  In this paper, a cooperative communication network based on energy-harvesting
(EH) decode-and-forward (DF) relays is proposed. For relay nodes, there is
harvest-storage-use (HSU) structure in this system. And energy can be obtained
from the surrounding environment through energy buffering. In order to improve
the performance of the communication system, the opportunistic routing
algorithm and the generalized selection combining (GSC) algorithm are adopted
in this communication system. In addition, from discrete-time continuous-state
space Markov chain model (DCSMC), a theoretical expression of the energy
limiting distribution stored in infinite buffers is derived. Through using the
probability distribution and state transition matrix, the theoretical
expressions of system outage probability, throughput and time cost of per
packet are obtained. Through the simulation verification, the theoretical
results are in good agreement with the simulation results.
