常数模算法,constant modulus algorithm
1)constant modulus algorithm常数模算法
1.At present,constant modulus algorithm (CMA) is widely used,but it has disadvanta- ges that the convergence speed is slow and the residual error is large.目前,常数模算法(constant modulus algorithm,CMA)应用非常广泛,但它存在收敛速度慢,剩余误差大的缺点。
2.Constant modulus algorithm is a most popular algorithm and is widely used for blind equalization of non-constant envelope signals and constant envelope signals.常数模算法是一种最为常用的盲均衡算法,普遍应用于恒包络信号和非恒包络信号的均衡,但存在收敛速度慢和剩余误差大的缺点。
3.To overcome the disadvantages of slow convergent rate and large residual mean square error (MSE) ofconstant modulus algorithm (CMA) and least mean kurtosis CMA, a square kurtosis cost function is defined as a kurtosis factor of error signals and its performance is analyzed, a least square kurtosis CMA for updating weight vectors of blind equalizer is proposed.结果表明 :该算法在收敛速度 ,收敛后的均方误差及码间干扰等方面的性能优于常数模算法与最小平均峭度恒模算法。
英文短句/例句
1.Simulation of Variable Step-size Signed-Regressor Constant Modulus Algorithms时变步长符号递归常数模算法及仿真
2.Hardware Implementation for Algorithm of Constant Modulus Based on Error Function of Hyperbolic Tangent基于双曲正切误差函数常数模算法的DSP实现
3.Research and simulation on signed-regressor constant modulus algorithm based on multi-modulus algorithm基于多模的符号递归常数模算法研究与仿真
4.Research on Spatial Diversity Blind Equalization Based on Constant Modulus Algorithm基于常数模算法的空间分集盲均衡技术
5.A signed constant modulus algorithm for equalization of underwater acoustic channel一种适合于水声信道均衡的符号常数模算法
6.Analysis of constant modulus blind equalization algorithms base on "data reuse"基于“数据重用”的常模盲均衡算法分析
7.Discussion of Monte Carlo Simulation for Computing Normalizing Constants;关于计算正规化常数的Monte Carlo模拟方法的讨论
8.DCT METHOD FOR CALCULATING VERTICAL SECOND DERIVATIVE OF GRAVITY ANOMALIES--Modeling Experiment计算重力异常垂向二阶导数的DCT法——模型实验
9.This thesis analyses thecommon penalty function method and modified coulomb friction model used for contactanalysis in sheet metal forming simulation.分析了常用的罚函数法接触算法和用于板料成形数值模拟的修正库仑摩擦模型。
10.Algorithms and DSP implementation of variable step-size based on exponential function form CM blind equalization基于指数型变步长常模水声信道盲均衡算法及其DSP实现
11.A Practice of Asset Discount Function in the Constant Coefficient Investment-consumption Model;常系数投资消费模型中资产折算函数常用
12.Generally, electronic computers are classified into two groups;the digital computer and the analogue computer.通常计算机可分为两类，数字式和模拟式计算机。
parative Study of Numerical Algorithms for "Anomalous" Diffusion Equation with Spatial Fractional Derivatives空间分数阶导数“反常”扩散方程数值算法的比较
14.Cannot evaluate non-constant expression without current row.没有当前行就无法计算非常数表达式。
15.current computational methods in numerical weatherprediction数值天气预报常用计算方法
16.A Numerical Algorithm of Singular Integrals over Rectangular Domains矩形域上非正常积分的一种数值算法
17.Excel method for calculating the value of common statistic function计算常用统计函数值的电子表格方法
18.On the Method of OperatorSolutions of the Linear Ordinary Differential Equations with Constant Coefficient;高阶常系数线性微分方程的算子解法
相关短句/例句
CMA常数模算法
1.In particular, the Constant Modulus Algorithm (CMA) has become a favorite of practitioners.常数模算法(CMA)是实际中应用最广的一种盲均衡算法。
2.Based on the constant modular algorithm (CMA), a new type of blind equalizer wit h filtering in discrete cosine transformation (DCT) domain is proposed for the amplitude- and phase-modulated digital communication systems.在常数模算法 (CMA)基础上 ,提出一种适合于多电平调幅、调相数字通信系统的基于离散余弦变换(DCT)域滤波的新型CMA盲均衡器 。
3.The problem was tackled with an evolutionary programming strategy, in which the order, as well as the taps of the equalizer were evolved simultaneously with the objective function of constant modulus algorithm (CMA) adopted a.利用模拟浅海水声信道数据进行的仿真实验结果表明:本算法可有效避免常数模算法在低估阶数时造成的性能下降,适用于未知阶数情况下的信道盲均衡。
3)constant modulus algorithm (CMA)常数模算法(CMA)
4)Sign-CMA符号常数模算法
5)mixed constant modulus algorithm混合常数模算法
6)Constant modulus algorithm常模算法
1.The method is called linear constraint conjugate gradient constant modulus algorithm based on adaptive step size.克服多址干扰对CDMA系统的影响,该文研究了CDMA下行链路中的多用户检测问题,提出了一种新的盲检测算法,即最优自适应步长的线性约束共轭梯度常模算法(M-LCCGCMA)。
2.A variable step-size multi-modulus blind equalization algorithm is proposed based on the cost function of constant modulus algorithm.讨论了常模类自适应盲均衡技术,总结了改进和设计常模类盲均衡算法的思路,在常模算法代价函数的基础上给出了一种变步长多模算法。
3.This paper studies blind multi-user receive technology,using constant modulus algorithm to stimulate capacity of different algorithms and evaluate two constant modulus algorithms by calculating output SIR and BER.本文研究的是CDMA下行链路的盲多用户接收技术,采用常模算法,针对不同的算法性能进行仿真。
延伸阅读
凹模、凸凹模工作型面加工工艺过程1)备料。 n 2)锻造。锻成长方形的坯料(每件留长工艺夹头)。 n 3)热处理。退火。 n 4)铣(刨)削。铣(刨)削六面成长方形模块。 n 5)磨削。磨削上、下两端面及相邻两侧面，用90。角尺测量相邻两面的垂直度。 n 6)钳工加工。用平板和划线盘按图划线，并打样冲眼；用钻头钻螺纹底孔；用圆柱销孔的预孔；用钻头钻挡料销让位孔；用钻头在中心处钻穿丝孔等；正、反面孔口倒角；凸凹模用钻头孔扩，保证刃口高度；攻螺纹；铰孔。n7)铣削。平口钳装夹工件；用的立铣刀铣削型孔至尺寸，保证深度。 n 8)热处理。凹模工件淬硬至HRC60～64，凸凹模工件淬硬至HRC58～62。 n 9)平磨。磨上、下两端面及相邻两侧面，用90。角尺测量相邻两面的垂直度至图要求；退磁。 n 10)线切割。按图编制线切割程序，切割模型孔成形，留单面研磨余量0.005 mm。 n 11)钳工加工。研光线切割面： n 12)检验。 n复合冲裁模的装配应选择凸凹模作为装配基准件，先装下模部分，后装上模部分
