Journal
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume 14, Issue 3, Pages 1434-1446Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TWC.2014.2366153
Keywords
Massive MIMO; multi-confocal ellipse channel model; spherical wavefront; non-stationarity; birth-death process
Funding
- SNCS Research Center
- University of Tabuk
- Ministry of Higher Education in Saudi Arabia
- QUICK project
- International Research Staff Exchange Scheme (FP7-PEOPLE-IRSES)
- European Commission
- Key Laboratory of Cognitive Radio and Information Processing (Guilin University of Electronic Technology)
- Ministry of Education [2013KF01]
- National Natural Science Foundation of China [61222105]
- Engineering and Physical Sciences Research Council (EPSRC) under Established Career Fellowship [EP/K008757/1]
- State Key Lab of Rail Traffic Control and Safety [RCS2014ZT11]
- National High Technology Research and Development Program of China (863 project) [2014AA01A706]
- EPSRC [EP/K008757/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K008757/1] Funding Source: researchfish
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This paper proposes a novel non-stationary wideband multi-confocal ellipse two dimensional (2-D) channel model for massive multiple-input multiple-output (MIMO) communication systems. Spherical wavefront is assumed in the proposed channel model, instead of the plane wavefront assumption used in conventional MIMO channel models. In addition, the birth-death process is incorporated into the proposed model to capture the dynamic properties of clusters on both the array and time axes. Statistical properties of the channel model such as the spacetime-frequency correlation function and power imbalance on the antenna array are studied. The impact of the spherical wavefront assumption on the statistical properties of the channel model is investigated. Furthermore, numerical analysis shows that the proposed channel model is able to capture specific characteristics of massive MIMO channel as observed in measurements.
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