Abstract:

Aiming at the traditional signal detection algorithms that cannot effectively deal with the inter carrier interference problem,this paper proposes an improved iterative parallel interference cancellation signal detection algorithm based on the Gauss Seidel algorithm.The proposed algorithm first uses the Gaussian Seidel algorithm with adaptive iterations to obtain the rough estimation of the signal to be detected,and then uses the iterative parallel interference cancellation algorithm to iteratively optimize the initial solution,and introduces the early update mechanism in the iterative process.Simulation results show that the detection performance of the proposed algorithm is better than that of the traditional iterative parallel interference cancellation algorithm in LTE-V2X communication systems,and approaches the performance of the optimal initial solution algorithm.The algorithm proposed in this paper achieves a better detection performance with a lower computational complexity,which provides a new idea for the design of the signal detection algorithm for LTE-V2X systems.

Key words: long term evolution-vehicle to everything, signal detection, single-carrier frequency division multiple access, inter carrier interference