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                          <header>
                              <identifier>oai:research.chalmers.se:158779</identifier>
                              <datestamp>2018-03-06T13:52:59Z</datestamp>
                              <setSpec>openaire</setSpec>
                          </header>
                          <metadata>
                              <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
                                  <dc:title>Resource allocation for clustered network MIMO OFDMA systems</dc:title>
                                  <dc:identifier>https://research.chalmers.se/en/publication/158779</dc:identifier>
                                  <dc:date>2012</dc:date>
                                              <dc:creator>Li, Jingya</dc:creator>
                                              <dc:creator>Botella Mascarell, Carmen</dc:creator>
                                              <dc:creator>Svensson, Tommy</dc:creator>
                                                  <dc:subject>Telecommunications</dc:subject>
                                                  <dc:subject>Signal Processing</dc:subject>
                                              <dc:subject>OFDMA</dc:subject>
                                              <dc:subject>interference coordination</dc:subject>
                                              <dc:subject>frequency reuse</dc:subject>
                                              <dc:subject>network MIMO</dc:subject>
                                              <dc:subject>resource allocation</dc:subject>
                                          <dc:description>In this paper, we address the resource allocation problem for the downlink of a large network MIMO OFDMA system with 3-sector base stations (BSs). The system is statically divided into a number of disjoint clusters of sectors. A two-step resource allocation scheme is proposed involving the inter-cluster and the intra-cluster levels. As a first step or inter-cluster level, two cooperative frequency reuse approaches are designed to mitigate the inter-cluster interference. A user partition method is proposed to divide the users of each cluster into cluster-edge and cluster-center users. To balance the cell-edge and the cell-average performance, a fairness jug function is introduced to determine the frequency partition of the cooperative frequency reuse approaches. Then, as a second step or intra-cluster level, a utility-based joint scheduling and power allocation algorithm is proposed for each cluster, to maximize the sum utility of all users in the cluster under per-sector power constraints. Zero-forcing joint transmission is used across multiple sectors within the same cluster. Simulation results show that the proposed scheme can efficiently reduce the inter-cluster interference and provide considerable performance improvement in terms of both the cell-edge and cell-average user data rate. The proposed two-step resource allocation scheme can be implemented independently in each cluster without inter-cluster information exchange, which is an attractive property for practical systems, since it reduces both the network signaling overhead and the computational complexity.</dc:description>
                                                                  <dc:relation>info:eu-repo/grantAgreement/EC/FP7/247223//Advanced Radio Interface Technologies for 4G Systems (ARTIST4G)/</dc:relation>
                                                  <dc:relation>info:eu-repo/semantics/altIdentifier/doi/10.1186/1687-1499-2012-175</dc:relation>
                                          <dc:type>info:eu-repo/semantics/article</dc:type>
                                          <dc:source>Eurasip Journal on Wireless Communications and Networking (1687-1472) vol.2012(2012)</dc:source>
                                                      <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:language>eng</dc:language>
                                  <dc:audience>Researchers</dc:audience>
                                  <dc:format>application/pdf</dc:format>
                              </oai_dc:dc>
                          </metadata>
                      </record>