摘要
针对传统的固定步长常数模算法(CMA)收敛速度和剩余误差之间的矛盾,分析了基于指数型的变步长水声信道盲均衡算法(EVCMA),利用水声信道对该算法进行了仿真实验,获得了算法中的各参数值。根据数字信号处理器(DSP)TMS320VC5502芯片运算速度快、数据处理能力强的特点及所获得的参数,在集成开发环境(CCS)中,用C语言编写该算法代码,通过仿真调试,实现了该算法。结果表明,该算法具有收敛速度快、剩余误差小的特点,DSP实现具有较好的效果。
According to contradiction of convergence speed and residual error on traditional constant step constant modulus algorithm, underwater acoustic channel blind equalization algorithm based on variable step-size of exponential function form （EVCMA）was analyzed, simulation experiment was made by using underwater acoustic channel, various parameters were obtained in algorithm. On the basis of the features of fast operation speed and high performance processing capabilities in digital signal processor chip TMS320VC5502, and obtained parameters, algorithm code was compiled with C language in integrated development environment（ CCS） ,the algorithm was implemented by simulating and debugging. The results show that the algorithm have the feature of fast convergence and small residual error. Implementation of the algorithm by DSP have the good effect.
出处
《舰船科学技术》
2009年第8期111-114,共4页
Ship Science and Technology
基金
全国优秀博士学位论文作者专项资金资助项目(200753)
江苏省高等学校自然科学基金项目(08KJB510010
07KJB510068)
江苏省"六大人才高峰"培养对象资助项目
关键词
盲均衡
指数型
变步长
DSP
CCS
blind equalization
exponential function form
variable step-size
DSP
CCS
