Common and Sum Rate Optimization for Multi-carrier Energy Harvesting Wireless Networks

Farid Taei
2018
Energy harvesting techniques, which exploit ambient energy to power communications devices, have gained increased attention in recent years. Such techniques have emerged as a promising solution for energy-constrained wireless networks, with possible applications in the future Internet of things. The focus of this thesis is on multi-carrier wireless energy harvesting networks (WEHNs) where users adopt a harvest-then-transmit protocol to communicate with an access point. For such networks, we
more » ... ch networks, we study the subchannel assignment and power allocation at the users to maximize the common rate and sum rate considering the effect of channel fading and path loss on the signals. Both common rate and sum rate optimization problems result in a non-convex mixed binary optimization formulation without a known systematic solution to the best of our knowledge. That being said, we propose multiple heuristic suboptimal solutions for the rate optimization problems providing different trade-offs between computational complexity and performance. The performance of the proposed solutions are evaluated under several WEHN setups through computer simulations. ii "Information is the resolution of uncertainty." Claude E. Shannon
doi:10.7939/r3gt5fw88 fatcat:ghfby636a5aodnstibimd76oki