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 rectangularly-pulsed orthogonal frequency division multiplexing (OFDM)systems, constant-amplitude (CA) sequences are desirable to constructpreamble/pilot waveforms to facilitate system parameter identification (SPI).Orthogonal CA sequences are generally preferred in various SPI applicationslike random-access channel identification. However, the number of conventionalorthogonal CA sequences (e.g., Zadoff-Chu sequences) that can be adopted incellular communication without causing sequence identification ambiguity isinsufficient. Such insufficiency causes heavy performance degradation for SPIrequiring a large number of identification sequences. Moreover,rectangularly-pulsed OFDM preamble/pilot waveforms carrying conventional CAsequences suffer from large power spectral sidelobes and thus exhibit lowspectral compactness. This paper is thus motivated to develop several order-ICA sequence families which contain more orthogonal CA sequences while endowingthe corresponding OFDM preamble/pilot waveforms with fast-decaying spectralsidelobes. Since more orthogonal sequences are provided, the developed order-ICA sequence families can enhance the performance characteristics in SPIrequiring a large number of identification sequences over multipath channelsexhibiting short-delay channel profiles, while composing spectrally compactOFDM preamble/pilot waveforms.

Orthogonal Constant-Amplitude Sequence Families for System Parameter Identification in Spectrally Compact OFDM