Implementing a mobility architecture for a Regenerative Satellite Mesh Architecture (RSM-A) system a SPACEWAY&amp;#x2122; perspective

Arnold, Steven; Noerpel, A.R.; Gopal, Rajeev; Chandrasekharan, Sathyanarayanan

doi:10.1109/milcom.2008.4753470

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…Additional benefits can be gained by supporting high data rate satellite communication‐on‐the‐move (COTM) which is now becoming available for the transponded satellites 13. An RSM‐A COTM solution 29 would require transmission and link layer adaptations in the ground segment for Doppler correction and continuous tracking using GPS and other mechanisms.…”

Section: Discussionmentioning

confidence: 99%

Asymmetric Retro‐Henry Reaction Catalyzed by Hydroxynitrile Lyase from Hevea brasiliensis

et al. 2010

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Hydroxynitrile lyase from Hevea brasiliensis (HbHNL) is a promiscuous biocatalyst that, besides the native cyanohydrin reaction, also catalyzes the asymmetric Henry reaction yielding (S)‐β‐nitroalcohols with high enantiomeric excess. Since the Henry reaction is reversible, the enzyme can be also utilized for the production (R)‐enantiomers by means of resolution of racemic β‐nitroalcohols. Herein the biocatalytic retro‐Henry reaction is studied using the cleavage of 2‐nitro‐1‐phenylethanol as a model system. The main problem that prevents high levels of conversion or high ee values during the cleavage of the β‐nitroalcohol is the formation of benzaldehyde, which is known to be a strong enzyme inhibitor. The product inhibition is overcome by performing the biocatalytic retro‐Henry reaction in the presence of HCN, which reacts in situ with benzaldehyde and converts it to the less‐inhibitive mandelonitrile. By using such a reaction cascade, it was possible to conduct the resolution practically to completion (95 % ee, 49 % conversion). Furthermore, the catalyst productivity achieved during the resolution was ten times higher than that in the HbHNL‐catalyzed synthesis of (S)‐2‐nitro‐1‐phenylethanol by condensation of benzaldehyde and nitromethane.

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Section: Discussionmentioning

confidence: 99%

Asymmetric Retro‐Henry Reaction Catalyzed by Hydroxynitrile Lyase from Hevea brasiliensis

et al. 2010

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“…The use of regenerative payload has been addressed in [4], while semi regenerative payloads have been considered in [5], [6], [7]. In [8] different architectures for mesh satellite networking have been designed providing link budgets and setting up the framework for a detailed analysis of the waveforms performance in mesh systems reported in this paper.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a mesh satellite system based on linear and continuous phase modulations

Baroni

Lombardo

Suffritti³

et al. 2012

2012 IEEE International Conference on Communications (ICC)

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Net‐centric satellite mesh architecture for emergency communication

Gopal

2010

Satell Commun Network

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SUMMARYThis paper introduces a net-centric architecture based on ETSI and TIA Regenerative Satellite Mesh-A (RSM-A) standard that uses satellites with on-board packet switching. An Internet Engineering Task Force (IETF) IP protocol family-based extension of RSM-A for enhanced user interoperability, combined with multiple spot beam satellite implementation facilitates higher capacity, easy deployment and full mesh terminal-to-terminal operation that is required for managing emergency situations. This Net-centric Satellite Mesh (NSM) architecture adequately addresses the current and evolving networking needs for emergency-management information systems that can generate high data rate and real-time multi-media traffic. The NSM architecture supports the evolving IETF Emergency Telecommunications Service standards with packet flow-level admission control for guaranteed packet quality-of-service needed by real-time unicast and multicast traffic over satellite networks. The multi-plane architectural discussion is supported with measurements of selected end-to-end application behavior that validate the technical capabilities of NSM by using a pioneering Ka band satellite system, based on RSM-A, which has recently been deployed in North America.

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Implementing a mobility architecture for a Regenerative Satellite Mesh Architecture (RSM-A) system a SPACEWAY™ perspective

Cited by 7 publications

References 2 publications

Asymmetric Retro‐Henry Reaction Catalyzed by Hydroxynitrile Lyase from Hevea brasiliensis

Asymmetric Retro‐Henry Reaction Catalyzed by Hydroxynitrile Lyase from Hevea brasiliensis

Performance analysis of a mesh satellite system based on linear and continuous phase modulations

Net‐centric satellite mesh architecture for emergency communication

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