Pawel Sroka

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Two main draft standards were submitted in October 2009 as candidate technologies for IMT-Advanced, namely IEEE 802.16m and 3GPP LTE-Advanced. However, several details on their functionalities are still open and the research community is racing towards the complete definition of the revolutionary next fourth generation mobile, 4G. In this framework the(More)
This document presents the system design results for the Metropolitan Area deployments of WINNER system concept, and the associated performance assessment results. The focus of the work has been on items for which the special features of system deployments in these environments are especially challenging. Executive Summary WINNER project develops a new(More)
In this paper we study the interference management in two-tier cellular system from a game theoretic perspective. We extend the work given in [1], [2] to apply the game theoretic approach based on correlated equilibrium and regret-matching learning to multi-tier decentralized interference mitigation. The proposed approach requires periodic information(More)
In this paper a study on different Radio Resource Management (RRM) methods employed in a multi-carrier cellular system is presented. This work focuses on the rate-adaptive resource allocation (sub-carriers and power), as well as the utilitybased packet scheduling algorithms. The objective of the paper is to study the trade-off between system spectral(More)
This deliverable summarizes the most promising enabling techniques for LTE-A and beyond in seven major areas. A description of the most relevant scenarios where the techniques can be used is given. Further the end-2-end performance approach is presented. Finally future research directions of enabling techniques beyond LTE-A are given. Executive Summary In(More)
—In this paper the problem of sum-rate maximization for secondary cognitive users (SU) in presence of a primary user (PU) transmission is considered. We assume that all of the users are equipped with multiple transmit/receive antennas and that the cognitive users must not induce more interference to the primary users than it is defined in the permissive(More)
A novel computationally efficient time-domain equalizer for ADSL and VDSL transceivers is introduced. First, the algorithm of its coefficients' calculation is presented. It is particularly simple and easy for implementation at the cost of its minor suboptimality. Performance of the proposed equalizer in comparison with a few selected equalizers designed(More)