RESOURCE ALLOCATION IN LTE – BASED WIRELESS NETWORKS
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN MOBILE NETWORKS AND COMMUNICATION
Author(s): RUDOLF MATHAR , SHALINI TEWARAS
Abstract: In this paper, resource allocation for heterogeneous downlink is studied in orthogonal frequency division multiple access (OFDMA) systems unicasting by multiple base stations (BSs). First, this paper formulates the resource allocation problem which is designed to maximize the sum rate of non-real time transmission while satisfying the quality-of-service (QoS) requirement of both the real time and non-real time transmission. In the considered scenario, each user is restricted to being covered by one BS, while each subcarrier is assigned to at most one user. Furthermore, due to frequency reuse in long term evolution (LTE) lead to unacceptable interference levels experienced by user equipment that is very far from its serving BS in a multi-cellular system. The herein proposed dynamic fractional frequency reuse scheme is a step forward towards effective inter-cell interference coordination in wireless networks. Simulations demonstrate that the proposed method provides a comparable performa
- Publication Date: 11-Apr-2012
- DOI: 10.15224/978-981-07-3161-8-153
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FOURIER TRANSFORM AND DISTANCE DISTRIBUTION FUNCTION: NEW INSIGHTS INTO DATA ANALYSIS
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN ELECTRONICS DEVICES AND CIRCUITS
Author(s): SHIV KUMAR SINGH
Abstract: We revisit the standard procedure for analyzing the static light intensity curves I(q) measured in scattering from chemical/biological samples as done in the literature. By utilizing some algebraic properties of Fourier integrals we show that; i) the theoretical forward intensity I(0) extracted via the Glatter/Moore algorithm must be consistently higher than all peaks occurring in the input I(q) curve ; ii) the attenuated oscillations of input I(q) data at intermediate q may be a direct consequence of the presence of a bump in the output distance distribution profile P(r) ; iii) if the input intensity is modified by the Gaussian damping factor exp (-Kq2) then extrapolation of the output results down to K = 0 is liable to become numerically unstable ; and iv) due to the exp (-Kq2) artifact the output distance distribution function profile may exhibit a bump having the correct location but wrong width if K is nonzero.
- Publication Date: 11-Aug-2012
- DOI: 10.15224/978-981-07-3161-8-125
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