An open-loop cyclostationarity-based timing recovery algorithm for accelerated timing acquisition in frequency-selective channels

We propose an open-loop symbol period estimation algorithm that can be used alone or to speed up symbol timing recovery loops. The proposed algorithm is effective in frequency selective channels, does not require the resampling of the digital received signal while estimating the symbol period, and does not require estimation of the transmitted symbols. The algorithm is performed in a computationally efficient manner. Included is a simple method of finding a DFT value for subsequent overlapping blocks of data using only one complex multiply. Simulations of the proposed algorithm show significant improvements in estimation time and reduction of jitter when compared to a Gardner timing recovery loop.