillance (CNS) applications. The work presented in this report focuses on the air-to-ground and air-to-air communication links which are the most important data links of the FCI system. Recently, L−band (960-1164 MHz) has been identified for FCI and corresponding system is also referred to as L−band (960-1164 MHz) Digital Aeronautical Communication System (LDACS). The LDACS is based on opportunistic spectrum access based inlay approach over multiple 1 MHz available frequency bands between incumbent distance measuring equipment (DME) signals in L-band. The existing OFDM based LDACS has fixed transmission bandwidth of 498 KHz due to the high out-of-band emission of OFDM and hence, cannot adapt the transmission bandwidth as per the desired service and deployment. This leads to less than 50% vacant spectrum utilization and limits the usefulness for other CNS applications. Publications Journals J1. N. Agrawal, S.J. Darak and Faouzi bader "New Reconfigurable L-Band Digital aeronautical Communication System,"submitted in IEEE Transactions on Aerospace and Electronic Systems, March 2017 (Revision).

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

Cited by 5 publications

References 10 publications

New Spectrum Efficient Reconfigurable Filtered-OFDM Based L-Band Digital Aeronautical Communication System

New Spectrum Efficient Reconfigurable Filtered-OFDM Based L-Band Digital Aeronautical Communication System

Spectral Coexistence of LDACS and DME: Analysis via Hardware Software Co-Design in Presence of Real Channels and RF Impairments

New Reconfigurable L-Band Digital Aeronautical Communication System

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