Macrodiversity in Cellular Networks with Random Blockages. Gupta, A., Andrews, J., & Heath, R. IEEE Transactions on Wireless Communications, 2017. abstract bibtex IEEE Blocking objects (blockages) between a transmitter and receiver cause wireless communication links to transition from line-of-sight (LOS) to non-line-of-sight (NLOS) propagation, which can greatly reduce the received power, particularly at higher frequencies such as millimeter wave (mmWave). We consider a cellular network in which a mobile user attempts to connect to two or more base stations (BSs) simultaneously, to increase the probability of at least one LOS link, which is a form of macro-diversity. We develop a framework for determining the LOS probability as a function of the number of BSs, when taking into account the correlation between blockages: for example, a single blockage close to the device - including the user's own body - could block multiple BSs. We consider the impact of the size of blocking objects on the system's < formula > < tex > $n$ < /tex > < /formula > th order LOS probability and show that macro-diversity gains are higher when the blocking objects are small. We also show that the BS density must scale as the square of the blockage density to maintain a given level of LOS probability.
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title = {Macrodiversity in Cellular Networks with Random Blockages},
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year = {2017},
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abstract = {IEEE Blocking objects (blockages) between a transmitter and receiver cause wireless communication links to transition from line-of-sight (LOS) to non-line-of-sight (NLOS) propagation, which can greatly reduce the received power, particularly at higher frequencies such as millimeter wave (mmWave). We consider a cellular network in which a mobile user attempts to connect to two or more base stations (BSs) simultaneously, to increase the probability of at least one LOS link, which is a form of macro-diversity. We develop a framework for determining the LOS probability as a function of the number of BSs, when taking into account the correlation between blockages: for example, a single blockage close to the device - including the user's own body - could block multiple BSs. We consider the impact of the size of blocking objects on the system's < formula > < tex > $n$ < /tex > < /formula > th order LOS probability and show that macro-diversity gains are higher when the blocking objects are small. We also show that the BS density must scale as the square of the blockage density to maintain a given level of LOS probability.},
bibtype = {article},
author = {Gupta, A.K. and Andrews, J.G. and Heath, R.W.},
journal = {IEEE Transactions on Wireless Communications}
}
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