Sum Rate Analysis of MU-MISO Systems with ZF Beamforming over Composite Fading Channels

Ou ZHAO; Hidekazu MURATA

doi:10.1587/transfun.E98.A.558

Sum Rate Analysis of MU-MISO Systems with ZF Beamforming over Composite Fading Channels

Ou ZHAO, Hidekazu MURATA

Full Text Views

0

Share
Cite this

Summary :

The performance of multiuser multiple-input single-output (MU-MISO) systems is not only affected by small-scale multipath fading but also by large-scale fading (i.e., shadowing) and path loss. In this paper, we concentrate on the sum rate distribution of MU-MISO systems employing linear zero-forcing beamforming, accounting for both multipath fading and shadowing effects, as well as spatial correlation at the transmit and receiver sides. In particular, we consider the classical spatially correlated lognormal model and propose closed-form bounds on the distribution of the achievable sum rates in MU-MISO systems. With the help of these bounds, we derive a relationship between the interuser distance and sum rate corresponding to 10% of the cumulative distribution function under different environmental conditions. A practical conclusion from our results based on the considered system is that the effect of spatially correlated shadowing can be considered to be independent when the interuser distance is approximately five times the shadowing correlation distance. Furthermore, a detailed analysis of the effects of composite channel attenuation consisting of multipath fading and shadowing is also provided.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E98-A No.2 pp.558-568

Publication Date: 2015/02/01

Publicized

Online ISSN: 1745-1337

DOI: 10.1587/transfun.E98.A.558

Type of Manuscript: Special Section PAPER (Special Section on Wideband Systems)

Category

Authors

Ou ZHAO
Kyoto University
Hidekazu MURATA
Kyoto University

Keyword

Cite this

Copy

Ou ZHAO, Hidekazu MURATA, "Sum Rate Analysis of MU-MISO Systems with ZF Beamforming over Composite Fading Channels" in IEICE TRANSACTIONS on Fundamentals, vol. E98-A, no. 2, pp. 558-568, February 2015, doi: 10.1587/transfun.E98.A.558.
Abstract: The performance of multiuser multiple-input single-output (MU-MISO) systems is not only affected by small-scale multipath fading but also by large-scale fading (i.e., shadowing) and path loss. In this paper, we concentrate on the sum rate distribution of MU-MISO systems employing linear zero-forcing beamforming, accounting for both multipath fading and shadowing effects, as well as spatial correlation at the transmit and receiver sides. In particular, we consider the classical spatially correlated lognormal model and propose closed-form bounds on the distribution of the achievable sum rates in MU-MISO systems. With the help of these bounds, we derive a relationship between the interuser distance and sum rate corresponding to 10% of the cumulative distribution function under different environmental conditions. A practical conclusion from our results based on the considered system is that the effect of spatially correlated shadowing can be considered to be independent when the interuser distance is approximately five times the shadowing correlation distance. Furthermore, a detailed analysis of the effects of composite channel attenuation consisting of multipath fading and shadowing is also provided.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/transfun.E98.A.558/_p

Copy

@ARTICLE{e98-a_2_558,
author={Ou ZHAO, Hidekazu MURATA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Sum Rate Analysis of MU-MISO Systems with ZF Beamforming over Composite Fading Channels},
year={2015},
volume={E98-A},
number={2},
pages={558-568},
abstract={The performance of multiuser multiple-input single-output (MU-MISO) systems is not only affected by small-scale multipath fading but also by large-scale fading (i.e., shadowing) and path loss. In this paper, we concentrate on the sum rate distribution of MU-MISO systems employing linear zero-forcing beamforming, accounting for both multipath fading and shadowing effects, as well as spatial correlation at the transmit and receiver sides. In particular, we consider the classical spatially correlated lognormal model and propose closed-form bounds on the distribution of the achievable sum rates in MU-MISO systems. With the help of these bounds, we derive a relationship between the interuser distance and sum rate corresponding to 10% of the cumulative distribution function under different environmental conditions. A practical conclusion from our results based on the considered system is that the effect of spatially correlated shadowing can be considered to be independent when the interuser distance is approximately five times the shadowing correlation distance. Furthermore, a detailed analysis of the effects of composite channel attenuation consisting of multipath fading and shadowing is also provided.},
keywords={},
doi={10.1587/transfun.E98.A.558},
ISSN={1745-1337},
month={February},}

Copy

TY - JOUR
TI - Sum Rate Analysis of MU-MISO Systems with ZF Beamforming over Composite Fading Channels
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 558
EP - 568
AU - Ou ZHAO
AU - Hidekazu MURATA
PY - 2015
DO - 10.1587/transfun.E98.A.558
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E98-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 2015
AB - The performance of multiuser multiple-input single-output (MU-MISO) systems is not only affected by small-scale multipath fading but also by large-scale fading (i.e., shadowing) and path loss. In this paper, we concentrate on the sum rate distribution of MU-MISO systems employing linear zero-forcing beamforming, accounting for both multipath fading and shadowing effects, as well as spatial correlation at the transmit and receiver sides. In particular, we consider the classical spatially correlated lognormal model and propose closed-form bounds on the distribution of the achievable sum rates in MU-MISO systems. With the help of these bounds, we derive a relationship between the interuser distance and sum rate corresponding to 10% of the cumulative distribution function under different environmental conditions. A practical conclusion from our results based on the considered system is that the effect of spatially correlated shadowing can be considered to be independent when the interuser distance is approximately five times the shadowing correlation distance. Furthermore, a detailed analysis of the effects of composite channel attenuation consisting of multipath fading and shadowing is also provided.
ER -