Resource allocation for maximizing weighted sum of per cell min-rate in multi-cell DF relay aided downlink OFDMA systems

Weighted sum throughput maximisation for cooperative relay‐aided multi‐cell orthogonal frequency division multiple access cellular networks considering partial fairness

“…In this way, addressing the foregoing issues, there are so many papers in the literature about interference management and efficient resource allocation for cellular networks using infrastructure relaying [8][9][10][11][12][13][14][15][16][17][18][19][20][21]. All these works could be divided into two general categories:…”

Sum rate maximization for multi-cell downlink OFDMA with subcarrier pair-based opportunistic DF relaying

“…However, in next-generation cellular systems, aggressive frequency reuse is recommended due to its ability to achieve higher system capacity [26]. When the frequency reuse factor is high or even up to 1, the CCI becomes a key factor affecting the system performance and thus cannot be ignored [27,28].…”

Distributed algorithms for sum rate maximization in multi-cell downlink OFDMA with opportunistic DF relaying

“…However, due to its ability to achieve higher system capacity, aggressive frequency reuse is recommended in the next generation cellular systems [24]. When the frequency reuse factor is high, the CCI becomes a key factor affecting the system performance and thus cannot be ignored [25,26].…”

“…However, these methods cannot be extended directly to solve RA problems jointly optimizing transmission mode selection, subcarrier assignment (MSSA), as well as power allocation (PA) in multi-cell OFDMA systems with opportunistic DF relaying. Concerning the opportunistic DF protocol in multi-cell relayed OFDMA systems, [25] and [26] have recently proposed joint RA schemes to maximize the sum rate over all cells and the weighted sum of each cell min-rate, respectively. However, the proposed centralized algorithms (CAs) seem to be quite heavy to implement in practice.…”