A simple linear precoding scheme to cancel interference
is proposed for downlimk multiuser cellular relay networks
where the available information is asymmetric between the base
station and the relay node. The interference signal from the
relay is eliminated by linear pre-pocessing at the base station
without any cooperation between the base station and the relay.
In the information asymmetric environment, it is shown that the
proposed scheme outperforms a time division multiple access
(TDMA) scheme and approaches an ideal scheme based on
dirty paper coding (DPC) in terms of capacity. An mathematical
framework for the analysis of the proposed technique is also
presented.