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利用伪随机序列作为发送信号 dppl
说明： 利用伪随机序列作为发送信号，经过信道，产生了频偏和相位偏移，利用数字锁相环的原理实现对信号的频率估计和相位估计，实现信号的载波同步。(The frequency offset and phase offset are generated by using pseudo-random sequence as the transmitting signal through the channel. The frequency estimation and phase estimation of the signal are realized by using the principle of digital phase-locked loop, and the carrier synchronization of the signal is realized.)
- 2018-12-27 10:59:33下载
- 积分：1
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ECC-files
A comrehensive collection of software routines
for forward error correction.
Copyright 2004 by Todd K. Moon Permission is granted to use this program/data
for educational/research only
- 2011-11-22 03:16:10下载
- 积分：1
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to2to
二进制格雷码与自然二进制码的互换
它就是介绍怎么把二进制格雷码与自然二进制码的互换。主要是异或操作(itis to for 2to 2)
- 2011-10-21 18:42:17下载
- 积分：1
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ofdm_EM_channel
说明： OFDM信道估计的主要程序，算法研究等。(OFDM channel estimation algorithm for the main program, etc.)
- 2011-04-10 11:18:53下载
- 积分：1
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PCM
在实际的调谐解调电路中，采用的是非相干载波解调，本振信号与发射端的载波信号存在频率偏差和相位抖动，因而解调出来的模拟I、Q基带信号是带有载波误差的信号。这样的模拟基带信号即使采用定时准确的时钟进行取样判决，得到的数字信号也不是原来发射端的调制信号，误差的积累将导致抽样判决后的误码率增大，因此数字QPSK解调电路要对载波误差进行补偿，减少非相干载波解调带来的影响。(In the actual tuning and demodulating circuit, non-coherent carrier demodulation is adopted, and the frequency deviation and phase jitter of the local oscillator signal and the carrier signal of the transmitting end are present, and thus the demodulated analog I and Q baseband signals are signals with carrier error.)
- 2019-01-30 20:16:08下载
- 积分：1
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MIMO_QAM_MATLAB
2x2，4x4MIMO的误码率性能仿真，比较了ML,ZF,MMSE,ZF-SIC,MMSE-SIC在4QAM和16QAM下的性能曲线(The BER performance of 2x2 and 4x4MIMO is simulated, and the performance curves of ML, ZF, MMSE, ZF-SIC, and MMSE-SIC under 4QAM and 16QAM are compared)
- 2021-04-18 13:28:57下载
- 积分：1
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OFDM_angle
基于OFDM的单脉冲雷达回波信号极化散射矩阵提取的仿真程序，可以根据角误差提取任意角度的目标PSM。(Extracted emulation program based on OFDM single-pulse radar echo signal polarization scattering matrix can be extracted according to the angle error at any angle of the goal of the PSM.)
- 2012-04-26 15:47:35下载
- 积分：1
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wdd_argsStandardScheme
AdditionService add_args add_argsStandardScheme
- 2017-04-29 22:14:45下载
- 积分：1
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卷积码的编码和VB译码
在MATLAB上设计一个（2，1，3）卷积编码器和对应的采用维特比译码算法的译码器。编码器的生成多项式为：[1 0 1；1 1 1]。将编码器的输出经过一个高斯白噪声信道的结果作为译码器的输入，观察比较译码器输出和编码器输入，了解卷积码的容错性，并计算译码结果的误比特率.(A convolutional coder (2, 1, 3) and corresponding decoder using Vitby decoding algorithm are designed on MATLAB. The generating polynomial of encoder is: [1 01; 11 1]. The output of the encoder through a Gauss white noise channel as a result of the decoder input, compare the output of the decoder and encoder input, understand the fault tolerance of convolutional code, and calculate the decoding results of bit error rate.)
- 2017-11-08 09:58:55下载
- 积分：1
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NOMA concept
说明： power allocation in NOMA
- 2021-04-17 13:58:52下载
- 积分：1
