In this work, we address a novel replication scheme for Internet-of-Things (IoT) low power wide area networks (LPWAN), considering the ability of gateway to recover, through successive interference cancellation (SIC), superposed signals in domain. We show that introduced mathematical framework matches Monte Carlo simulations. The proposed outperforms typical transmission schemes, at least from ...

Power-domain non-orthogonal multiple access (NOMA) has become a promising technology to exploit the new dimension of power domain enhance spectral efficiency wireless networks. However, most existing NOMA schemes rely on strong assumption that users’ channel gains are quite different, which may be invalid in practice. To unleash potential power-domain NOMA, we propose reconfigurable intelligent...

To support real-time communication, multi-radio multi-channel city-wide WMNs (Wireless Mesh Networks) are studied in this paper. In the studied WMNs, a WMN router is equipped with two communication interfaces/radios, one is working on 2.4GHz for the client accessing, and the other is working on 5GHz for the backhaul communication. First, a greedy static channel assignment algorithm for access i...

This paper investigates the structure of general affine subspaces of ( )  L . For a d × d expansive matrix A, it shows that every affine subspace can be decomposed as an orthogonal sum of spaces each of which is generated by dilating some shift invariant space in this affine subspace, and every non-zero and non-reducing affine subspace is the orthogonal direct sum of a reducing subspace and a ...

A (symmetric) nested orthogonal array is a symmetric orthogonal array OA(N, k, s, g) which contains an OA(M,k, r, g) as a subarray, where M < N and r < s. In this communication, some methods of construction of nested symmetric orthogonal arrays are given. Asymmetric nested orthogonal arrays are defined and a few methods of their construction are described.

In magnetically ordered systems the Heisenberg exchange interaction between neighboring spins favors collinear alignment such as that seen in ferromagnets and antiferromagnets. The inclusion of antisymmetric exchange, also known Dzyaloshinskii--Moriya (DMI), promotes an orthogonal arrangement is subject this review. DMI responsible for chiral magnetism, spin-textured skyrmions, magnetoelectric ...