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# Table 2 Proposed RPA algorithm

From: Robust power allocation for two-tier heterogeneous networks under channel uncertainties

Proposed algorithm |
---|

1:Initialize maximum iteration number |

multipliers \(\lambda (0) > 0,\{\mu _{i}^{k}\}(0) > 0,\) and \(\{\xi _{i}^{k}\}(0) > 0\); step sizes |

upper bound of estimation error in MU-to-FBS link is |

upper bound of estimation error in femtocell link is |

upper bound of estimation error in FU-to-MBS link is |

2:Set maximum transmit power \(p_{i}^{k,max} >0\) and initialize power \(p_{i}^{k} >0\) with different initialization |

values among different FUs and MUs. |

3:Define interference |

4: |

5: |

6: |

7: |

8: Calculate transmit power \(p_{i}^{k*}\) according to (26); |

9: Calculate actual SINR received at FU-Rx according to (2) and (26); |

11: Calculate Lagrange multipliers \(\lambda,\mu _{i}^{k},\) and \(\xi _{i}^{k}\) from (31) - (33); |

12: |

13: |

13 |

14: |

15: |