TY - JOUR
T1 - Exploiting Low Complexity Beam Allocation in Multi-User Switched Beam Millimeter Wave Systems
AU - Nair, Manish
AU - Wang, Junyuan
AU - Leiba, Yigal
AU - Zhu, Huiling
AU - Gomes, Nathan J.
AU - Wang, Jiangzhou
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Switched-beam systems offer a promising solution for realizing multi-user communications at millimeter wave (mmWave) frequencies. A low-complexity beam allocation (LBA) algorithm has been proposed to solve the challenging problem of maximizing sum data-rates. However, there are practical limitations in mmWave systems, such as restrictions in the number of available radio frequency transceiver chains at the base station, sensitivity to sidelobe interference and the beam generation techniques. In this paper, using generalized beam-patterns, we present the maximum sum data-rates achievable in switched-beam mmWave systems compared with fixed-beam systems by applying LBA. Then, the impact on maximum sum data rates of actual beam-patterns, obtained from a practical mmWave lens antenna, which have higher and non-uniform sidelobes compared with the theoretical beams, is assessed. Finally, as a guide for practical wireless system design, benchmarks are established for relative sidelobe levels
AB - Switched-beam systems offer a promising solution for realizing multi-user communications at millimeter wave (mmWave) frequencies. A low-complexity beam allocation (LBA) algorithm has been proposed to solve the challenging problem of maximizing sum data-rates. However, there are practical limitations in mmWave systems, such as restrictions in the number of available radio frequency transceiver chains at the base station, sensitivity to sidelobe interference and the beam generation techniques. In this paper, using generalized beam-patterns, we present the maximum sum data-rates achievable in switched-beam mmWave systems compared with fixed-beam systems by applying LBA. Then, the impact on maximum sum data rates of actual beam-patterns, obtained from a practical mmWave lens antenna, which have higher and non-uniform sidelobes compared with the theoretical beams, is assessed. Finally, as a guide for practical wireless system design, benchmarks are established for relative sidelobe levels
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U2 - 10.1109/ACCESS.2018.2887003
DO - 10.1109/ACCESS.2018.2887003
M3 - Article (journal)
SN - 2169-3536
VL - 7
SP - 2894
EP - 2903
JO - IEEE Access
JF - IEEE Access
M1 - 8579140
ER -