Subcarrier-band Allocation for Power-line Communication System

A dynamic subcarrier-band allocation algorithm based on analytic hierarchy process is proposed by researching a rate adaptive subcarrier allocation model for power-line communication systems under the various restrictions.A subcarrier by subcarrier allocation algorithm without the determinist′s preferential information and with the maximal bit to power ratio is also proposed for the comparison.The proposed algorithms and the subcarrier-band algorithm with only one subcarrier are tested in typical power-line channel scenarios,and the simulation results show that the performances of subcarrier-band algorithm with only one subcarrier are best but for its maximum complication,the performances of proposed subcarrier-band dynamic allocation algorithm with lowest complication are similar to the subcarrier by subcarrier algorithm and adjacent to the sub-carrier-band algorithm with only one subcarrier.