卫星高阶调制信号通信下非线性误差修正均衡方法
发布时间：2018-08-30 16:43
【摘要】：针对现有的均衡方法计算量大、非线性误差补偿速度慢的问题,提出了一种基于幅相分离的快速非线性均衡方法。该方法首先将接收信号的幅度和相位进行分离处理,并分别通过反馈均衡模型对信号进行均衡处理以减小计算复杂度,然后利用Volterra模型对误差进行非线性修正,并通过该非线性修正误差更新反馈均衡的参数,从而快速消除非线性干扰和记忆干扰。从误码率、收敛速度和计算复杂度3个方面将所提出的方法与现有的主要均衡方法进行理论和仿真分析比较,结果表明,在相同误码率下,所提方法的计算复杂度仅为其他均衡方法的14.1%~24.9%,能够快速实现非线性干扰的消除。
[Abstract]:A fast nonlinear equalization method based on amplitude-phase separation is proposed to solve the problem of large amount of calculation and slow compensation speed of nonlinear error in existing equalization methods. Firstly, the amplitude and phase of the received signal are separated, and the signal is equalized by the feedback equalization model to reduce the computational complexity, and then the Volterra model is used to modify the error. The parameters of feedback equalization are updated by the nonlinear correction error, so that the nonlinear interference and memory interference are eliminated quickly. The theoretical and simulation results show that, under the same bit error rate, the proposed method is compared with the existing equalization methods in terms of bit error rate, convergence speed and computational complexity. The computational complexity of the proposed method is only 14.1and 24.9of the other equalization methods, and the nonlinear interference can be eliminated quickly.
【作者单位】： 西北工业大学电子信息学院;西北工业大学航海学院;
【基金】：国家自然科学青年基金资助项目(No.61501430)~~
【分类号】：TN927.2
[Abstract]:A fast nonlinear equalization method based on amplitude-phase separation is proposed to solve the problem of large amount of calculation and slow compensation speed of nonlinear error in existing equalization methods. Firstly, the amplitude and phase of the received signal are separated, and the signal is equalized by the feedback equalization model to reduce the computational complexity, and then the Volterra model is used to modify the error. The parameters of feedback equalization are updated by the nonlinear correction error, so that the nonlinear interference and memory interference are eliminated quickly. The theoretical and simulation results show that, under the same bit error rate, the proposed method is compared with the existing equalization methods in terms of bit error rate, convergence speed and computational complexity. The computational complexity of the proposed method is only 14.1and 24.9of the other equalization methods, and the nonlinear interference can be eliminated quickly.
【作者单位】： 西北工业大学电子信息学院;西北工业大学航海学院;
【基金】：国家自然科学青年基金资助项目(No.61501430)~~
【分类号】：TN927.2
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