English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The problem of optimizing discrete phases in a reconfigurable intelligentsurface (RIS) to maximize the received power at a user equipment is addressed.Necessary and sufficient conditions to achieve this maximization are given.These conditions are employed in an algorithm to achieve the maximization. Newversions of the algorithm are given that are proven to achieve convergence in Nor fewer steps whether the direct link is completely blocked or not, where N isthe number of the RIS elements, whereas previously published results achievethis in KN or 2N number of steps where K is the number of discrete phases,e.g., [1], [2]. Thus, for a discrete-phase RIS, the techniques presented inthis paper achieve the optimum received power in the smallest number of stepspublished in the literature. In addition, in each of those N steps, thetechniques presented in this paper determine only one or a small number ofphase shifts with a simple elementwise update rule, which result in asubstantial reduction of computation time, as compared to the algorithms in theliterature, e.g., [2], [3].

Achieving Optimum Received Power with Elementwise Updates in the Least Number of Steps for Discrete-Phase RISs