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Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems

Hien Quoc Ngo ; Larsson, E. G. ; Marzetta, T. L.

IEEE transactions on communications, 2013-04, Vol.61 (4), p.1436-1449 [Periódico revisado por pares]

New York, NY: IEEE

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Título:
Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems
Autor: Hien Quoc Ngo ; Larsson, E. G. ; Marzetta, T. L.
Assuntos: Antennas ; Applied sciences ; Arrays ; Detection, estimation, filtering, equalization, prediction ; Detectors ; Energy efficiency ; Exact sciences and technology ; Fading ; Information, signal and communications theory ; MIMO ; multiuser MIMO ; Radiocommunications ; Receivers ; Signal and communications theory ; Signal, noise ; spectral efficiency ; Systems, networks and services of telecommunications ; Telecommunications ; Telecommunications and information theory ; Transmission and modulation (techniques and equipments) ; Uplink ; Vectors ; very large MIMO systems
É parte de: IEEE transactions on communications, 2013-04, Vol.61 (4), p.1436-1449
Descrição: 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. Lower capacity bounds for maximum-ratio combining (MRC), zero-forcing (ZF) and minimum mean-square error (MMSE) detection are derived. An MRC receiver normally performs worse than ZF and MMSE. 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. The tradeoff between the energy efficiency (as measured in bits/J) and spectral efficiency (as measured in bits/channel use/terminal) is quantified for a channel model that includes small-scale fading but not large-scale fading. It is shown that the use of moderately large antenna arrays can improve the spectral and energy efficiency with orders of magnitude compared to a single-antenna system.
Editor: New York, NY: IEEE
Idioma: Inglês

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Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems

Hien Quoc Ngo ; Larsson, E. G. ; Marzetta, T. L.

New York, NY: IEEE

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