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/

Zendy Plus

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

Zendy Tools

Zendy Open

We study a scenario in which multiple uncoordinated devices aim to achievereliable transmissions within a given time frame. The devices areintermittently active and access a shared pool of channel resources in agrant-free manner by utilizing multiple transmissions (K-repetition coding).This allows them to achieve diversity and improve the reliability within acertain latency constraint. We focus on two access methods: one where deviceschoose K slots at random and another one where the access patterns aredeterministic and follow a specific code design, namely the Steiner System. Weanalyze the problem under two signal models that involve different complexityfor the receiver. First, collision model is considered, where onlyinterference-free transmissions can be used and combined. Second, a modeltreating interference as noise is analyzed, where the receiver is capable ofutilizing all K replicas, applying maximum ratio combining (MRC). For bothsignal models, we investigate receivers with and without successiveinterference cancellation (SIC). We develop approximations and bounds for theoutage probabilities that very closely match simulation results. Overall, weshow that deterministic access patterns have the potential to significantlyoutperform random selection in terms of reliability. Furthermore, deterministicaccess patterns offer a simplified system design.

Deterministic Patterns for Multiple Access with Latency and Reliability Guarantees