Abstract:

A novel method is proposed to generate a low overhead cyclostationary signature for orthogonal frequency division multiplexing (OFDM) signals. Moreover, a method to detect the embedded signature is also presented. Good performance of the signature detection under the frequency-selective fading channel is guaranteed by the proposed signature signal especially for dynamic spectrum access（DSA）network. Simulations are conducted to make a comparison of the detection performance between the proposed method and the Sutton method. Relying on a single hopping subcarrier to generate the signature, the overhead of the proposed method is only one fourth that of the Sutton method in the example, and there is no loss of detection performance compared to the Sutton method.