LINK ADAPTATION IN COMMUNICATION NETWORK APPLYING DEMODULATE-AND-FORWARD RELAY NODES

摘要

There is provided a method, an apparatus and a computer program for improving transmission efficiency in a relay enhanced communication network. The method, comprises: determining a transmission efficiency for each candidate modulation format pair, the modulation format pair comprising a first modulation format for a first radio propagation channel between a source node and a demodulate- and-forward relay node and a second modulation format for a second radio propagation channel between the demodulate-and-forward relay node and a target node; and selecting the modulation format pair for data transmission between the source node and the target node via the demodulate-and-forward relay node, on the basis of the determined transmission efficiency.