HAL : hal-00675528, version 1

DOI : 10.1109/SPAWC.2010.5671035

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11th IEEE International Workshop on Signal Processing Advances in Wireless Communications, Marrakech : Maroc (2010)

Large System Analysis of Zero-Forcing Precoding in MISO Broadcast Channels with Limited Feedback

Sebastian Wagner 1, Romain Couillet 2, Dirk Slock 1, Merouane Debbah 3

(20/06/2010)

In this paper we analyze the sum rate of zero-forcing (ZF) precoding in MISO broadcast channels with limited feedback, transmit correlation and path loss. Our analysis assumes that the number of transmit antennas $M$ and the number of users $K$ are large, while their ratio remains bounded. By applying recent results from random matrix theory we derive a deterministic equivalent of the signal-to-interference plus noise ratio (SINR) and compute the sum rate maximizing number of users as well as the limiting sum rate for high signal-to-noise ratios (SNR), as a function of the channel errors and the channel correlation pattern. Simulations show that theoretical and numerical results match well, even for small system dimensions.

1 :	EURECOM
	EURECOM
2 :	Chaire Sciences des Systèmes et Défis Energétiques EDF/ECP/Supélec (SSEC)
	EDF – Ecole Centrale Paris – SUPELEC
3 :	Chaire Radio Flexible Alcatel-Lucent/Supélec (Chaire Radio Flexible)
	SUPELEC – ALCATEL-LUCENT

Domaine

:

Informatique/Réseaux et télécommunications

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Contributeur : Sebastian Wagner <>

Soumis le : Jeudi 1 Mars 2012, 12:25:33

Dernière modification le : Jeudi 1 Mars 2012, 14:56:53