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【Communication-Mobile】 pcm DL : 0: 脉冲编码调制(PCM)实现编程实现PCM技术的三个过程：采样、量化与编码。采样：低通连续信号采样，以 x=sin(200*t) m=x./(200*t) m=m.*m 为例说明低通采样定理，绘出信号时、频图形；带通连续信号采样，以x=sin(20*t) m=x./t 为例说明带通采样定理，绘出信号时、频图形。量化：均匀量化，以幅度的正弦信号为例实现为64级电平的均匀量化；非均匀量化，输入A律PCM编码器的正弦信号，采样序列为，将其进行PCM编码，给出编码器的输出码组序列编码：以上述信号为例，实现A律的13折线近似法及国际标准PCM对数A律量化编码。-Pulse code modulation (PCM) to achieve PCM technology programming three processes: sampling, quantization and coding. Sample: low-pass continuous signal sampling to x = sin (200* t) m = x./(200* t) m = m.* m an example low-pass sampling theorem, draw the signal, frequency graphics bandpass sampling continuous signals to x = sin (20* t) m = x./t an example bandpass sampling theorem, draw the signal, frequency graph. Quantization: uniform quantization, in order to realize the magnitude of sinusoidal signal as an example for the 64 level uniform quantization non-uniform quantization, input A law PCM encoder sine signal, the sampling sequence, to be PCM encoded, the encoder is given The output code sequence Code: A Case Study of the signal to achieve the 13 A line approximation law and international standards on the number of A law PCM coding quantization.
Update : 2024-05-18 Size : 2048 Publisher : 马芳
【Industry research】 MPSKQAM DL : 0: 本文深入研究了复杂调制信号MPSK、MQAM的倍号子类以及常用恒包络信号OQPSK、or／4 QPSK、MSK的调制识别披本。在鳆种基本调制识别方法即基于特征提取的方法和基于最大似然的方法的纂础上采用四种算法分别对上述信号进行识别研究。-This article studies the complex modulation signals MPSK, MQAM number of times and the common sub-class of constant envelope signals OQPSK, or/4 QPSK, MSK modulation recognition of this disclosure. Abalone species in the basic modulation recognition method that is based on feature extraction methods and maximum likelihood methods based on the Article on the foundation of four algorithms to identify each of these signals.
Update : 2024-05-18 Size : 2275328 Publisher : klq
【matlab】 QPSK_DEQPSK DL : 0: OFDM系统中的QPSK调制映射和调制解映射-QPSK modulation OFDM system mapping and modem mapping
Update : 2024-05-18 Size : 1024 Publisher : hangxu
【matlab】 Couch-7Ed_US_Instructor_MatLab_Files DL : 0: 在MATLAB SMLINK中是实现通信系统方正，包括同步和解调，调制-Is realized in MATLAB SMLINK Founder communication systems, including synchronization and demodulation, modulation
Update : 2024-05-18 Size : 115712 Publisher : 董百平
【matlab】 ask DL : 0: 通信原理中，数字调制系统的2ask调制。-Communication theory, digital modulation system 2ask modulation.
