Decentralized coherent coordinated multi-point transmission for weighted sum rate maximization

Jarkko Kaleva, Antti Tolli, Markku Juntti, Randall Berry, Michael Honig

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


Decentralized downlink beamformer design for coherent coordinated multi-point transmission is proposed with weighted sum rate maximization system performance objective. The weighted sum rate is maximized by successive convex approximation of the corresponding weighted mean-squared error minimization problem. Decentralized beam coordination is achieved by employing a best response design, where each base station designs its own precoders in parallel assuming fixed transmission from the adjacent cells. After each beamformer update, the fixed terms are updated according to the solutions of the cooperating transmitters. The proposed design incorporates a bi-directional beamformer signaling scheme to improve the convergence properties. This scheme exploits the time division duplexing frame structure and is shown to improve the training latency of the iterative transceiver design. Furthermore, the improved transceiver convergence rate enables periodic beamformer reinitialization, which greatly improves the achieved system performance in dense networks.

Original languageEnglish (US)
Article number7417345
JournalProceedings - IEEE Global Communications Conference, GLOBECOM
StatePublished - 2015
Event58th IEEE Global Communications Conference, GLOBECOM 2015 - San Diego, United States
Duration: Dec 6 2015Dec 10 2015

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Networks and Communications
  • Hardware and Architecture
  • Signal Processing


Dive into the research topics of 'Decentralized coherent coordinated multi-point transmission for weighted sum rate maximization'. Together they form a unique fingerprint.

Cite this