Abstract—Recent efforts in satellite communication research considered the exploitation of higher... more Abstract—Recent efforts in satellite communication research considered the exploitation of higher frequency bands as a valuable alternative to conventional spectrum portions. An example of this can be provided by the W-band (70-110GHz). Recently, a scientific experiment carried on by the Italian Space Agency (ASI), namely the DAVID-DCE experiment, was aimed at exploring the technical feasibility of the exploitation of the W-band for broadband networking applications. Some preliminary results of DAVID research activities pointed out that phase noise and high Doppler-shift can severely compromise the efficiency of the modulation system, particularly for what concerns the aspects related to the carrier recovery. This problem becomes very critical when the use of spectrally efficient M-ary modulations is considered in order to
Satellite communication systems play an important role in the deployment of a global communicatio... more Satellite communication systems play an important role in the deployment of a global communication infrastructure, and the increasing demand for frequency bands with large bandwidth availability to satisfy satellite communications applications requirements makes the exploration of higher and higher frequency ranges of a vital importance. In this paper, an introduction to the WAVE (W-Band Analysis and VErification) mission is presented, in addition to a general overview of the payload architecture and the related perspective applications and services. WAVE is a new project proposed for the Italian Space Agency (ASI) to design and develop a W-band geostationary payload with the aim of performing the experimental studies of the W-band channel and possible utilization in satellite data communications.
In this paper, an overview of the evolution towards the second phase (A2) of the WAVE (W-band ana... more In this paper, an overview of the evolution towards the second phase (A2) of the WAVE (W-band analysis and verification) project is made, and the timeline for the development of a future pre-operative space mission is defined. This includes the definition of a number of advanced preliminary W-band applications such as the utilization of the M-55 Geophysica manned stratospheric aircraft
... Giorgio Perrotta IMT, Via Bartolomeo Piazza 8, 00161 Rome, Italy e-mail: imtsrl@imtsrl.it Ahm... more ... Giorgio Perrotta IMT, Via Bartolomeo Piazza 8, 00161 Rome, Italy e-mail: imtsrl@imtsrl.it Ahmed Jebril, Marina Ruggieri Dept. of Electronic Engineering, University of Rome 'Tor Vergata' Via del Politecnico 1, 00133 Rome, Italy; e-mail: ruggieri@uniroma2.it ...
Page 1. 1 Perspectives of W-Band for Space Communications Ahmed Jebril1, Marco Lucente1, Emiliano... more Page 1. 1 Perspectives of W-Band for Space Communications Ahmed Jebril1, Marco Lucente1, Emiliano Re1, Tommaso Rossi1, Marina Ruggieri1, Claudio Sacchi2, Vittorio Dainelli3 1 University of Rome Tor Vergata, Dept. ...
Satellite Communications and Navigation Systems, 2008
In 2004 ASI funded phase-A of the WAVE satellite mission, a feasibility study to design and devel... more In 2004 ASI funded phase-A of the WAVE satellite mission, a feasibility study to design and develop a W-band geostationary payload. The aim was to perform experimental studies of the W-band channel and possible utilization in satellite data communications and data-relay services. The next phase of this project will address the experimental-only nature of W-band and the strategic relevance of making investments towards the development of the payload by performing preliminary experiments, such as the Aero-WAVE mission. The Aero-WAVE mission is presented as a basic test to provide the necessary measures leading to the development of the primary mission into GEO orbit. Aero-WAVE is a scientific payload that operates in W-band. It will be embarked on-board a stratospheric platform or High Altitude Platform (HAP) in order to perform a first test of the channel behaviour at an altitude of about 20 km. The stratospheric platform is a high altitude aircraft known as the M-55 Geophysica, a Russian aircraft well known in the atmospheric research environment and the European scientific community since 1996. The M-55 Geophysica will be equipped with the payload instrumentation to carry out the measurements. These measurements and the resulting data provided throughout the Aero-WAVE mission will give good indications of the channel behaviour at different weather conditions and at different locations within the GEO-WAVE coverage.
