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OFDM
- OFDM和多址技术的结合能够允许多个用户同时共享有限的无线频谱，从而获得较高的系统容量。-OFDM and multiple access technologies combined to allow multiple users to simultaneously share the limited wireless spectrum, and thus obtain a higher system capacity.
ofdm
- 正交频分复用（OFDM，Orthogonal Frequency Division Multiplexing）是一种多载波数字调制技术，也可以被当作一种复用技术。具有频谱利用率高、抗多径干扰等特点，OFDM系统能够有效地抵抗无线信道带来的影响，例如信道的频率选择性衰落，脉冲噪声和共信道干扰的影响。本文主要介绍了OFDM原理的相关知识。-The Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Divisi
ofdm_signal_spec
- OFDM signal spectrum
3
- Spectrum Sensing in Cognitive Radio-Optimal Multiband Joint Detection for Spectrum Sensing in Cognitive Radio Networks
ofdmspectrum
- plot OFDM spectrum, signal modulation and signal demodulation.
OFDM_cognitive
- 博士学位论文，详细探讨基于OFDM的认知无线电系统信道及频谱感知-Channel, spectrum, and waveform awareness in OFDM-based cognitive radio systems.pdf
RTL8191SU
- For legacy compatibility, Direct Sequence Spread Spectrum (DSSS), Complementary Code Keying (CCK) and OFDM baseband processing are included to support all IEEE 802.-RTL8191SU RTL8191SU RTL8191SU
Spectrum-Systems
- Mutual Interference in OFDM-based Spectrum Pooling Systems
OFDM
- 针对在无线电监测和认知无线电系统中,信号参数估计这一重要问题,证明了OFDM信号具有循环平稳性的必要条件是加循环前缀或有非矩形脉冲成型,并以线性周期时变变换(LPTV)模型为基础,推导了OFDM信号的循环谱表达式-For radio monitoring and cognitive radio systems, signal parameter estimation of this important issue, the necessary condition for the OFDM sig
OFDM-signals-with-low-SNR
- 针对认知无线电系统中正交频分复用( OFDM )信号参数估计这一重要问题, 利用OFDM 信号的循环谱实现了符号周期的盲估计。-For cognitive radio systems, orthogonal frequency division multiplexing (OFDM) signal parameter estimation of this important issue, the cyclic spectrum of the OFDM signal to achieve the
The-Introduction-Of-OFDM-Spectrum
- 本文介绍了OFDM技术及其功率谱的，并通过仿真研究了OFDM的功率谱密度特点。在同样条件下，增大子载波数目，会使信号带宽增加，带外衰减加快，功率谱密度图形更加接近于矩形。另外，添加循环前缀将使离散峰值谱线的值略微增大。-This article describes the OFDM technology and its power spectrum, and to study the characteristics of the power spectral density of the OFD
spectrum-sensing
- I WANT MATLAB CODE FOR SPECTRUM SENSING IN WIDEBAND ofdm COGNITIVE RADIO
Spectral-Efficiency-Analysis-in-OFDM-and-OFDM_OQA
- Spectral Efficiency Analysis in OFDM and OFDM/OQAM based Cognitive Radio Networks The future wireless communication is expected to be able to improve the efficiency of spectrum usage. To solve the challenge of spectrum shortage, an innovativ
spectrum-density-of-NC-OFDM
- 该程序用于基于认知无线电NC-OFDM系统的仿真，用来计算信号的功率谱密度-The program for the NC-OFDM Cognitive Radio system simulation for calculating the power spectral density of the signal。
BER-ANALYSIS-IN-OFDM
- Multi-Carrier Modulation is a technique for data-transmission where a high-bit rate data stream is divided into several parallel low bit-rate data streams and using these low bit-rate data streams to modulate several carriers. Multi-Carrier Transmiss
OFDM
- 本文件描述了OFDM的频谱示意图，并给出了单载波和多载波情况下的频谱比较，以及源码-OFDM spectrum schematic
OFDM-blind-estimating
- 本文有关于OFDM循环谱的推导 可贵的是还有带循环前缀的循环谱推导 仿真了OFDM循环谱，介绍了相关理论估计盲信号参数以及改进算法-The OFDM cyclic spectrum and bilnd signal estimating
introduction-to-OFDM-2
- 4HE BASIC IDEA OF /&$- IS TO DIVIDE THE AVAILABLE SPECTRUM INTO SEVERAL SUBCHANNELS ?SUBCARRI? ERS?? Y MAKING ALL SUBCHANNELS NARROWBAND? THEY EXPERIENCE ALMOST ?AT FADING? WHICH MAKES EQUALIZATION VERY SIMPLE? 4O OBTAIN A HIGH SPECTRAL EbCIENCY
OFDM-1
- To fully exploit wireless radio resource and, thus, increase spectrum efficiency, cognitive radios shall sense wire- less environments and identify interference to allow opportunis- tic transmissions for secondary systems. Based on Chen et al.
ofdm-simulink
- 在现代无线通信技术中，扩频通信是一种具有较强抗干扰性能的技术，正交频分复用(OFDM)是一种具有较高数据传输速率和频谱利用率，并能有效对抗频率选择性衰落的多载波调制技术，因而将这二者结合起来构建系统势必会进一步提高系统的抗干扰和抗衰落性能，研究其结合技术也逐渐成为无线通信领域的热点。随着3G的兴起，即将推出的LTE也将采用OFDM技术（正交频分多路复用）。 由于OFDM的多载波特性，使得直接序列扩频技术和跳频技术能够与OFDM技术进行有效的结合。在本文中,我们研究了OFDM）以及相关抗干扰抗