Uplink Power Efficiency of Multiuser MIMO with Very Large Antenna Arrays
2011 (English)In: Proceedings of Allerton Conference on Communication, Control, and Computing, IEEE , 2011, 1272-1279 p.Conference paper (Refereed)
A multiplicity of autonomous terminals simultaneously transmits data streams to a compact array of antennas. The array uses imperfect channel-state information derived from transmitted pilots to extract the individual data streams. The power radiated by the terminals can be made inversely proportional to the square-root of the number of base station antennas with no reduction in performance. In contrast if perfect channel-state information were available the power could be made inversely proportional to the number of antennas. A maximum-ratio combining receiver normally performs worse than a zero-forcing receiver. However as power levels are reduced, the cross-talk introduced by the inferior maximum-ratio receiver eventually falls below the noise level and this simple receiver becomes a viable option.
Place, publisher, year, edition, pages
IEEE , 2011. 1272-1279 p.
Multiuser MIMO, power efficiency, very large antenna array
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-70181DOI: 10.1109/Allerton.2011.6120314ISBN: 978-1-4577-1817-5OAI: oai:DiVA.org:liu-70181DiVA: diva2:436517
2011 49th Annual Allerton Conference on Communication, Control, and Computing, Allerton 2011; Monticello, IL; United States