id: 70293201 dt: a an: 70293201 au: Huang, Pai-Han; Gai, Yi; Krishnamachari, Bhaskar; Sridharan, Ashwin ti: Subcarrier allocation in multiuser OFDM systems: complexity and approximability so: WCNC, 1-6 (2010). py: 2010 pu: la: EN cc: ut: ci: li: doi:10.1109/WCNC.2010.5506244