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resource-allocation
- 子载波功率资源分配，OFDM技术将信道分成许多正交子信道，在每个子信道上使用一个子载波进行调制，并且各个子载波并行传输-Power resource allocation of the sub-carriers, OFDM technology will channel into a number of orthogonal subchannels, in each subchannel to use a sub-carrier modulation, and the respective su
coif6Transform
- The demand of high data rate services has been increasing very rapidly and there is no slowdown in sight. We know that the data transmission includes both wired and wireless medium. Often, these services require very reliable data transmission
04470099.rar
- A semi blind technique for estimating the carrier frequency offset in OFDM communication systems is presented in this paper. The fractional and integer frequency offsets are esti-mated by employing a few null subcarriers in the rst OFDM sy
S-E-R
- THIS MATLAB CODE PROVIDE Comparison of the performances of the LS and the MMSE channel estimators for a 64 sub carrier OFDM system based on the parameter of Symbol Error Rate
compareGAUSSI
- 高斯信道下两径传输时单载波QPSK调制与OFDM采用QPSK调制的性能比较-Gaussian channel two-path transmission when single-carrier QPSK modulation with OFDM to QPSK modulation performance comparison
compare_twopath
- 两径传输下数字信号的单载波传输与OFDM调制后传输的性能比较（仅供参考）-Two-path transmission of digital signals single carrier transmission with OFDM modulation transfer performance comparison (for reference only)
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"
ml_tongbu
- ml时频同步算法，基于OFDM系统的。子载波数 128 位数/ 符号 2 符号数/ 载波 100 训练符号数 0 循环前缀长度 8 (1/16)*T 调制方式 4-QAM 多径信道数 3 IFFT Size 128 信道最大时延 2-ml frequency synchronization algorithm, based on the OFDM system. Digit of the number of subcarriers 128 /2
OFDM_Performance_Vs_CFO
- Carrier frequency offset in ofdm communication system in Matlab. it shows BER vs SNR.
RayleighFading
- Simulates a QPSK modulated single carrier or OFDM multicarrier scenarios going through a channel with Rayleigh fading and/or AWGN. The output is compared to the input for bit error results.
v06_03_dem_2up_arrange
- 一个OFDM符号128个有效符号，插入128个虚拟子载波 符号率（即有效数据率）fsymbol，而发送速率（需要包括虚拟子载波）2fsymbol 输入的数据需要2倍的发送数据率，以便进行内插，实现位定时跟踪，即4倍fsymbol采样率的调制信号 OFDM symbol Nfft=128 points 一个OFDM符号数据点 Nfft*2 = 256 ， Guard Interval点 ＝Ng*2=64 -128 of an OFDM symbol of a val
ofdm_4qam
- ofdm程序4QAM调制。 子载波数 128 位数/ 符号 2 符号数/ 载波 1000 训练符号数 0 循环前缀长度 8 调制方式 4-QAM 多径信道数 3 IFFT Size 128 信道最大时延 2-ofdm program 4QAM modulation. Subcarriers median number of 128 /2 Symbol Symbol/carrier cyclic prefix length of the
matlab32ls
- Comparison of the performances of the LS and the MMSE channel estimators for a 32 sub carrier OFDM system based on the parameter of Mean square error- Comparison of the performances of the LS and the MMSE channel estimators for
matlab32mmse
- Comparison of the performances of the LS and the MMSE channel estimators for a 32 sub carrier OFDM system based on the parameter of Mean square erro-Comparison of the performances of the LS and the MMSE channel estimators for a
matlab64ls
- Comparison of the performances of the LS and the MMSE channel estimators for a 64 sub carrier OFDM system based on the parameter of Mean square erro-Comparison of the performances of the LS and the MMSE channel estimators for a
matlab64mmse
- Comparison of the performances of the LS and the MMSE channel estimators for a 64 sub carrier OFDM system based on the parameter of Mean square erro-Comparison of the performances of the LS and the MMSE channel estimators for a
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
LTE_FFT_TEST
- OFDM样值定时偏差和载波频率偏移情况下的matlab仿真-OFDM sample timing offset and carrier frequency offset matlab simulation case
1111cnc03_2
- Multicarrier modulations attract a lot of attention ranging from wireline to wireless communications compared to single carrier modulation because of theirs capability to efficiently cope with frequency selective fading channels. Much of attentio
16QAMpics
- OFDM系统中16QAM调制下在载波不同时得到的误码率曲线图-Modulation 16QAM OFDM system carrier is not at the same time to get under the BER curves