Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Millimeter Wave Channel Modeling and Cellular Capacity Evaluation   With the severe spectrum shortage in conventional cellular bands, millimeter
wave (mmW) frequencies between 30 and 300 GHz have been attracting growing
attention as a possible candidate for next-generation micro- and picocellular
wireless networks. The mmW bands offer orders of magnitude greater spectrum
than current cellular allocations and enable very high-dimensional antenna
arrays for further gains via beamforming and spatial multiplexing. This paper
uses recent real-world measurements at 28 and 73 GHz in New York City to derive
detailed spatial statistical models of the channels and uses these models to
provide a realistic assessment of mmW micro- and picocellular networks in a
dense urban deployment. Statistical models are derived for key channel
parameters including the path loss, number of spatial clusters, angular
dispersion and outage. It is found that, even in highly non-line-of-sight
environments, strong signals can be detected 100 m to 200 m from potential cell
sites, potentially with multiple clusters to support spatial multiplexing.
Moreover, a system simulation based on the models predicts that mmW systems can
offer an order of magnitude increase in capacity over current state-of-the-art
4G cellular networks with no increase in cell density from current urban
deployments.

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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: math
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
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The categories of this paper are: eess
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg