Ding Le，Yin Qinye，Deng Ke，et al．A computationally efficient transmit power and bit allocations algorithm for wireless OFDM systems[J]．Journal of Electronics & Information Technology，2007，29(7)：1537-1541．
[4]
Wong C Y，Cheng R S，Letaief K B，et al．Multiuser OFDM with adaptive subcarrier bit and power allocation[J]．IEEE Journal on Selected Areas in Communications，1999，17(10)：1747-1758．
[5]
Zhou Kainan，Chew Y H．Heuristic algorithms to adaptive subcarrier-and-bit allocation in multiclass multiuser OFDM systems[C]// IEEE VTC．NJ：IEEE Piscataway，2006：1416 -1420．
[6]
Zhang Guodong．Subcarrier and bit allocation for real-time services in multiuser OFDM systems[C]// IEEE ICC．NJ USA：IEEE Piscataway，2004：2985-2989．
[7]
Yu Guanding，Zhang Zhaoyang，Chen Yan．A novel resource allocation algorithm for real-time Services in multiuser OFDM systems[C]// IEEE VTC．NJ USA：IEEE Piscataway，2006：1156-1160．
Jang Jiho，Lee K B．Transmit power adaptation for multiuser OFDM systems[J]．IEEE Journal on Selected Areas in Communications，2003，21(2)：171-178．
[10]
Yu Guanding，Zhang Zhaoyang，Chen Yan，et al．Subcarrier and bit allocation for OFDMA systems with proportional fairness[C]// IEEE WCNC．NY：IEEE Inc，2006：1717-1722．
