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

This paper is concerned with the performance of differentialamplify-and-forward (D-AF) relaying for multi-node wireless communications overtime-varying Rayleigh fading channels. A first-order auto-regressive model isutilized to characterize the time-varying nature of the channels. Based on thesecondorder statistical properties of the wireless channels, a new set ofcombining weights is proposed for signal detection at the destination.Expression of pair-wise error probability (PEP) is provided and used to obtainthe approximated total average bit error probability (BER). It is shown thatthe performance of the system is related to the auto-correlation of the directand cascaded channels and an irreducible error floor exists at highsignal-to-noise ratio (SNR). The new weights lead to a better performance whencompared to the conventional combining scheme. Computer simulation is carriedout in different scenarios to support the analysis.

Performance of Differential Amplify-and-Forward Relaying in Multi-Node Wireless Communications