Achievable Sum-Rate Analysis of Massive MIMO Full-Duplex Wireless Backhaul Links in Heterogeneous Cellular Networks

Energy-Efficient Joint Design of Fronthaul and Edge Links for Cache-Aided C-RAN Systems with Wireless Fronthaul

“…No edge caching [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]31,34,39] With edge caching [21][22][23][24][25][26][27][28]40], this work…”

“…Max. spectral efficiency [4][5][6][7][8][9][10][13][14][15][16][17][18]26,39] Min. delivery latency [23,27,40] Min.…”

“…Algorithm 1 CCCP-based algorithm for problem (18). The proposed CCCP algorithm is an instance of the successive convex approximation (SCA) approach [42], whose worst-case order of complexity is given as O(N itr √ N const log(N const / )) [43].…”

“…One of major challenges of implementing C-RAN systems is the overhead on the fronthaul links connecting CPs and RRHs [3][4][5][6][7][8][9][10]. The overhead becomes particularly serious when one adopts cost-effective wireless fronthaul links (see, e.g., [11][12][13][14][15][16][17][18][19]).…”

“…Initialize the variables Θ ,F ,T and Ω that satisfy the constraints of the problem(18). Update Θ ,F ,T and Ω as an optimal solution of the (convex) problem (A1) in Appendix A.…”