Location-Aware and Superimposed-Pilot Based Channel Estimation of Sparse HAP Radio Communication Channels

Nawaz, Syed Junaid; Mansoor, Babar; Sharma, Shree Krishna; Gulfam, Sardar Muhammad; Patwary, Mohammad

doi:10.1109/vtcspring.2017.8108354

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…Another work [16] suggested a superimposed pilot (SiP) sequence-based channel estimation strategy for beamforming to help multi-antenna HAP arrive versatile radio communication frameworks [17,18]. The proposed strategy misused the initially accessible data of users' spatial area and thickness and a beamwidth of HAP directional receiving wire.…”

Section: Introduction 1backgroundmentioning

confidence: 99%

An Efficient HAPS Cross-Layer Design to Mitigate COVID-19 Consequences

Alsharif¹,

Saeed²,

Albagory³

2022

Intelligent Automation &Amp; Soft Computing

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This paper proposes a new cross-layer communication system for the provision of Internet services and applications to mitigate the negative impacts of COVID-19, due to which the massive online demands are affecting the current communication systems' infrastructures and capabilities. The system requirements and model are investigated where it utilizes high-altitude platform (HAP) for fast and efficient connectivity provision to bridge the communication infrastructure gap in the current pandemic. The HAP is linked to the main server or gateway station located on ground and can provide communication narrow beams towards isolated areas which suffer from poor terrestrial radio coverage or lack of communication infrastructure. The vital e-learning applications using Internet services provision from the proposed HAP system are described and modelled including system adaptation parameters such as the application and physical layers to control the data rates of different e-learning applications and the overall cell data rate. On the other hand, the provision of high-speed Internet services from the proposed system is supported by using adaptive antenna arrays onboard HAP which provides high-gain beams to achieve the required high-quality transmission data rates at the student premises and provides the capability of coverage cell area adaptation for load balancing. The concentric circular antenna arrays with tapered feeding are proposed in this adaptive antenna system to control the cell mainlobe gain and reduce the out-of-coverage radiation as well. In addition, the system feasibility has been proved in two coverage scenarios including single-beam and multibeam HAP communications.

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Section: Introduction 1backgroundmentioning

confidence: 99%