Uplink power efficiency of multiuser MIMO with very large antenna arrays

Hien Quoc Ngo; Erik G. Larsson; Thomas L.  Marzetta

doi:10.1109/Allerton.2011.6120314

Uplink power efficiency of multiuser MIMO with very large antenna arrays

Hien Quoc Ngo, Erik G. Larsson, Thomas L. Marzetta

School of Electronics, Electrical Engineering and Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

59 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	Allerton Conference on Communication, Control, and Computing
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
DOIs	https://doi.org/10.1109/Allerton.2011.6120314
Publication status	Published - 03 Jan 2012

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Ngo, H. Q., Larsson, E. G., & Marzetta, T. L. (2012). Uplink power efficiency of multiuser MIMO with very large antenna arrays. In Allerton Conference on Communication, Control, and Computing Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/Allerton.2011.6120314

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