Increasing downlink cellular throughput with limited network MIMO coordination

Authors:
Howard Huang;Matteo Trivellato;Ari Hottinen;Mansoor Shafi;Peter J. Smith;Reinaldo Valenzuela
Affiliations:
Wireless Communications Research Department, Bell Labs, Alcatel-Lucent, New Jersey;Department of Information Engineering, University of Padova, Italy;Nokia Research Center, Finland;Telecom New Zealand, Wellington, New Zealand;Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand;Wireless Communications Research Department, Bell Labs, Alcatel-Lucent, New Jersey
Venue:
IEEE Transactions on Wireless Communications
Year:
2009

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Abstract

Single-user, multiuser, and network MIMO performance is evaluated for downlink cellular networks with 12 antennas per site, sectorization, universal frequency reuse, scheduled packet-data, and a dense population of stationary users. Compared to a single-user MIMO baseline system with 3 sectors per site, network MIMO coordination is found to increase throughput by a factor of 1.8 with intra-site coordination among antennas belonging to the same cell site. Intra-site coordination performs almost as well as a highly sectorized system with 12 sectors per site. Increasing the coordination cluster size from 1 to 7 sites increases the throughput gain factor to 2.5.