Description: 这部分代码实现了用ofdm的方法对于发送端进行调制的过程，其中包括了对于结果时域和频域的分析以及升采样后的波形。其中所用的载波数是12个。-This part of the code to achieve the OFDM method of transmitting side for modulating the process, including the analysis of the results of the time domain and frequency domain, as well as the waveform after upsampling. The number of carriers which is 12. Platform: |
Size: 1024 |
Author:赵希萌 |
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Description: 实现OFDM的发送、信道估计、接收、误码识别等功能。有OFDM时域、频域波形图仿真功能。-The transmission of OFDM channel estimation, the receiver, error recognition and other functions. OFDM time domain, frequency domain waveform simulation capabilities. Platform: |
Size: 3072 |
Author:ly |
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Description: 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" approach reduces a PAPR FIR half-band filter, the final output signal of the time domain/frequency domain response. Contains all levels of the video domain comparison Platform: |
Size: 2048 |
Author: |
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Description: In this paper, the impact of clipping noise on optical
wireless communication (OWC) systems employing orthogonal
frequency division multiplexing (OFDM) is investigated. The
two existing optical OFDM (O-OFDM) transmission schemes,
asymmetrically clipped optical OFDM (ACO-OFDM) and directcurrent-
biased optical OFDM (DCO-OFDM), are studied. Time
domain signal clipping generally results from direct current
(DC) biasing and/or from physical limitations of the transmitter
front-end. Platform: |
Size: 823296 |
Author:ibbu |
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Description: A historical perspective of orthogonal frequency-division multiplexing
(OFDM) is given with reference to its literature. Its advantages
and disadvantages are reviewed, and its performance is
characterized over highly dispersive channels. The effects of both
time- and frequency-domain synchronization errors are quantified,
and a range of solutions proposed in the recent literature are reviewed.
One of the main objectives of this review is to highlight the
recent thinking behind adaptive bit allocation and turbo coding in
the context of OFDM. This paper concludes with a wide-ranging
throughput comparison of the schemes discussed herein under the
unified constraint of a fixed target bit error rate of 10 4. Platform: |
Size: 435200 |
Author:redami |
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Description: ofdm系统仿真实现 OFDM符号的时域波形 频域波形 仿真图形-ofdm system simulation OFDM symbol in the time domain waveforms in the frequency domain waveform simulation graphics Platform: |
Size: 3072 |
Author:周全 |
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Description: We first show that part of the IFFT in the transmitter in an OFDM system can be shifted to the receiver, while a conventional one-tap frequency-domain equalizer is still applicable. Platform: |
Size: 599040 |
Author:avv |
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Description: 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 synchronization is accomplished by using the symmetric conjugate of the training symbol in time domain and the frequency synchronization is finished by utilizing the good
autocorrelation of the training symbol in frequency domain.
The simulation results show that compared with conventional schemes, the proposed scheme gives a more accurate estimate of symbol timing and carrier frequency offset and provides a
wider acquisition range for the carrier frequency offset.1 Platform: |
Size: 321536 |
Author:Mohamed |
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Description: 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 at various stages of time domain and frequency domain graph, and before and after the launch of the constellation diagram. Platform: |
Size: 5120 |
Author:刘晨 |
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Description: 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 Platform: |
Size: 1024 |
Author:symbol |
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Description: 基于IEEE802.11n MIMO-OFDM的时域同步和频域同步，经典算法和改进算法的对比，并且中英文均包含-Time domain based on IEEE802.11 n MIMO- OFDM synchronization and frequency synchronization, classic algorithms and the comparison of improved algorithm, and are included in both English and Chinese Platform: |
Size: 398336 |
Author:李玉 |
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Description: frequency division multiplexing (OFDM) is used extensively in broadband wired and wireless communication systems because it is an effective solution to intersymbol interference (ISI) caused by a dispersive channel. This becomes increasingly important as data rates increase to the point where, when conventional serial modulation schemes like quadrature amplitude modulation (QAM) or NRZ are used, the received signal at any time depends on multiple transmitted symbols. In this case the complexity of equalization in serial schemes which use time domain equalization rises rapidly. In contrast, the complexity of OFDM, and of systems using serial modulation and frequency domain equalization, scale well as data rates and dispersion increase. [1]–[3]. A second major advantage of OFDM is that it transfers the complexity of transmitters and receivers the analog to the digital domain-frequency division multiplexing (OFDM) is used extensively in broadband wired and wireless communication systems because it is an effective solution to intersymbol interference (ISI) caused by a dispersive channel. This becomes increasingly important as data rates increase to the point where, when conventional serial modulation schemes like quadrature amplitude modulation (QAM) or NRZ are used, the received signal at any time depends on multiple transmitted symbols. In this case the complexity of equalization in serial schemes which use time domain equalization rises rapidly. In contrast, the complexity of OFDM, and of systems using serial modulation and frequency domain equalization, scale well as data rates and dispersion increase. [1]–[3]. A second major advantage of OFDM is that it transfers the complexity of transmitters and receivers the analog to the digital domain Platform: |
Size: 415744 |
Author:kartick |
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Description: 在OFDM系统中，利用在两个连续的OFDM符号中导频信号之间的相位差，进行基于导频的频域CFO估计技术。-In OFDM systems, the use of two consecutive OFDM symbols pilot phase difference between the signals, frequency domain based pilot CFO estimation techniques. Platform: |
Size: 1024 |
Author:耿晓文 |
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Description: 粒子图像分割及匹配均为自行编制的子例程，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,主要是基于mtlab的程序，搭建OFDM通信系统的框架，包含优化类的几个简单示例程序。- Particle image segmentation and matching subroutines themselves are prepared, LFM pulse compression of the Matlab program, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Mainly based on the mtlab procedures, Build a framework OFDM communication system, Optimization class contains several simple sample programs. Platform: |
Size: 6144 |
Author:pykdbf |
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Description: 分析了该信号的时域、频域、倒谱，循环谱等,多抽样率信号处理，脉冲响应的相关分析算法并检验，双向PCS控制仿真，MIMO OFDM matlab仿真,车牌识别定位程序的部分功能，基于matlab GUI界面设计。-Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Multirate signal processing, Related impulse response analysis algorithm and inspection, Two-way PCS control simulation, MIMO OFDM matlab simulation, Part of the license plate recognition locator feature, Based on matlab GUI interface design. Platform: |
Size: 6144 |
Author:hzfgigc |
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