IEEE Systems Journal, Special Issue on "Recent Advances in Global Navigation and Communication Satellite Systems (GNCSS)", Vol. 2, No. 1, pp. 90-103, Mar 2008
W-band (75-110 GHz) is proposed nowadays as a valuable alternative to intensively-exploited Ku- a... more W-band (75-110 GHz) is proposed nowadays as a valuable alternative to intensively-exploited Ku- and Ka-bands for high-speed transmission over satellite networks. In such a framework, some experiments are being carried out, which are targeted to verify the feasibility of exploitation of W-band for broadband service deployment. From a theoretical viewpoint, the large bandwidth availability and the scarce amount of interference typical of W-band should guarantee high capacities. Nevertheless, many crucial aspects are still to be carefully investigated, e.g., signal propagation issues, RF impairments, choice of modulation and coding, efficient antenna design, etc. In this paper, an overview is made on the low Earth orbit (LEO) nano-satellite mission in-orbit key-test and validation of W-band (IKNOW). IKNOW mission is an ongoing advanced feasibility study part of an Italian Space Agency Project, named W-band analysis and verification (WAVE), coordinated by the Department of Electronic Engineering, University of Rome ldquoTor Vergatardquo. The main objective of the IKNOW mission is to tackle some of the unexplored critical aspects concerning W-band satellite transmission. In such a perspective, IKNOW should be regarded as a ldquopilot mission,rdquo whose results will be used for a first uplink-downlink satellite channel characterization, in-orbit validation of W-band technology, and space qualification processes. This paper is focused on the research work carried out in a preliminary phase of the IKNOW study and will also consider a number of elements related to the mission configuration, payload architecture, link analysis, potential RF impairment factors, and atmospheric effects. Proposed analysis and preliminary results shown can provide to interested readers the basic guidelines that will drive the practical implementation of IKNOW mission, as well as the most relevant issues to be faced by future developers of W-band missions using small LEO satellites.
... IEEE SYSTEMS JOURNAL 1 Experimental Missions in W-Band: A Small LEO Satellite Approach ... In... more ... IEEE SYSTEMS JOURNAL 1 Experimental Missions in W-Band: A Small LEO Satellite Approach ... In this paper, an overview is made on the low Earth orbit (LEO) nano-satellite mission in-orbit key-test and validation of W-band (IKNOW). ...
In 2004 ASI funded phase-A of the WAVE satellite mission, a feasibility study to design and devel... more In 2004 ASI funded phase-A of the WAVE satellite mission, a feasibility study to design and develop a W-band geostationary payload. The aim was to perform experimental studies of the W-band channel and possible utilization in satellite data communications and data-relay services. The next phase of this project will address the experimental-only nature of W-band and the strategic relevance of making investments towards the development of the payload by performing preliminary experiments, such as the Aero-WAVE mission. The Aero-WAVE mission is presented as a basic test to provide the necessary measures leading to the development of the primary mission into GEO orbit. Aero-WAVE is a scientific payload that operates in W-band. It will be embarked on-board a stratospheric platform or High Altitude Platform (HAP) in order to perform a first test of the channel behaviour at an altitude of about 20 km. The stratospheric platform is a high altitude aircraft known as the M-55 Geophysica, a Russian aircraft well known in the atmospheric research environment and the European scientific community since 1996. The M-55 Geophysica will be equipped with the payload instrumentation to carry out the measurements. These measurements and the resulting data provided throughout the Aero-WAVE mission will give good indications of the channel behaviour at different weather conditions and at different locations within the GEO-WAVE coverage.
