Research and implementation of high-speed and low-complexity reconfigurable L&R algorithm.

A high-speed, low-complexity, reconfigurable frequency offset recovery implementation scheme based on the L&R (Luise and Reggiannini) algorithm is proposed to meet the high-speed and high-reliability requirements of the satellite payload data transmission system. The function of the algorithm is decomposed and modularized to facilitate the implementation of the algorithm logic architecture. The decomposed autocorrelation function modules are reused to reduce the resource consumption of the multiplier. The autocorrelation function of the pilot is superimposed in multiple sections to improve the accuracy of the L&-R algorithm. The results show that the demodulation performance loss of the high-speed, low-complexity, reconfigurable frequency offset recovery scheme is close to 0 dB. Compared with the direct structure, the optimized algorithm can reduce the multiplier consumption by 92. 59%, and the decomposed autocorrelation function module has reusability and reconfiguration. The algorithm can work at operating frequency up to 370. 37 MHz, which has an extremely high application value in high-speed receivers. [ABSTRACT FROM AUTHOR]