This letter proposes a new practical multiuser MIMO (MU-MIMO) scheme, which is an evolution of the well-known Per User Unitary beamforming Rate Control (PU2RC) proposed for 3GPP-LTE and IEEE802.16m standards. The proposed scheme includes an efficient user scheduling algorithm which alleviates the major weakness of the conventional PU2RC. Numerical results show that the proposed scheme provides ...

We propose a deterministic SWAP gate for dual-rail-encoded single photon qubits. The is constructed from waveguide crossings, Mach–Zehnder interferometers and phase shifters which provide the reconfigurability. Through manipulating of shifters, we can apply either or identity gates. As an essential element nearest neighbor qubit networks, has simple structure presents minimal overhead. Providin...

We study the moduli space of 3d $\mathcal{N}=4$ quiver gauge theories with unitary, orthogonal and symplectic nodes, that fall into exceptional sequences. find both Higgs Coulomb branches factorise decoupled sectors. Each sector is described by a single theory only unitary nodes. The orthosymplectic quivers serve as magnetic for 5d $\mathcal{N}=1$ superconformal field which can be engineered in...

In this paper we collect some facts about the topology on the space of irreducible unitary representations of a real reductive group. The main goal is Theorem 10, which asserts that most of the “cohomological” unitary representations for real reductive groups (see [VZ]) are isolated. Many of the intermediate results can be extended to groups over any local field, but we will discuss these gener...

Let F be a local non-Archimedean field of characteristic zero with finite residue field. Based on Tadić’s classification the unitary dual $${\mathrm {GL}}_{2n}(F)$$ , we classify irreducible representations that have nonzero linear periods, in terms Speh periods. We also give necessary and sufficient condition for existence period representation.

The distribution of visual attention has been the topic of much investigation, and various theories have posited that attention is allocated either as a single unitary focus or as multiple independent foci. In the present experiment, we demonstrate that attention can be flexibly deployed as either a unitary or a divided focus in the same experimental task, depending on the observer's goals. To ...

In this paper, motivated by the results published by R. Khalil and A. Saleh in 2005, we study the notion of k-smooth points and the notion of k-smoothness, which are dual to the notion of k-rotundity. Generalizing these notions and combining smoothness with the recently introduced notion of unitary, we study classes of Banach spaces for which the vector space, spanned by the state space corresp...