2022
DOI: 10.1587/transcom.2021mei0002
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User-Centric Design of Millimeter Wave Communications for Beyond 5G and 6G

Abstract: In this paper, we propose new radio access network (RAN) architecture for reliable millimeter-wave (mmWave) communications, which has the flexibility to meet users' diverse and fluctuating requirements in terms of communication quality. This architecture is composed of multiple radio units (RUs) connected to a common distributed unit (DU) via fronthaul links to virtually enlarge its coverage. We further present grant-free non-orthogonal multiple access (GF-NOMA) for lowlatency uplink communications with a mass… Show more

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Cited by 6 publications
(4 citation statements)
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“…The maximum transmit power per BS is set to P max,b = 30 [dBm], and a total of K = 36 subcarriers with W = 240 [kHz] subcarrier spacing operating at the 28 [GHz] band is assumed, which leads to a sampling period of T s = 1/ (W K) = 0.115 [µs] 6 . Pulse shaping is performed with a root-raised cosine roll-off filter with the roll-off rate of 0.8, and the equivalent pulse response p(dT s −τ c ) is calculated using the raised cosine roll-off filter.…”
Section: Performance Assessmentmentioning
confidence: 99%
See 1 more Smart Citation
“…The maximum transmit power per BS is set to P max,b = 30 [dBm], and a total of K = 36 subcarriers with W = 240 [kHz] subcarrier spacing operating at the 28 [GHz] band is assumed, which leads to a sampling period of T s = 1/ (W K) = 0.115 [µs] 6 . Pulse shaping is performed with a root-raised cosine roll-off filter with the roll-off rate of 0.8, and the equivalent pulse response p(dT s −τ c ) is calculated using the raised cosine roll-off filter.…”
Section: Performance Assessmentmentioning
confidence: 99%
“…For the fully-digital methods, obviously N RF = Nt = 16 6. Although we consider only 36 subcarriers to reduce the computational complexity to a level compatible with laptop computers, the sampling period is still much shorter than typical blocking times, which are on the order of milliseconds[17],[18].…”
mentioning
confidence: 99%
“…The millimeter wave (mmWave) communications can significantly boost network capacity to make ubiquitous and on-demand interconnection possible in future wireless networks [1][2][3]. However, owing to the propagation loss of the mmWave band and the broadcast nature of wireless channels, mm Wave communication suffers from the risk of information leakage in the presence of eavesdroppers, especially when the legitimate and wiretap channels are highly correlated, which makes security an indispensable pursuit for system development.…”
Section: Introductionmentioning
confidence: 99%
“…O WING to the growing number of wireless devices and the complexity of user demands, modern wireless communications systems require increasingly larger bandwidths [1]- [3]. Fifth-generation mobile communications systems (5G) have therefore been designed to exploit available spaces in the millimeter-wave (mmWave) band within 24 [GHz] to 300 [GHz], as a means to address spectrum shortages [4]- [6], with further utilization of the mmWave band considered crucial to meet the requirements of Beyond-5G and sixth-generation mobile communications systems (6G) [7]- [11].…”
Section: Introductionmentioning
confidence: 99%