WAVE (W-Band Analysis and VErification) is a new project proposed for the Italian Space Agency (A... more WAVE (W-Band Analysis and VErification) is a new project proposed for the Italian Space Agency (ASI) to design and develop a W-band geostationary payload aimed at the experimental studies of the W-band channel and possible utilization in satellite data communications. In this paper, an overall description of this mission is presented, in addition to the different atmospheric parameters that affect signal propagation. The overall attenuation at both uplink (81-86 GHz) and downlink (71-76 GHz) frequencies is briefly discussed introducing also the simulation results at the Earth stations of Rome and Spino D'Adda
... Ahmed Jebril: Received his B.Sc. ... She joined FACE-ITT and GTC-ITT (Roanoke, VA) in the Hig... more ... Ahmed Jebril: Received his B.Sc. ... She joined FACE-ITT and GTC-ITT (Roanoke, VA) in the High Frequency Division during (1985-1986); then a Research and Teaching Assistant at the University of Rome Tor-Vergata (1986-1991); Associate Professor in Telecommunications at ...
ABSTRACT This paper presents the payload design for an in orbit test of W band technology called ... more ABSTRACT This paper presents the payload design for an in orbit test of W band technology called IKNOW mission (In orbit Key-test and validatioN Of W band). The increasing demand for frequency bands with large bandwidth availability to satisfy satellite communications applications requirements renders mandatory the need to explore higher and higher frequency ranges. W band (75-110 GHz) could represent the answer to these needs due to the large bandwidth availability, allowing to propose many innovative services that need high-volume transfers. Therefore, the exploitation of W band is foreseen in order to meet the high-quality data transmission for a large number of end users and data-oriented services. The IKNOW mission is a demonstrative experiment foreseen within the phase A2 of the WAVE (W band analysis and verification) project, a study funded by the Italian Space Agency (ASI), which aims at designing and developing W band payloads for telecommunication applications. This paper will be focused on the characterization of the IKNOW mission within the WAVE project devoted to carry out a preliminary channel propagation assessment. Specifically, special attention will be paid to the payload design, particularly critical from the technological point of view at these high frequencies. The basic idea is to develop the receiving/transmitting chain using MMIC devices, in order to fit cost, power and weight constraints, typically limited for a spacecraft. Technological critical items will be highlighted, focusing on the present state of the art and presenting some architectural choices. Moreover, some simulations based on ADS software will be reported in order to simulate the performance of the identified payload configuration.
Abstract—Recent efforts in satellite communication research considered the exploitation of higher... more Abstract—Recent efforts in satellite communication research considered the exploitation of higher frequency bands as a valuable alternative to conventional spectrum portions. An example of this can be provided by the W-band (70-110GHz). Recently, a scientific experiment carried on by the Italian Space Agency (ASI), namely the DAVID-DCE experiment, was aimed at exploring the technical feasibility of the exploitation of the W-band for broadband networking applications. Some preliminary results of DAVID research activities pointed out that phase noise and high Doppler-shift can severely compromise the efficiency of the modulation system, particularly for what concerns the aspects related to the carrier recovery. This problem becomes very critical when the use of spectrally efficient M-ary modulations is considered in order to
Satellite communication systems play an important role in the deployment of a global communicatio... more Satellite communication systems play an important role in the deployment of a global communication infrastructure, and the increasing demand for frequency bands with large bandwidth availability to satisfy satellite communications applications requirements makes the exploration of higher and higher frequency ranges of a vital importance. In this paper, an introduction to the WAVE (W-Band Analysis and VErification) mission is presented, in addition to a general overview of the payload architecture and the related perspective applications and services. WAVE is a new project proposed for the Italian Space Agency (ASI) to design and develop a W-band geostationary payload with the aim of performing the experimental studies of the W-band channel and possible utilization in satellite data communications.
In this paper, an overview of the evolution towards the second phase (A2) of the WAVE (W-band ana... more In this paper, an overview of the evolution towards the second phase (A2) of the WAVE (W-band analysis and verification) project is made, and the timeline for the development of a future pre-operative space mission is defined. This includes the definition of a number of advanced preliminary W-band applications such as the utilization of the M-55 Geophysica manned stratospheric aircraft
... Giorgio Perrotta IMT, Via Bartolomeo Piazza 8, 00161 Rome, Italy e-mail: imtsrl@imtsrl.it Ahm... more ... Giorgio Perrotta IMT, Via Bartolomeo Piazza 8, 00161 Rome, Italy e-mail: imtsrl@imtsrl.it Ahmed Jebril, Marina Ruggieri Dept. of Electronic Engineering, University of Rome 'Tor Vergata' Via del Politecnico 1, 00133 Rome, Italy; e-mail: ruggieri@uniroma2.it ...
