Minimization of Transmission Duration of Data Packets over an Energy   Harvesting Fading Channel
  The offline problem of transmission completion time minimization for an energy harvesting transmitter under fading is extended to allow packet arrivals during transmission. A method for computing an optimal power and rate allocation (i.e., an optimal offline schedule) is developed and studied. 
F. Mehmet Ozcelik, Goksel Uctu and Elif Uysal-Biyikoglu
cs.IT math.IT