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 Tools annual

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 Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Rate-splitting (RS) has recently been recognized as a promisingphysical-layer technique for multi-antenna broadcast channels (BC). Due to itsability to partially decode the interference and partially treat the remaininginterference as noise, RS is an enabler for a powerful multiple access, namelyrate-splitting multiple access (RSMA), that has been shown to achieve higherspectral efficiency (SE) and energy efficiency (EE) than both space divisionmultiple access (SDMA) and non-orthogonal multiple access (NOMA) in a widerange of user deployments and network loads. As SE maximization and EEmaximization are two conflicting objectives, the study of the tradeoff betweenthe two criteria is of particular interest. In this work, we address the SE-EEtradeoff by studying the joint SE and EE maximization problem of RSMA inmultiple input single output (MISO) BC with rate-dependent circuit powerconsumption at the transmitter. To tackle the challenges coming from multipleobjective functions and rate-dependent circuit power consumption, we firstpropose two methods to transform the original problem into a single-objectiveproblem, namely, weighted-sum method and weighted-power method. A successiveconvex approximation (SCA)-based algorithm is then proposed to jointly optimizethe precoders and RS message split of the transformed problem. Numericalresults show that our algorithm converges much faster than existing algorithms.In addition, the performance of RS is superior to or equal to non-RS strategyin terms of both SE and EE and their tradeoff.

Rate-Splitting Multiple Access for Multi-antenna Downlink Communication Systems: Spectral and Energy Efficiency Tradeoff