Page 1. 1 Perspectives of W-Band for Space Communications Ahmed Jebril1, Marco Lucente1, Emiliano... more Page 1. 1 Perspectives of W-Band for Space Communications Ahmed Jebril1, Marco Lucente1, Emiliano Re1, Tommaso Rossi1, Marina Ruggieri1, Claudio Sacchi2, Vittorio Dainelli3 1 University of Rome Tor Vergata, Dept. ...
Satellite Communications and Navigation Systems, 2008
In 2004 ASI funded phase-A of the WAVE satellite mission, a feasibility study to design and devel... more In 2004 ASI funded phase-A of the WAVE satellite mission, a feasibility study to design and develop a W-band geostationary payload. The aim was to perform experimental studies of the W-band channel and possible utilization in satellite data communications and data-relay services. The next phase of this project will address the experimental-only nature of W-band and the strategic relevance of making investments towards the development of the payload by performing preliminary experiments, such as the Aero-WAVE mission. The Aero-WAVE mission is presented as a basic test to provide the necessary measures leading to the development of the primary mission into GEO orbit. Aero-WAVE is a scientific payload that operates in W-band. It will be embarked on-board a stratospheric platform or High Altitude Platform (HAP) in order to perform a first test of the channel behaviour at an altitude of about 20 km. The stratospheric platform is a high altitude aircraft known as the M-55 Geophysica, a Russian aircraft well known in the atmospheric research environment and the European scientific community since 1996. The M-55 Geophysica will be equipped with the payload instrumentation to carry out the measurements. These measurements and the resulting data provided throughout the Aero-WAVE mission will give good indications of the channel behaviour at different weather conditions and at different locations within the GEO-WAVE coverage.
IEEE Systems Journal, Special Issue on "Recent Advances in Global Navigation and Communication Satellite Systems (GNCSS)", Vol. 2, No. 1, pp. 90-103, Mar 2008
W-band (75-110 GHz) is proposed nowadays as a valuable alternative to intensively-exploited Ku- a... more W-band (75-110 GHz) is proposed nowadays as a valuable alternative to intensively-exploited Ku- and Ka-bands for high-speed transmission over satellite networks. In such a framework, some experiments are being carried out, which are targeted to verify the feasibility of exploitation of W-band for broadband service deployment. From a theoretical viewpoint, the large bandwidth availability and the scarce amount of interference typical of W-band should guarantee high capacities. Nevertheless, many crucial aspects are still to be carefully investigated, e.g., signal propagation issues, RF impairments, choice of modulation and coding, efficient antenna design, etc. In this paper, an overview is made on the low Earth orbit (LEO) nano-satellite mission in-orbit key-test and validation of W-band (IKNOW). IKNOW mission is an ongoing advanced feasibility study part of an Italian Space Agency Project, named W-band analysis and verification (WAVE), coordinated by the Department of Electronic Engineering, University of Rome ldquoTor Vergatardquo. The main objective of the IKNOW mission is to tackle some of the unexplored critical aspects concerning W-band satellite transmission. In such a perspective, IKNOW should be regarded as a ldquopilot mission,rdquo whose results will be used for a first uplink-downlink satellite channel characterization, in-orbit validation of W-band technology, and space qualification processes. This paper is focused on the research work carried out in a preliminary phase of the IKNOW study and will also consider a number of elements related to the mission configuration, payload architecture, link analysis, potential RF impairment factors, and atmospheric effects. Proposed analysis and preliminary results shown can provide to interested readers the basic guidelines that will drive the practical implementation of IKNOW mission, as well as the most relevant issues to be faced by future developers of W-band missions using small LEO satellites.
