Cooperative transmission scheme in MIMO relay broadcast channels

  title={Cooperative transmission scheme in MIMO relay broadcast channels},
  author={Zhendong Zhou and Leilei Wu and Wibowo Hardjawana and Branka Vucetic},
  journal={2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications},
We consider relay broadcast channels (RBCs) with multiple antennas at all nodes. A practical precoding, relaying and combining scheme is proposed. Under an overall power constraint, we derive the optimal power allocation solution in a closed form. The conditions for an effective RBC scheme are identified with a qualitative analysis to the relationship between the relay gain and the relative strengths of the direct and relay links. Simulation results are shown for various channel configurations… CONTINUE READING