Channel Estimation Errors impact on the sum-rate maximization in a JP-CoMP Transmission Systems

Abstract : In this paper, we consider one particular scenario of the transmission coordination among multiple cell sites, namely the joint processing coordinated multipoint transmission scheme. A joint processing coordinated multipoint is composed of several BSs that cooperate to serve a set of mobile stations (MSs) and where both BSs and MSs are equipped with multiple antennas. In the context of this transmission scenario, we model the multicell cooperative system under the presence of channel estimation errors that are often neglected but that can significantly influence the obtained results. Furthermore, we consider a general framework where the distributed power from the BSs to the MSs is not constrained to be identical. We then propose a modified version of the classical block diagonalisation and zero-forcing beamforming to efficiently mitigate the existing ICI. Finally, we evaluate the sum rate expression of the considered cooperative system, and we propose efficient alternatives to improve it without coupling the beamforming and the power control processes. Simulation results are given to support our claims.
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https://hal.archives-ouvertes.fr/hal-00951939
Contributor : Guillaume Ferré <>
Submitted on : Tuesday, February 25, 2014 - 5:45:09 PM
Last modification on : Tuesday, October 1, 2019 - 9:54:02 AM

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Fatma Abdelkefi, S. Feki, Mohamed Siala, Guillaume Ferré. Channel Estimation Errors impact on the sum-rate maximization in a JP-CoMP Transmission Systems. Transactions on emerging telecommunications technologies, Wiley-Blackwell, 2013, 1 (1), pp.1-15. ⟨10.1002/ett.2673⟩. ⟨hal-00951939⟩

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