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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In uplink block-fading multiple access channel (BF-MAC), the advantage ofmultiuser diversity (MUD) can be taken to achieve higher system throughput. Inthis letter, with rate constraints for all users and only channel stateinformation available at the receiver assumed, we demonstrate thatnon-orthogonal multiple access (NOMA) outperforms the counterpart of orthogonalmultiple access (OMA) via exploiting the MUD from the superposition of multipleusers. The MUD gain achieved by NOMA compared with OMA is quantitativelyanalyzed for finite users, and the closed-form upper bound of MUD gain from thesuperposition of infinite users is also derived. Numerical results show thatthe potential MUD gain from superposition of infinite users can be wellapproached with limited superposed users, which indicates that multiple accessschemes with limited superposed users can provide a good tradeoff betweensystem performance and decoding complexity.

Multiuser Diversity Gain from Superposition of Infinite Users over Block-Fading MAC