A Symbol Rate Recognition Method Based on Regenerated Spectrum Lines
Gang Xiong · Telecommunication Engineering · 2010
In order to improve the demodulation performance of OFDM systems,a new method is proposed for the recognition of symbol rate.The spectrum lines of OFDM signals are generated by FFT then chosen appropriately for constructing the auxiliary signal,and the spectrum lines are regenerated. Furthermore,by comparing intervals of the regenerated spectrum lines and the threshold,the recognition can be performed. This method can work with low SNR. Theoretical analysis and simulation verify the effectiveness of the method. The rate of recognition is over 90% when the SNR is more than 3dB.