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stbc_ofdm(time)
- 从时域分析比较了ofdm和stbc与ofdm结合的性能差别-from time-domain analysis and comparison of OFDM stbc OFDM combined with the performance difference
wlan_transmitter
- WLAN仿真-发送机 wlan No Comments 设置完系统参数后,开始产生发送数据。 1. 产生随机的发送bit(tx_bits),这里不考虑信道编码。 2. QAM映射 3. 将数据映射到不同载波,形成OFDM符号 4. 产生pilot,并将pilot插入OFDM符号中 5. 加入dc和guard子载波 6. 进行ifft,将频域信号变到时域,并加入循环前缀 7. 对信号进行overlap window 8. 在时域产生short preamb
ofdm
- 我自己写的OFDM的一些仿真程序,时域图、频域图以及一些错误图样等。-I wrote it myself a number of OFDM simulation program, time-domain diagrams, frequency-domain maps and drawings and so some errors.
timing_OFDM
- OFDM时域定时测试,分别在高斯白噪声信道和瑞利信道中-OFDM time-domain time test, respectively white Gaussian noise channel and Rayleigh channel
attachments_2011_01_20
- OFDM modulation produces higher Peak Average Power Ratio (PAPR) whenever the carriers in OFDM symbol add synchronously in the time domain resulting in higher signal power. This high power saturates the power amplifier placed in the RF section res
MOFDMa
- Matlab入门级OFDM仿真,包括每个步骤的波形,星座图图,频谱等含循环前后缀,时域加窗等,适合刚接触OFDM的学习 -Matlab entry-level OFDM simulation, including each step of the waveform, constellation Figure, spectrum containing cycle before the suffix, time-domain windowing suitable new to OFDM lear
baseband-signal_ofdm
- 一个OFDM 基带信号,采用256点IFFT,子载波采用8PSK映射,加保护段,调制信号采用“削顶”方法降低PAPR,FIR 半带滤波,最后输出时域信号/频域响应。包含各级的视频域比较-An OFDM baseband signal, using the 256-point IFFT, the sub-carrier using 8PSK mapping, plus the protection section, the modulated signal " cut top"
OFDMAsingalTimedomain
- OFDM A signal in Time domain
homework2
- 通信系统与仿真作业: 1)设计π/4-DPSK或16-QAM调制器仿真程序, 画出时域波形、 正交分量、同相分量波形,眼图,散点图等。 2)利用MATLAB进行DPSK在高斯信道下的BER性能仿真,并将结果与PSK性能进行比较。 3)已知 OFDM的数据传输速率为19.2Kbps, OFDM 符号长度为320,保护间隔为32点,子载波数为128,IFFT/FFT点数为256,载波频率320KHz,调制方案采用QPSK,仿真其在高斯信道下的BER性能。 -Communication
pts_paprofdm
- pARTIAL TRANSMIT SEQUENCE is very effective technique for papr reduction in OFDM.It divide OFDM sequence into several disjoint sub sequences and convert to time domain then Combine with complex phase factors to reduce PAPR.In this code matlab simul
QPSKOFDM
- 加窗QPSK-OFDM调制解调,每个OFDM符号采用QPSK调制方式,并画出了时域对比图-Windowed QPSK-OFDM modulation and demodulation, each OFDM symbol using QPSK modulation and a time-domain comparison chart shown
OFDM_matlab
- 该程序基本涵盖了OFDM-16QAM系统传输的全过程,除了调制解调外,有添加循环前缀,加窗的过程。生成图像有各个阶段的时域、频域图,以及发射前后的星座图。-This basically covers the whole process of OFDM transmission- 16 qam system, in addition to the modem, have add cyclic prefix, plus the window procedure. Generate the image
CFO_estimation_v1.0
- OFDM系统中通过时域(CP)以及频域(Moose/Classen算法)进行CFO估计算法-Time-domain CP based method and Frequency-domain (Moose/Classen) methods in OFDM system
paoleng
- 线性调频脉冲压缩的Matlab程序,分析了该信号的时域、频域、倒谱,循环谱等,ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块。- LFM pulse compression of the Matlab program, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. ofdm system simulation including 16qam modulat
hanpui_v31
- ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块,FIR 底通和带通滤波器和IIR 底通和带通滤波器,分析了该信号的时域、频域、倒谱,循环谱等。- ofdm system simulation including 16qam modulation fft windowing modules plus cp, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Analysis
qeipiu
- 包括回归分析和概率统计,分析了该信号的时域、频域、倒谱,循环谱等,MIMO OFDM matlab仿真。- Including regression analysis and probability and statistics, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. MIMO OFDM matlab simulation.
DAIMA
- OFDM系统通过在时域符号前插入大于信道冲击响应长度的循环前缀(CP)可以避免符号间干扰(ISI)和载波间干扰(ICI)。但是,过长CP会使得数据传输效率降低。可以采用最小均方误差(MMSE)信道缩短均衡技术来压缩信道冲击响应长度。-OFDM systems avoid inter-symbol interference (ISI) and inter-carrier interference (ICI) by inserting a cyclic prefix (CP) larger than
bit
- 基于matlab实现OFDM系统 包括信号时域频域仿真 误码率分析-Based on matlab realize simulation of OFDM system, including signal time domain and frequency domain analysis of bit error rate
bid
- 基于matlab实现OFDM系统 包括信号时域频域仿真 误码率分析-Based on matlab realize simulation of OFDM system, including signal time domain and frequency domain analysis of bit error rate
PST部分传输序列法
- PTS的基本思想是:将输入的OFDM符号X,分割成V个互不重叠的独立的子序列Xv,每个子块向量大小相等且子块中没有继承原符号相应位置的取值为0。经过N点快速傅里叶逆变换后获得时域信号xv,再与相位旋转因子系数bv相乘,最后将每个子块的结果求和。然后将使PAPR最小的旋转因子的最佳组合作为边带信息传送给接收机以恢复信号。 在PTS方法中,可以通过改变子序列的分割方式降低系统计算复杂度和改善系统性能。有三种常用的分割方法:相邻分割、伪随机分割和交织分割。(The basic idea