Description: 在瑞利衰落下对OFDM系统进行的仿真，用MATLAB实现。-in Rayleigh fading under the OFDM system simulation using MATLAB. Platform: |
Size: 6003 |
Author:罗旋 |
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Description: 瑞利衰落信道的Matlab仿真模型程序，这个是关于OFDM 的循环卷积源代码-Rayleigh fading channel simulation model of the process, this is the cycle of OFDM convolution source code Platform: |
Size: 5187 |
Author:周洁 |
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Description: ：正交频分复用(OFDM)是第四代移动通信的核心技术。该文首先简要介绍了OFDM基本原理，重点研究了理想同步情
况下，保护时隙(cP)和不同的信道估计方法在高斯信道和多径瑞利衰落信道下对OFDM系统性能的影响。在给出OFDM系
统模型的基础上，用MATLAB语言实现了整个系统的计算机仿真并给出参考设计程序-: orthogonal frequency division multiplexing (OFDM) is the fourth-generation mobile communication core technology. The article briefly introduces the basic principles of OFDM, focus on the ideal synchronous circumstances, Protection slot (counted ac cording) and different channel estimation method in Gaussian channel and multi-path Rayleigh fading channels of OFDM system performance. OFDM system is the model on the basis of MATLAB language of the entire system is computer simulation and reference design process Platform: |
Size: 4714 |
Author:xoaxiao |
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Description: 在高斯与一径瑞利衰落信道下对OFDM系统（QPSK调制）的功率普的仿真-in Gaussian with a Rayleigh fading channel right OFDM system (QPSK) Pu Power Simulation Platform: |
Size: 2799 |
Author:陈栩秋 |
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Description: CP-OFDM仿真，详细，有资料，有程序。-Matlab file for simulating a cyclic-prefix (CP) orthogonal-frequency-
division-multiplexing (OFDM) system with binary phase-shift keying (BPSK)
modulation on each subcarrier. CP-OFDM system includes a repetition code
and interleaving across subcarriers as well as a Rayleigh-fading channel
model with exponentially decaying power profile. Platform: |
Size: 103424 |
Author:武拥军 |
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Description: A Hybrid Orthogonal Frequency Division Multiplexing Interleave-Division Multiple-Access (OFDM-IDMA).
This is a simulation program for uncoded OFDM-IDMA system with QPSK modulation
and Complex channel modelled by Rayleigh fading. The program is modified based on Interleave-Division Multiple-Access (IDMA)-A Hybrid Orthogonal Frequency Division Multiplexing Interleave-Division Multiple-Access (OFDM-IDMA).
This is a simulation program for uncoded OFDM-IDMA system with QPSK modulation
and Complex channel modelled by Rayleigh fading. The program is modified based on Interleave-Division Multiple-Access (IDMA) Platform: |
Size: 56320 |
Author:widad |
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Description: 该程序为在瑞利衰落信道下，OFDM系统采用FFT和IFFT实现多载波调制。-The program is in the Rayleigh fading channel, the OFDM system uses FFT and IFFT to achieve multi-carrier modulation. Platform: |
Size: 5120 |
Author:秦定本 |
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Description: 瑞利衰落信道的分布，描述了信号在进入信道前后的变化(Rayleigh fading channel distribution, describes the signal before and after entering the channel changes) Platform: |
Size: 16384 |
Author:泡芙的味道
|
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Description: 在OFDM系统中的瑞利衰落信道分布，描述了信号进入信道前后的变化，误码率对比(The Rayleigh fading channel distribution in the OFDM system describes the change of the signal before and after the channel, the bit error rate comparison) Platform: |
Size: 225280 |
Author:泡芙的味道
|
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Description: 在OFDM系统中的瑞利衰落信道分布，描述了信号进入信道前后的变化(The Rayleigh fading channel distribution in the OFDM system describes the change of the signal before and after the channel, the bit error rate comparison) Platform: |
Size: 4096 |
Author:泡芙的味道
|
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Description: 在OFDM系统中的瑞利衰落信道分布，描述了信号进入信道前后的变化，误码率对比(The Rayleigh fading channel distribution in the OFDM system describes the change of the signal before and after the channel, the bit error rate comparison) Platform: |
Size: 2048 |
Author:泡芙的味道
|
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Description: 本程序对多径衰落的瑞利信道进行了信道估计，并比较了LS算法，LMMSE算法的误码率(This program estimates the channel of Rayleigh channel with multipath fading, and compares the BER of LS algorithm and LMMSE algorithm.) Platform: |
Size: 4096 |
Author:最强青铜 |
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Description: 程序实现的主要功能：
OFDM调制识别：研究了基于高阶累量和基于小波变换的OFDM信号和单载波调制信号的识别算法，仿真分析了两种算法在高斯信道和多径瑞利衰落信道下的信号识别性能。
OFDM参数估计：研究了基于Welch算法和AR模型法求解功率谱进而估计信号带宽的算法，对两种算法的估计性能进行了比较；根据OFDM信号的循环平稳性研究了基于循环谱的载频估计算法；根据 OFDM信号的自相关性研究了基于可变延时自相关和固定延时自相关的FFT相结合的算法，估计了OFDM信号的有效数据长度、符号总长度、循环前缀长度和子载波间隔；最后研究了基于带宽和基于过采样估计子载波数目两种算法，并在高斯信道和多径瑞利衰落信道下对以上参数估计算法进行了仿真分析。
其中OFDM_DEMO为整个项目的程序入口，其余均为辅助函数，每一个函数均有参数注释和功能说明。(The main functions of the program are as follows:
OFDM modulation recognition: the recognition algorithms of OFDM signal and single carrier modulation signal based on high-order cumulant and wavelet transform are studied. The signal recognition performance of the two algorithms in Gaussian channel and multi-path Rayleigh fading channel is simulated and analyzed.) Platform: |
Size: 37888 |
Author:奥奥奥奥利奥 |
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Description: One of the major challenges which prevents the coordinated multipoint (CoMP) communications concept from being widely deployed in new cellular systems is timing synchronization. In order to achieve the gains promised by CoMP systems, the user equipments’ (UEs) signals in uplink (UL) or the base stations’ (BSs) signals in downlink (DL) should be synchronized such that the time difference of arrivals (TDOAs) do not exceed the cyclic prefix (CP) length of the transmitted signals; Otherwise the system suffers from unavoidable integer time offsets. These offsets lead to asynchronous interference in terms of inter-carrier, inter-block and inter-symbol interference (ISI). This limits the percentage of area within a cell which can be covered by cooperation and imposes an upper bound on this area. In this paper, we investigate this problem in the UL and by using geometrical and semi-analytical approaches, we define this upper bound. Also, by characterizing an accurate mathematical model for the asynchronous interference in Rayleigh fading channels, we were be able to employ a standard MMSE-based receiver that mitigates this interference. Furthermore, a typical joint channel and delay estimation block is incorporated into the receiver to examine its performance with estimation errors. Platform: |
Size: 1869319 |
Author:ahamza |
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Search - Rayleigh fading ofdm