A Symbol Rate Blind Estimation Algorithm of Baseband Signal

摘要

Accurate estimation of symbol rate is an important part of the electronic information countermeasures. In this article, the cyclic spectrum density expression of band-limited baseband signal is derived. And analysed it's characteristics. A new blind estimation algorithm of symbol rate based on cyclic spectrum is presented. This algorithm don't need the information of modulation type. It is insensitive of carrier frequency offset, and have good performance in low SNR. The effectiveness of this algorithm is proved by computer simulations.