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 High Speed Train Communications (HSTC), the most challenging issue iscoping with the extremely fast fading channel. Compared with its staticcounterpart, channel estimation on the move consumes excessive energy andspectrum to achieve similar performance. To address this issue, we exploit thedelay correlation inherent in the linear spatial-temporal structure ofmulti-antenna array, based on which the rapid fading channel may beapproximated by a virtual slow-fading channel. Subsequently, error probabilityand spectral efficiency are re-examined for this staticized channel. Inparticular, we formulate the quantitative tradeoff between the two metrics ofinterest, by adjusting the pilot percentage in each frame. Numerical resultsverify the good performance of the proposed scheme and elucidate the tradeoff.

Exploiting Delay Correlation for Multi-Antenna-Assisted High Speed Train Communications