A Multi-parameter Joint Demodulation Algorithm Based on Alternating Projection

摘要

For unknown synchronization parameters symbol detection problem, this paper gives the joint estimation processing structure of symbol detection and carrier phase based on alternating projection. For the traditional hierarchical approach, carrier phase estimation is required before symbol detection. the traditional optimum reception algorithm, parameter estimation and symbol detection will be optimized separately, that may not get a global joint optimal solution. This paper studies this problem, and proposes a multi-parameter joint processing algorithm based on alternating projection. Simulation results show that the algorithm outperforms the traditional optimum reception algorithm, which estimates the carrier phase using the non-data-aided method before symbol detection. Simulation results show that the algorithm can effectively enhance the performance of joint detection.