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0331231
- :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 communic
OFDMSIMULATE
- OFDM仿真 参数: % 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 (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 -OFDM simulation parameters : % subcarriers median number of 128% / 2% Symbol Symbol / Carrier Tra
qpsk_ber_sevelchannel
- 这是一个仿真qpsk信号通过不同信道模型(包括单径,多径,莱斯,瑞利平坦等信道)的性能的matlab程序。-This is a simulation qpsk signals through different channel model (including single-track, multi-track, Condoleezza Rice, Rayleigh and other flat Channel) Performance of Matlab procedures.
8psk_ber_sevelchannel
- 这是一个8psk信号通过不同信道模型(包括单径,多径,莱斯,瑞利平坦等信道)的性能的matlab仿真程序。-8psk This is a signal through different channel model (including single-track, multi-track, Condoleezza Rice, Rayleigh and other flat Channel) Performance of Matlab simulation program.
Simulation-Performance-Analysis-of-OFDM-System-in-
- 构建了正交频分复用(OFDM)系统的仿真模型,给出了具体信道的参数。在不同信道传输环境下,对不同调制方式和 不同移动速度下的OFDM系统性能进行了分析比较,在仿真结果的基础上给出了OFDM系统抗多普勒频移的参考方案,采 用的信道模型基于ITU - RM. 1225 ChannelB瑞利(Rayleigh)衰落信道。最后,在基于COST 207的信道模型下,对四种典型 环境的OFDM系统进行了仿真研究,并对其结果作了讨论分析。结果表明:在多径衰落信道下,OFDM系统可以有效克服多
OFDM
- OFDM系统在AWGN和多径信道下的仿真。包括cyclic prefix,pilot,channel estimation,误比特率曲线以及实验报告(英文)-OFDM system in AWGN and multipath channel simulation. Including the cyclic prefix, pilot, channel estimation, bit error rate curve and the experimental report (English)
multipath_code
- 包含三种3GPP中典型的多径信道,对于信道仿真有很大的帮助-3GPP contains three types of typical multi-path channel, the channel simulation is very useful to
reilay-channel-for-simulation
- 对有3条固定路径的 多径信道中的 系统进行 性能仿真,并与在理想的 信道(没有多径)中同样系统的 性能进行比较。-For three fixed-path multipath channel performance simulation systems, and in an ideal channel (no multipath) in the same comparison of the performance of the system.
OFDMsimulation
- 简要而又完整的OFDM系统仿真,文件中有仿真基于模拟调制的OFDM系统,也有仿真基于FFT变换的OFDM系统,还给了完整的基于IEEE 802.11a标准的OFDM系统仿真,并且分析了单径和多径瑞利衰落信道下的误码性能-Brief but complete OFDM system simulation file OFDM system simulation based on analog modulation, OFDM system simulation based on the FFT, a
rayleigh-chan
- 程序仿真了瑞利信道,分析和大量实测表明,多径效应使接收信号包络变化接近瑞利分布。在典型移动通信中,衰落深度达30dB左右,衰落速率约30~40次/秒。-Rayleigh channel simulation procedures, analysis and extensive test shows that the received signal multipath effect changes in the envelope close to the Rayleigh distribution
OFDM_basic
- 仿真OFDM传输系统,仿真不同的保护间隔的ISI影响,信道为AWGN或多径瑞利衰落信道。-Simulation OFDM transmission system, ISI impact simulation of different guard interval, the channel is AWGN or Rayleigh fading channels.
7-MIMO-code
- MIMO仿真,验证多径信道下抗多径衰落,误比特率分析-MIMO simulation, verification resistance to multipath fading multipath channel, the bit error rate analysis