Update : 2024-05-18 Size : 1024 Publisher : Angela Lie
【ELanguage】 dig_mod DL : 0: digital modulation of the bit sequence, frequency modulation, amplitude modulation, phase shift keying, frequency shift keying
Update : 2024-05-18 Size : 1024 Publisher : sherry
【VHDL-FPGA-Verilog】 msk DL : 0: msk调制verilog HDL 实现，对学习微电子的人很有帮助-msk modulation verilog HDL to achieve, people very helpful in learning Microelectronics
Update : 2024-05-18 Size : 1024 Publisher : 李博
【VHDL-FPGA-Verilog】 msk DL : 0: fsk调制的verilog源代码，对于学习通信和微电子的人应该会有帮助-fsk verilog source code modulation, communications and microelectronics for the study should be helpful people
Update : 2024-05-18 Size : 2048 Publisher : 李博
【Software Engineering】 16QAM DL : 0: 讨论了"’+,- 调制时应用不同类型和参数的滤波器对系统性能的影响/针对"’+,- 的特点.采用了存储波形累加求和法来代替一般的滤波成形.提高了调制速度/并利用其相位对称的特点将波形存储表压缩为原容量的"0$.有效地节约了存储空间-Applications are discussed " ' +,- modulation type and parameters of different filters on the system performance/characteristics for " ' +,-. Waveforms using cumulative summation of storage instead of the general filter shape. Improved modulation Speed/and use the phase symmetry of the table compression waveform storage capacity for the original " 0 $. effectively saves storage space
Update : 2024-05-18 Size : 173056 Publisher : youwei
【matlab】 8ASK DL : 0: 8ASK系统仿真，包括调制和解调。相干解调和非相干解调-8ASK system simulation, including the modulation and demodulation. Coherent detection and non-coherent demodulation
Update : 2024-05-18 Size : 1024 Publisher : liumc
【3G develop】 uncoded DL : 0: 基于高斯白噪声信道采用M-QAM调制技术的系统，分组错误概率与信噪比函数关系的matlab仿真程序-Gaussian white noise channel with M-QAM modulation system, packet error probability and SNR function of matlab simulation program
Update : 2024-05-18 Size : 7168 Publisher : 刘少智
【Communication】 coded DL : 0: awgn信道下，卷积编码与M-QAM调制相结合的系统分组错误概率与信噪比的函数关系的matlab仿真程序-awgn channel, convolutional coding and M-QAM modulation system, the combination of packet error probability and SNR is a function of the matlab simulation program
Update : 2024-05-18 Size : 8192 Publisher : 刘少智
【Program doc】 FundamentalsOfGSMcdmaOneand3GSystems DL : 0: EBook for GSM CDMA and WCDMA fundametals for the beginners. Content theGSM Radio Interface ,The GSM modulation scheme , The GSM radio carriers,The GSM power classes,The GSM bursts ,Physical and logical channels,Mapping logical channels onto physical channels, The GSM frame structure Speech transmission , ,Ciphering of controldata, Controlof the radioresource Cell selection , , Power control
Update : 2024-05-18 Size : 7289856 Publisher : Asif
【matlab】 j DL : 0: modulation classification
Update : 2024-05-18 Size : 2048 Publisher : Rhea Drean
【Industry research】 modulation DL : 0: modulation identification by wavelets methods
Update : 2024-05-18 Size : 724992 Publisher : shail
【Communication-Mobile】 modulation DL : 0: in this program all modulation technique like ASK,FSK,PSK etc are implimented
Update : 2024-05-18 Size : 7168 Publisher : shiv
【Program doc】 MODID DL : 0: This paper presents an algorithm for modulation recognition of received signals in the presence of additive white Gaussian noise (AWGN) with the use of the wavelet transform
Update : 2024-05-18 Size : 234496 Publisher : haftom
【matlab】 upload_pudn3 DL : 0: This program simulation is used to simulate the performance of Mary noncoherent FSK modulation (BFSK,4FSK,8FSK and 16FSK) in AWGN channel for SNRdB change from 0 to 12 dB and print the modulation type ,SNRdB and Bit error rate for each steps. finally the program is plot the BER versus SNRdB for four type of noncoherent FSK modulation-This program simulation is used to simulate the performance of Mary noncoherent FSK modulation (BFSK,4FSK,8FSK and 16FSK) in AWGN channel for SNRdB change from 0 to 12 dB and print the modulation type ,SNRdB and Bit error rate for each steps. finally the program is plot the BER versus SNRdB for four type of noncoherent FSK modulation
Update : 2024-05-18 Size : 1024 Publisher : ghanim
【source in ebook】 modulation DL : 0: 基于matlab仿真的调制信号详细功能实现，能完美运行，且有相关说明。-The matlab simulation-based modulation signal functions, perfect run, and instructions.
Update : 2024-05-18 Size : 3072 Publisher : 李松柏
【matlab】 IQ DL : 0: IQ调制基本原理-IQ modulation principle! ! ! ! ! ! ! !
Update : 2024-05-18 Size : 1103872 Publisher : sxmlyy

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