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Dec_mul
- 时间同步后即可确定每帧数据的起始位置，这样就能完整的截取下每一帧。但是，数据中还带有频偏信息。在常规的通信系统中，多普勒很小仅仅会带来很小的频偏，但是在大多普勒的情况下，频偏将非常大，20马赫的速度将会带来将近34K的频偏。因此，如何很好的纠正频偏即为本系统的难点。 OFDM中，我们将大于子载波间隔倍数的频偏称为整数倍频偏，而将小于一个子载波间隔的频偏称为小数倍频偏。频偏矫正精度只要能保证小于十分之一倍的子载波间隔，频偏就不会对均衡和解调造成影响。本文中我们借鉴这种思想，由于硬件资源限制，我
1001-0548(2013)03-0355-05
- 认知无线电系统中存在载波频偏的OFDM频谱感知技术1001-0548(2013)03-0355-05-OFDM Signal Sensing Scheme for Cognitive Radio in the Presence of Carrier Frequency Offset.
chapter9
- 频偏为0.2Hz时的子载波解调结果以及OFDM的模拟调制实现与IDFT实现-An offset of the analog modulation sub-carrier demodulation 0.2Hz OFDM time to achieve results, and to achieve the IDFT
OFDMmodulation
- OFDM仿真，从载波、调制波生成（可以使用spectrum生成更具随机性的复杂波形）至循环变换编码，最后绘出波形图-OFDM simulation, from the carrier wave generating cycle to transform coding of the last draw waveforms
Test_8PSK
- 本代码在OFDM系统中，用matlab实现8-PSK的调制、载波同步及其误码率计算-This code completes The modulation，carrier synchronization and the bit error rate test of 8-psk in an OFDM system .
test_BER_PLL2_64QAM
- 在OFDM系统的大环境下，本代码实现了64QAM的调制，载波同步及其误码率计算。-this code realizes the modulation, the carrier synchronization and the bit error rate test
ofdm_ML
- 利用ML算法进行载波频偏的估计，并完成整个ofdm系统的简单仿真-Carrier frequency offset estimation using ML algorithm, a simple simulation and complete the whole OFDM system
SER_compare
- 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-Channel equalization error rate
PSKmodulation
- 提出一种全新的子载波调制方式盲识别算法,该算法利用ＯＦＤＭ子载波组的统计特性,然后通过推导得到新的基于混合高阶矩的特征量,使得到新的特征量不受信噪比、载波频偏与相位偏移的影响。 -Proposed a new sub-carrier modulation count Blind Identification Method, the method using the statistical characteristics of the OFDM sub-carrier group, an
ofdm1
- Matlab搭建简易OFDM系统，128子载波，BPSK调制-Simple structures Matlab OFDM systems, sub-carrier 128, BPSK modulation
OFDM_LS_CS_randn
- 应用于低压电力线载波通信的OFDM系统仿真，采用了压缩感知的方法进行信道估计，与LS算法比较，仿真效果良好。-Used in low-voltage power line carrier communication OFDM system simulation, using the compressed sensing method for channel estimation, simulation good effect.
CS_different_polit
- 低压电力线载波通信的OFDM系统仿真，采用了压缩感知的方法进行信道估计，分别选取不同导频数目与LS算法比较，仿真效果良好。-OFDM power line carrier communication system simulation, using the compressed sensing method for channel estimation, respectively, to select a different number of pilot and LS algorithm, t
different_polit_fenbu
- 应用于低压电力线载波通信的OFDM系统仿真，采用了压缩感知的方法进行信道估计，采用不同的导频分布方式，仿真效果良好。-Used in low-voltage power line carrier communication OFDM system simulation, using the compressed sensing method for channel estimation, using different distribution methods pilot simulation
OFDM_LSCS_256_64_16
- 应用于低压电力线载波通信的OFDM系统仿真，采用了压缩感知的方法进行信道估计，采用了不同的导频数目，可以讨论系统效率的提升，仿真效果良好。-Used in low-voltage power line carrier communication OFDM system simulation, using the compressed sensing method for channel estimation, using a number of different frequency condu
ofdm104
- ofdm同步算法,用于多载波ofdm通信中提取相应的同步信息，便于以后的均衡处理。-ofdm synchronization algorithm for multi-carrier communication ofdm synchronization information extracted corresponding to facilitate subsequent equalization.
cofdm
- Orthogonal frequency division multiplexing (OFDM) is a communications technique that divides a communications channel into a number of equally spaced frequency bands. A subcarrier carrying a portion of the user information is transmitted in each band
chapter9
- 频偏为0.2Hz时的子载波解调结果以及OFDM的模拟调制实现与IDFT实现-An offset of the analog modulation sub-carrier demodulation 0.2Hz OFDM time to achieve results, and to achieve the IDFT
97325516
- A Novel Time and Frequency Synchronization Scheme for OFDM Systems A new training symbol is designed and a novel time and frequency synchronization scheme for orthogonal frequency division multiplexing systems is proposed. The time synchroniza
12.ISCA-RJRS-2013-290
- Application of spread spectrum for satellite land mobile systems is difficult in satellite link because of synchronization and providing code or considerable Doppler shift. This is particularly high for LEO satellites. So that, a Doppler shift carr
crmapping-and-crdemapping
- 用Matlab仿真OFDM系统时所需的载波映射及逆映射程序-Matlab simulation with the desired carrier OFDM system mapping and inverse mapping program