Cyclotomic FFT of Length 2047 Based on a Novel 11-point Cyclic   Convolution
  In this manuscript, we propose a novel 11-point cyclic convolution algorithm based on alternate Fourier transform. With the proposed bilinear form, we construct a length-2047 cyclotomic FFT. 
Meghanad D. Wagh, Ning Chen, and Zhiyuan Yan