Millimeter-Wave Cellular Wireless Networks: Potentials and Challenges
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Cites background from "Millimeter-Wave Cellular Wireless N..."
...THE demand for increasing bandwidth in communication systems has led to ever higher operation frequencies and data rates in integrated circuits in recent decades [1], [2]....
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Cites background from "Millimeter-Wave Cellular Wireless N..."
...Nevertheless the adoption of a large-scale antenna array also imposes different challenges on systems because the required large antenna arrays significantly increases the cost and energy consumption as well as the dimension for both channel state information (CSI) acquisition and system design [1], [2], [4]....
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...Among all, hybrid analog and digital architecture is considered as one of the most promising approaches owing to its ability to reducing hardware cost, complexity, and system overhead [2]–[4]....
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...[1], [2], [4], [16] Although there are numerous papers discussing hybrid precoding, only several render their emphases on the hybrid combiner designs [9], [10], [13], [14]....
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Cites methods from "Millimeter-Wave Cellular Wireless N..."
...Fortunately, the beamforming (precoding) technology in MIMO systems, which will be widely employed in the 5G communication, could form very high precoding gains to compensate for the high path loss of millimeter wave [6]....
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References
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"Millimeter-Wave Cellular Wireless N..." refers background in this paper
...Also, the human body and many outdoor materials being very reflective, allow them to be important scatterers for mmW propagation [28], [30]....
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...However, these measurements were performed in an outdoor campus setting with much lower building density and greater opportunities for LOS connectivity than would be found in a typical urban deployment....
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...Despite the potential of mmW cellular systems, there are a number of key challenges to realizing the vision of cellular networks in these bands: • Range and directional communication: Friis’ transmis- sion law [54] states that the free space omnidirectional path loss grows with the square of the…...
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6,708 citations
"Millimeter-Wave Cellular Wireless N..." refers background or methods in this paper
...In both 28- and 73-GHz measurements, each point was classified as either being in a NLOS or LOS situation, based on a manual classification made at the time of the measurements; see [26] and [28]–[33]....
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...• Empirical NYC: These curves are based on the omnidirectional path loss predicted by our linear model (1) for the mmW channel with the parameters from Table 1, as derived from the directional measurements in [26]....
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...Details of the measurements can be found in [26], [28]– [33], [81]....
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...This tremendous potential has led to considerable recent interest in mmW cellular both in industry [7]–[9], [18], [19] and academia [20]–[26], with a growing belief that mmW bands will play a significant role in beyond 4G and 5G cellular systems [27]....
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...In particular, we survey our own measurements [26], [28]–[33] made in New York City (NYC) in both 28- and 73-GHz bands and the statistical models for the channels developed in [34]....
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5,158 citations
"Millimeter-Wave Cellular Wireless N..." refers background in this paper
...These multiple antenna systems can be used to form very high gain, electrically steerable arrays, fabricated at the base station (BS), in the skin of a cellphone, or even within a chip [6], [10]–[17]....
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3,711 citations
3,298 citations
"Millimeter-Wave Cellular Wireless N..." refers background in this paper
...Heterogeneous networks, or HetNets, have been one of the most active research areas in cellular standards bodies in the last five years [45], [48], [67], [68], with the main focus being intercell interference coordination and load balancing....
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