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nbldpc

于 2020-08-25 发布文件大小:24KB

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下载积分: 1 下载次数: 41

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代码说明：

多元ldpc编译码matlap程序，采用bp译码算法(Multiple LDPC coding and decoding)

文件列表：

nbldpc\bits_smbl_msg.asv, 1635 , 2018-04-28
nbldpc\bits_smbl_msg.m, 1630 , 2018-04-25
nbldpc\bp.asv, 2900 , 2018-04-28
nbldpc\ldpc_decode.asv, 13345 , 2018-04-22
nbldpc\ldpc_decode_q.asv, 11779 , 2018-04-26
nbldpc\ldpc_decode_q.m, 11778 , 2018-04-26
nbldpc\ldpc_encode.asv, 1614 , 2018-04-26
nbldpc\ldpc_encode.m, 1608 , 2018-05-08
nbldpc\ldpc_H.asv, 2520 , 2018-04-25
nbldpc\ldpc_H.m, 2530 , 2018-04-25
nbldpc\ldpc_H2G.asv, 4639 , 2018-04-28
nbldpc\ldpc_H2G.m, 4634 , 2018-04-26
nbldpc\main.asv, 1310 , 2018-04-28
nbldpc\main.m, 1386 , 2018-04-26
nbldpc, 0 , 2018-04-26

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ZHAO_OFDM
这个程序除了接收机同步、信道编码没有加入外，基本上反映了一个OFDM系统的特性： 1. qpsk/16qam/64qam映射、解映射 2. OFDM调制解调（循环前缀，FFT等） 3. 非整数采样时刻多径时延的多径信道 4. Rayleigh或者Rician多径信道 5. 信道的连续时变（非block fading） 6. 线性插值信道估计 7. FFT变换域插值信道估计(In addition to this program receiver synchronization, channel coding have not joined, the basically reflect the characteristics of an OFDM system: 1. Qpsk/16qam/64qam mapping, mapping solution 2. OFDM modulation and demodulation (cyclic prefix, FFT, etc.) 3. Non- integer sampling instant multi-path delay of multi-path channel 4. Rayleigh or Rician multipath channel 5. a continuous time-varying channel (non-block fading) 6. linear interpolation channel estimation 7. FFT transform domain interpolation channel estimation)

2010-03-04 22:12:43下载

积分：1
terminal3
说明：该资源为应用GNUradio工具，对USRP的开发，主要实现了频谱感知，以及根据频谱感知的结果进行ofdm通信的功能(This resource is the development of USRP using gnuradio tool. It mainly realizes the function of spectrum sensing and OFDM communication according to the result of spectrum sensing)

2020-03-04 12:10:50下载

积分：1
代码
信号处理、检测。CHAP全称是PPP（点对点协议）询问握手认证协议（Challenge Handshake Authentication Protocol）。(Noise, signal processing, detection, waveform. The full name of CHAP is PPP (Point-to-Point Protocol) Challenge Handshake Authentication Protocol.)

2020-06-18 20:20:02下载

积分：1
OFDM-basedwirelesschannelmodelingandsimulation
基于OFDM无线信道特性建模与仿真,这是一篇很好的解释，OFDM信道模型建立的论文，对于这方面的仿真有很大的参考意义。(OFDM-based wireless channel modeling and simulation, this is a good explanation, OFDM channel model of the paper, the simulation for this great reference value.)

2010-09-20 10:46:19下载

积分：1
Turbo Equalization
说明： turbo均衡，用于多径信道提升性能，map、SISO算法，PSK和QAM调制(Turbo Equalization, for multipath channel to improve performance, map, SISO algorithm, PSK and QAM modulation)

2021-04-25 21:08:46下载

积分：1
indirect-addressing-method-
详细介绍了西门子PLC的间接寻址方法，对于应用西门子PLC很有用处。(Detailed the the Siemens PLC indirect addressing method is useful for the application of the Siemens PLC.)

2013-02-01 11:42:13下载

积分：1
feng_uj11
音频信号通过LM386放大，包括四元数的各种计算,D-S证据理论数据融合。( LM386 audio signal amplification, Including quaternion various calculations, D-S evidence theory data fusion.)

2017-04-25 17:47:26下载

积分：1
polar for sc
用SC译码算法进行极化码的解码，经典方法(Decoding of polarization codes with SC decoding algorithm)

2020-11-28 20:39:28下载

积分：1
frency_estiamte
OQPSK信号的频率估计，用的是相位与时钟联合估计算法，适用于突发的卫星信号等(OQPSK signal frequency estimation, using a phase estimation algorithm combined with the clock for emergency satellite signals)

2010-08-20 09:58:42下载

积分：1
aliasingfilter
1）设计Butterworth型音频抗混叠滤波器； 2）参数：下通带频率300Hz；上通带频率3400Hz；下阻带频率280Hz；上阻带频率3600Hz；通带最大衰减0.3dB；阻带最小衰减40dB； 3）采用一低通滤波器和一高通滤波器级联； 4）分别确定LPF和HPF的性能指标； 5）求出两滤波器的系统函数和频率响应，并画出其幅频特性曲线； 6）求整个滤波器的系统函数和频率响应，并画出其幅频特性曲线。(1) the design of Butterworth-type audio anti-aliasing filter 2) parameters: passband frequency of 300Hz on pass-band frequency 3400Hz under the stop-band frequency of 280Hz on stop-band frequency 3600Hz passband maximum attenuation of 0.3dB minimum stopband attenuation of 40dB 3) the use of a low-pass filter and a high-pass filter cascade 4) separately to determine the performance of LPF and HPF target 5) to derive two-filter system function and frequency response, and draw its increase frequency characteristic curve 6) for the entire filter system function and frequency response, and draw its amplitude-frequency characteristic curve.)

2009-04-08 22:56:06下载

积分：1

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nbldpc

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