7ZHANG Xun-yong, HE Chen, JIANG Ling-ge, et al. Inter-cell Interference Coordination Based on Softer Frequency Reuse in OFDMA Cellular Systems [ J]. IEEE Int. Conference Neural Networks & Signal Processing,2008(6) :8 - 10.
83GPP TR 25.814 V7.1.0. Physical Layer Aspects for Evolved Universal Terrestrial Radio Access[S].