8Lyles U J, Copani T, Bakkaloglu B, et al. An injection-locked frequency-tracking EA direct digital frequency synthesizer[J]. IEEE Trans on Circuits Syst-lI: Express Briefs, 2007, 54(5): 402-406.
9Ashrafi A, Adhami R. Theoretical upperbound of the spurious-free dynamic range in direct digital frequency synthesizers realized by polynomial interpolation methods[J]. IEEE Trans on Circuits Syst-I: Regular Papers, 2007, 54(10): 2252-2261.
10SHEN Li-quan, LIU Zhi, ZHANG Zhao-yang, et al. Frame-level bit allocation based on incremental PID algorithm and frame complexity estimation[J]. Journal of Visual Communication and Image Representation, 2009, 20(1): 28-34.