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Throughput Optimization for MISO Interference Channels via Coordinated User-Specific Tilting

Nima Seifi (Institutionen för signaler och system, Kommunikationssystem) ; M. Coldrey ; Mats Viberg (Institutionen för signaler och system, Signalbehandling)
IEEE Communications Letters (1089-7798). Vol. 16 (2012), 8, p. 1248-1251.
[Artikel, refereegranskad vetenskaplig]

In this letter, we propose a novel framework to enhance the throughput in multiple-input single-output (MISO) mutually interfering channels via selecting the tilt angles at all base stations (BSs) in a coordinated fashion. In the proposed framework, multiple BSs adjust their tilt angles jointly to maximize the sum throughput of the scheduled users, denoted as coordinated user-specific tilting. Assuming the availability of location information of the scheduled users at all BSs, accurate analytical expression for user ergodic rate is provided, which enables a decentralized deployment of the proposed framework at each BS. Simulation results show that the proposed coordinated user-specific tilting scheme outperforms the conventional schemes employing a fixed tilt angle at each BS.

Nyckelord: Antenna tilt, coordination, downlink, MISO, throughput



Denna post skapades 2012-10-25. Senast ändrad 2014-09-02.
CPL Pubid: 165104

 

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