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[Speech/Voice recognition/combine] 接收机的MATLAB仿真程序 DL : 0: Title: MMSE Receiver for DS-SS in AWGN Channel Author: Panson Tantikovit Summary: An adaptive receiver for DS-SS systems MATLAB Release: R12.1 Required Products: Communications Toolbox,Signal Processing Blockset Description: This is an adaptive receiver for a direct-sequence spread spectrum (DS-SS) system over an AWGN channel. The adaptive receiver block is modified from the LMS adaptive filter block in DSP Blockset. For DS-SS signal reception, the adaptive filter needs to have multi-rate operation. The input sample rate is equal to chip rate and the output is at symbol rate. Two rates are related by PG, processing gain. -Title: MMSE Receiver for DS-SS in AWGN Channel Author: Panson Tantikovit Summary: An adaptive receiver for DS-SS systems MATLAB Release: R12.1 Required Products: Communications Toolbox,Signal Processing Blockset Description: This is an adaptive receiver for a direct-sequence spread spectrum (DS-SS) system over an AWGN channel. The adaptive receiver block is modified from the LMS adaptive filter block in DSP Blockset. For DS-SS signal reception, the adaptive filter needs to have multi-rate operation. The input sample rate is equal to chip rate and the output is at symbol rate. Two rates are related by PG, processing gain.
Date : 2008-10-13 Size : 19.66kb User : zzp
[Speech/Voice recognition/combine] DSPII_exp1 DL : 0: DSP II作业，有关LMS的计算机练习题-II DSP operations, the LMS Computer Exercises
Date : 2008-10-13 Size : 2.5kb User : 周姗姗
[Speech/Voice recognition/combine] J005241 DL : 1: 主要研究用于声音通讯系统中的声回波抵消技术。声回波抵消通常采用声回波抵消器来实现。具体方法是用自适应滤波器来估计回波信号，并从麦克风信号中减掉该估计值，从而实现声回波的抵消。回波抵消器中常用的几种自适应滤波算法有LMS, NLMS, RLS等算法。对现有主要算法的性能进行了分析，并对优缺点进行评价和比较。为了在收敛速度和运算量之间得到很好的折衷，对NLMS算法改进，得到了 PNLMS算法，对传统的快处理块算法改进，得到了精确块算法。综合两个算法，获得了一种基于回波路径冲击响应稀疏性和精确块技术的自适应算法(BEPNLMS), 并对该算法作了详细的分析和研究。针对具体应用以及DSP芯片的特点，结合 BEPNLMS算法，给出了一种基于TMS320VC5402 DSP实现回波抵消的软硬件设计方案。对主要模块电路的设训作了详细介绍，画出了自适应算法和语音检测流程图，写出了各模块程序的主要部分。最后，对新算法的收敛性和计算复杂度等主要性能作了验证，说明本算法可行并满足各项指标要求。
Date : 2008-10-13 Size : 2.71mb User : hbeishang
[Speech/Voice recognition/combine] 接收机的MATLAB仿真程序 DL : 0: Title: MMSE Receiver for DS-SS in AWGN Channel Author: Panson Tantikovit Summary: An adaptive receiver for DS-SS systems MATLAB Release: R12.1 Required Products: Communications Toolbox,Signal Processing Blockset Description: This is an adaptive receiver for a direct-sequence spread spectrum (DS-SS) system over an AWGN channel. The adaptive receiver block is modified from the LMS adaptive filter block in DSP Blockset. For DS-SS signal reception, the adaptive filter needs to have multi-rate operation. The input sample rate is equal to chip rate and the output is at symbol rate. Two rates are related by PG, processing gain. -Title: MMSE Receiver for DS-SS in AWGN Channel Author: Panson Tantikovit Summary: An adaptive receiver for DS-SS systems MATLAB Release: R12.1 Required Products: Communications Toolbox,Signal Processing Blockset Description: This is an adaptive receiver for a direct-sequence spread spectrum (DS-SS) system over an AWGN channel. The adaptive receiver block is modified from the LMS adaptive filter block in DSP Blockset. For DS-SS signal reception, the adaptive filter needs to have multi-rate operation. The input sample rate is equal to chip rate and the output is at symbol rate. Two rates are related by PG, processing gain.
Date : 2025-12-24 Size : 19kb User : zzp
[Speech/Voice recognition/combine] DSPII_exp1 DL : 0: DSP II作业，有关LMS的计算机练习题-II DSP operations, the LMS Computer Exercises
Date : 2025-12-24 Size : 2kb User : 周姗姗
[Speech/Voice recognition/combine] J005241 DL : 0: 主要研究用于声音通讯系统中的声回波抵消技术。声回波抵消通常采用声回波抵消器来实现。具体方法是用自适应滤波器来估计回波信号，并从麦克风信号中减掉该估计值，从而实现声回波的抵消。回波抵消器中常用的几种自适应滤波算法有LMS, NLMS, RLS等算法。对现有主要算法的性能进行了分析，并对优缺点进行评价和比较。为了在收敛速度和运算量之间得到很好的折衷，对NLMS算法改进，得到了 PNLMS算法，对传统的快处理块算法改进，得到了精确块算法。综合两个算法，获得了一种基于回波路径冲击响应稀疏性和精确块技术的自适应算法(BEPNLMS), 并对该算法作了详细的分析和研究。针对具体应用以及DSP芯片的特点，结合 BEPNLMS算法，给出了一种基于TMS320VC5402 DSP实现回波抵消的软硬件设计方案。对主要模块电路的设训作了详细介绍，画出了自适应算法和语音检测流程图，写出了各模块程序的主要部分。最后，对新算法的收敛性和计算复杂度等主要性能作了验证，说明本算法可行并满足各项指标要求。-err
Date : 2025-12-24 Size : 2.71mb User : hbeishang