Antenna Arrays for Line-of-Sight Massive MIMO: Half Wavelength Is Not Enough
AbstractThe aim of this paper is to analyze the array synthesis for 5 G massive MIMO systems in the line-of-sight working condition. The main result of the numerical investigation performed is that non-uniform arrays are the natural choice in this kind of application. In particular, by using non-equispaced arrays, we show that it is possible to achieve a better average condition number of the channel matrix and a significantly higher spectral efficiency. Furthermore, we verify that increasing the array size is beneficial also for circular arrays, and we provide some useful rules-of-thumb for antenna array design for massive MIMO applications. These results are in contrast to the widely-accepted idea in the 5 G massive MIMO literature, in which the half-wavelength linear uniform array is universally adopted. View Full-Text
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Pinchera, D.; Migliore, M.D.; Schettino, F.; Panariello, G. Antenna Arrays for Line-of-Sight Massive MIMO: Half Wavelength Is Not Enough. Electronics 2017, 6, 57.
Pinchera D, Migliore MD, Schettino F, Panariello G. Antenna Arrays for Line-of-Sight Massive MIMO: Half Wavelength Is Not Enough. Electronics. 2017; 6(3):57.Chicago/Turabian Style
Pinchera, Daniele; Migliore, Marco D.; Schettino, Fulvio; Panariello, Gaetano. 2017. "Antenna Arrays for Line-of-Sight Massive MIMO: Half Wavelength Is Not Enough." Electronics 6, no. 3: 57.