... IEEE SYSTEMS JOURNAL 1 Experimental Missions in W-Band: A Small LEO Satellite Approach ... In... more ... IEEE SYSTEMS JOURNAL 1 Experimental Missions in W-Band: A Small LEO Satellite Approach ... In this paper, an overview is made on the low Earth orbit (LEO) nano-satellite mission in-orbit key-test and validation of W-band (IKNOW). ...
In 2004 ASI funded phase-A of the WAVE satellite mission, a feasibility study to design and devel... more In 2004 ASI funded phase-A of the WAVE satellite mission, a feasibility study to design and develop a W-band geostationary payload. The aim was to perform experimental studies of the W-band channel and possible utilization in satellite data communications and data-relay services. The next phase of this project will address the experimental-only nature of W-band and the strategic relevance of making investments towards the development of the payload by performing preliminary experiments, such as the Aero-WAVE mission. The Aero-WAVE mission is presented as a basic test to provide the necessary measures leading to the development of the primary mission into GEO orbit. Aero-WAVE is a scientific payload that operates in W-band. It will be embarked on-board a stratospheric platform or High Altitude Platform (HAP) in order to perform a first test of the channel behaviour at an altitude of about 20 km. The stratospheric platform is a high altitude aircraft known as the M-55 Geophysica, a Russian aircraft well known in the atmospheric research environment and the European scientific community since 1996. The M-55 Geophysica will be equipped with the payload instrumentation to carry out the measurements. These measurements and the resulting data provided throughout the Aero-WAVE mission will give good indications of the channel behaviour at different weather conditions and at different locations within the GEO-WAVE coverage.
WAVE (W-Band Analysis and VErification) is a new project proposed for the Italian Space Agency (A... more WAVE (W-Band Analysis and VErification) is a new project proposed for the Italian Space Agency (ASI) to design and develop a W-band geostationary payload aimed at the experimental studies of the W-band channel and possible utilization in satellite data communications. In this paper, an overall description of this mission is presented, in addition to the different atmospheric parameters that affect signal propagation. The overall attenuation at both uplink (81-86 GHz) and downlink (71-76 GHz) frequencies is briefly discussed introducing also the simulation results at the Earth stations of Rome and Spino D'Adda
... Ahmed Jebril: Received his B.Sc. ... She joined FACE-ITT and GTC-ITT (Roanoke, VA) in the Hig... more ... Ahmed Jebril: Received his B.Sc. ... She joined FACE-ITT and GTC-ITT (Roanoke, VA) in the High Frequency Division during (1985-1986); then a Research and Teaching Assistant at the University of Rome Tor-Vergata (1986-1991); Associate Professor in Telecommunications at ...
ABSTRACT This paper presents the payload design for an in orbit test of W band technology called ... more ABSTRACT This paper presents the payload design for an in orbit test of W band technology called IKNOW mission (In orbit Key-test and validatioN Of W band). The increasing demand for frequency bands with large bandwidth availability to satisfy satellite communications applications requirements renders mandatory the need to explore higher and higher frequency ranges. W band (75-110 GHz) could represent the answer to these needs due to the large bandwidth availability, allowing to propose many innovative services that need high-volume transfers. Therefore, the exploitation of W band is foreseen in order to meet the high-quality data transmission for a large number of end users and data-oriented services. The IKNOW mission is a demonstrative experiment foreseen within the phase A2 of the WAVE (W band analysis and verification) project, a study funded by the Italian Space Agency (ASI), which aims at designing and developing W band payloads for telecommunication applications. This paper will be focused on the characterization of the IKNOW mission within the WAVE project devoted to carry out a preliminary channel propagation assessment. Specifically, special attention will be paid to the payload design, particularly critical from the technological point of view at these high frequencies. The basic idea is to develop the receiving/transmitting chain using MMIC devices, in order to fit cost, power and weight constraints, typically limited for a spacecraft. Technological critical items will be highlighted, focusing on the present state of the art and presenting some architectural choices. Moreover, some simulations based on ADS software will be reported in order to simulate the performance of the identified payload configuration.
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