On the performance analysis of MISO broadcast channels with spatial heterogeneity

Moonsik Min; Hyun Myung Kim; Gi Hong Im

doi:10.1109/LCOMM.2013.022713.122683

On the performance analysis of MISO broadcast channels with spatial heterogeneity

Moonsik Min, Hyun Myung Kim, Gi Hong Im

School of Electronics Engineering

Pohang University of Science and Technology

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We consider the sum-rate performance of multiple-input/single-output broadcast channels in which each user has a different average signal-to-noise ratio (SNR) corresponding to their distance from the base station. Although there are already studies investigating the sum-rate growth under this channel assumption, their proofs are limited to the cases where the pathloss exponent is equal to one or two. However, the pathloss exponent is greater than two in realistic wireless environments. Therefore, by deriving the cumulative distribution function of the channel gain, which differs from the previous results, we can provide an asymptotic sum-rate and a general proof for the sum-rate growth regardless of the value of the pathloss exponent.

Original language	English
Article number	6476940
Pages (from-to)	665-668
Number of pages	4
Journal	IEEE Communications Letters
Volume	17
Issue number	4
DOIs	https://doi.org/10.1109/LCOMM.2013.022713.122683
State	Published - 2013

Keywords

Broadcast channel
semi-orthogonal user selection (SUS)
zero-forcing beamforming (ZFBF)

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10.1109/LCOMM.2013.022713.122683

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AB - We consider the sum-rate performance of multiple-input/single-output broadcast channels in which each user has a different average signal-to-noise ratio (SNR) corresponding to their distance from the base station. Although there are already studies investigating the sum-rate growth under this channel assumption, their proofs are limited to the cases where the pathloss exponent is equal to one or two. However, the pathloss exponent is greater than two in realistic wireless environments. Therefore, by deriving the cumulative distribution function of the channel gain, which differs from the previous results, we can provide an asymptotic sum-rate and a general proof for the sum-rate growth regardless of the value of the pathloss exponent.

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On the performance analysis of MISO broadcast channels with spatial heterogeneity

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Keywords

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