Results 221 to 230 of about 34,233 (259)
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Constellation Design for Quadrature Spatial Modulation
2017 IEEE 86th Vehicular Technology Conference (VTC-Fall), 2017This paper considers constellation design for quadrature spatial modulation (QSM) to minimize the average probability of error. Different than the constellation design previously obtained for spatial modulation (SM), it is shown that, the error performance of QSM not only depends on the Euclidean distances between the amplitude-phase modulation (APM ...
Binh T. Vo +2 more
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Systematic design of unitary space-time constellations
IEEE Transactions on Information Theory, 2000Summary: We propose a systematic method for creating constellations of unitary space-time signals for multiple-antenna communication links. Unitary space-time signals, which are orthonormal in time across the antennas, have been shown to be well tailored to a Rayleigh fading channel where neither the transmitter nor the receiver knows the fading ...
Hochwald, B. +4 more
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Constellation Design With Hypercube Graphs
IEEE Signal Processing Letters, 2023Kumar Vijay Mishra +2 more
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Design of multidimensional signal constellations
IEE Proceedings - Communications, 2003An algorithmic technique intended for signal constellation design for an N-dimensional Euclidean signal space is presented. Such signals are used for reliable and efficient digital communications on an additive white Gaussian noise channel. The minimum Euclidean distance between signals and the constellation-constrained capacity are used as performance
J.-E. Porath, T. Aulin
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Mission Design of the ORBCOMM Constellation
1998ORBCOMM is the first LEO commercial communications satellite to reach orbit and begin service. Offering paging, messaging, and data transfer services, the first two of the thirty-six member constellation were launched in April 1995. Two additional satellites are scheduled for a Taurus launch in late 1997, and subsequent Pegasus XL launches will carry ...
Maria J. Evans, Timothy D. Maclay
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A Novel Design for Geometric Constellation Shaping
2023 IEEE Globecom Workshops (GC Wkshps), 2023Yinhua Jia +5 more
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LEO navigation augmentation constellation design with the multi-objective optimization approaches
Chinese Journal of Aeronautics, 2021Ruizhi Chen, Tao Li, Wenju Fu
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Autonomous interplanetary constellation design
2012According to NASA?s integrated space technology roadmaps, space-based infrastructures are envisioned as necessary ingredients to a sustained effort in continuing space exploration. Whether it be for extra-terrestrial habitats, roving/cargo vehicles, or space tourism, autonomous space networks will provide a vital communications lifeline for both future
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Satellite Network Constellation Design
2014Satellite constellation design plays an important role in satellite network robust QoS routing technology. Although robust QoS routing technology should not depend on constellation design, constellation design can affect the system cost, the effective communications of the entire network, and the effective and convenient management of the satellite ...
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Optimal Walker Constellation Design of LEO-Based Global Navigation and Augmentation System
Remote Sensing, 2020Tianhe Xu, Honglei Yang, Wenfeng Nie
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