Hakeem Saif - Academia.edu (original) (raw)

Uploads

Papers by Hakeem Saif

Research paper thumbnail of Novel Intercell Interference Mitigation Algorithms for Multicell OFDMA Systems With Limited Base Station Cooperation

—Resource allocation in multicell downlink orthogonal 5 frequency division multiple-access (OFDMA... more —Resource allocation in multicell downlink orthogonal 5 frequency division multiple-access (OFDMA) systems is investi-6 gated, where base stations (BSs) first independently carry out 7 subcarrier allocation and then mitigate intercell interference 8 (InterCI) with the aid of very limited BS cooperation. Two novel 9 InterCI mitigation algorithms are proposed. The first one is the 10 distributed decision making assisted cooperation (DDMC) algo-11 rithm, and the second one is the centralized decision making 12 assisted cooperation (CDMC) algorithm. When employing the 13 DDMC algorithm, each BS independently makes the InterCI 14 mitigation decisions (IMDs). By contrast, when employing the 15 CDMC algorithm, the centralized IMDs are made with the aid of 16 the cell-edge users' discrete InterCI information sharing among 17 BSs. While both algorithms motivate maximization of the spectral 18 efficiency (sum rate), the CDMC algorithm also aims to maximize 19 the frequency reuse factor. In this paper, we study and compare 20 the performance, including spectral efficiency of cell-edge users, 21 frequency reuse factor, and overhead, of the multicell downlink 22 OFDMA systems employing the proposed and other InterCI mit-23 igation algorithms. Our studies show that both the DDMC and 24

Research paper thumbnail of Novel Intercell Interference Mitigation Algorithms for Multicell OFDMA Systems With Limited Base Station Cooperation

—Resource allocation in multicell downlink orthogonal 5 frequency division multiple-access (OFDMA... more —Resource allocation in multicell downlink orthogonal 5 frequency division multiple-access (OFDMA) systems is investi-6 gated, where base stations (BSs) first independently carry out 7 subcarrier allocation and then mitigate intercell interference 8 (InterCI) with the aid of very limited BS cooperation. Two novel 9 InterCI mitigation algorithms are proposed. The first one is the 10 distributed decision making assisted cooperation (DDMC) algo-11 rithm, and the second one is the centralized decision making 12 assisted cooperation (CDMC) algorithm. When employing the 13 DDMC algorithm, each BS independently makes the InterCI 14 mitigation decisions (IMDs). By contrast, when employing the 15 CDMC algorithm, the centralized IMDs are made with the aid of 16 the cell-edge users' discrete InterCI information sharing among 17 BSs. While both algorithms motivate maximization of the spectral 18 efficiency (sum rate), the CDMC algorithm also aims to maximize 19 the frequency reuse factor. In this paper, we study and compare 20 the performance, including spectral efficiency of cell-edge users, 21 frequency reuse factor, and overhead, of the multicell downlink 22 OFDMA systems employing the proposed and other InterCI mit-23 igation algorithms. Our studies show that both the DDMC and 24

Log In