This paper presents an investigation on the performance of the Non-Orthogonal Multiple Access (NOMA) in the power domain scheme. A Power Allocation (PA) method is proposed from NOMA throughput expression analysis. This method aims to provide fair opportunities for users to improve their performance. Thus, NOMA users can achieve rates higher than, or equal to, the rates obtained with the convent...

Abstract Classical orthogonal polynomials are known to satisfy seven equivalent properties, namely the Pearson equation for linear functional, second-order differential/difference/ q -differential/ divided-difference equation, orthogonality of derivatives, Rodrigues formula, two types structure relations, and Riccati formal Stieltjes function. In this work, following previous work by Kil et al....

Reconfigurable intelligent surface (RIS) is a revolutionary technology to achieve spectrum-, energy-, and cost-efficient wireless networks. This paper considers an RIS-assisted downlink non-orthogonal-multiple-access (NOMA) system. To optimize the rate performance ensure user fairness, we maximize minimum decoding signal-to-interference-plus-noise-ratio (equivalently rate) of all users, by join...

We present a method for direction field design on surface and volumetric meshes supporting non-orthogonality. Our approach is generalization of the representation 3D cross fields in spherical harmonic basis. As such it induces geometrically meaningful measure smoothness, allows orthogonality control by simple parameter enables orientation constraints single direction. To best our knowledge this...

We construct the non-extreme solutions of non-orthogonal intersecting Dbranes. The solutions reduce to non-extreme black holes upon the toroidal compactification. We clarify the relation between two configurations with equal mass and charge, one of which is non-orthogonal intersecting Dbranes and the other one is orthogonal D-branes, from supergravity and string theory perspective. We also calc...