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In this paper, we analyze the capacity of a multiple input multiple output (MIMO) channel with impulsive noise interference. The Middleton class A model of electromagnetic interference has been employed to model the power line communication (PLC) channel. PLC can utilize MIMO to increase data rate and performance gain. However, an expression for the channel capacity of MIMO power line channel with...
Coordinated multipoint transmission (CoMP) is considered for a heterogeneous network where different kinds of base stations (BSs) are located. We present a system level simulator for investigating the gains that can be achieved from the use of cooperative transmission (CoMP) in an urban heterogeneous cellular environment. It is shown that the spectral efficiency of the users located within a macro-cellular...
Coordinated multipoint transmission (CoMP) is considered for a heterogeneous network where different kinds of base stations (BS) are located. We focus on linear transceiver design with the goal of maximizing the weighted sum rate in the downlink of a multiple-input multiple-output orthogonal frequency division multiple access (MIMO-OFDMA) system. The problem is shown to be non-convex, thus, the problem...
Coordinated multipoint transmission (CoMP) is considered for a heterogeneous network where different kinds of base stations (BSs) are located. We focus on linear transceiver design with the goal of maximizing the weighted sum rate in the downlink of a multiple-input multiple-output orthogonal frequency division multiple access (MIMO-OFDMA) system, where each subchannel is allocated to a single user...
Coordinated multipoint transmission (CoMP) is considered for a heterogeneous network where different kinds of base stations (BS) are located. We focus on linear transceiver design including user scheduling with the goal of maximizing the weighted sum rate in the downlink of a multiple-input multiple-output orthogonal frequency division multiple access (MIMO-OFDMA) system, where each subchannel is...
We investigate the resource allocation problem for the downlink of a spatial multiplexing (SM) based multiple input multiple output orthogonal frequency division multiple access (MIMO-OFDMA) based network. We address this problem in the context of the utility-based resource allocation presented in earlier papers in order to enhance the efficiency and guarantee fairness among users by exploiting multiuser...
Femtocells have become an attractive approach for operators to offer extended services on their licensed UMTS/LTE spectrum. They are typically deployed indoors to improve coverage and provide high data rates. Cellular operators benefit from reduced infrastructure and operational expenses for capacity upgrades and coverage improvements. As a drawback, femtocells may cause interference to other femtocells...
We consider a multiuser multiple-input multiple output (MIMO) Gaussian broadcast channel (BC). Assuming a sum-power constraint over all transmit antennas, the sum capacity of such a system can be achieved with dirty paper coding (DPC) which has been found as a very promising strategy. Rather than the usual sum-power constraint, in this paper we focus on the downlink of a cooperative multicellular...
We investigate the resource allocation problem for the downlink of a multiple-input multiple-output orthogonal frequency division multiple access (MIMO-OFDMA) system. The sum rate maximization itself cannot cope with fairness among users. Hence, we address this problem in the context of the utility-based resource allocation presented in earlier papers. This resource allocation method allows to enhance...
In this paper, the downlink power control problem in decentralized orthogonal frequency division multiple access (OFDMA) networks is addressed. First, the optimization problem which minimizes the overall transmission power subject to individual rate and power constraints in a decentralized network is considered. An optimal solution requires global link information. However, obtaining such information...
A dynamic system level simulator for LTE networks was developed for investigating the interference behaviour of femtocells placed within macrocells. We simulate a multi-cell, multi-user and multi-carrier system in the downlink for Single-Input, Single-Output (SISO) and Multiple-Input, Multiple-Output (MIMO) antenna configurations.
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