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

Performance of multicell systems is inevitably limited by interference andavailable resources. Although intercell interference can be mitigated by BaseStation (BS) Coordination, the demand on inter-BS information exchange andcomputational complexity grows rapidly with the number of cells, subcarriers,and users. On the other hand, some of the existing coordination beamformingmethods need computation of pseudo-inverse or generalized eigenvector of amatrix, which are practically difficult to implement in a real system. Tohandle these issues, we propose a novel linear beamforming across a set ofcoordinated cells only with limiting backhaul signalling. Resource allocation(i.e. precoding and power control) is formulated as an optimization problemwith objective function of signal-to-interference-plus-noise ratios (SINRs) inorder to maximize the instantaneous weighted sum-rate subject to powerconstraints. Although the primal problem is nonconvex and difficult to beoptimally solved, an iterative algorithm is presented based on theKarush-Kuhn-Tucker (KKT) condition. To have a practical solution with lowcomputational complexity and signalling overhead, we present CB-REFIM(coordination beamforming-reference based interference management) and show therecently proposed REFIM algorithm can be interpreted as a special case ofCB-REFIM. We evaluate CB-REFIM through extensive simulation and observe thatthe proposed strategies achieve close-to-optimal performance.

CB-REFIM: A Practical Coordinated Beamforming in Multicell Networks