Description: 该程序是用matlab语言实现的关于瑞利信道多径传输的多谱勒效应的描述-that the procedure was used Matlab language on the Rayleigh Channel multipath transmission of the description of Doppler effect Platform: |
Size: 3112 |
Author:火箭 |
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Description: 该程序是用matlab语言实现的关于瑞利信道多径传输的多谱勒效应的描述-that the procedure was used Matlab language on the Rayleigh Channel multipath transmission of the description of Doppler effect Platform: |
Size: 3072 |
Author:火箭 |
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Description: Simulator for a GSM traffic channel transmission and reception
This Simulink model simulates the entire transmission and reception of voice data of a traffic channel for GSM (TCH/FS)over a multipath fading channel, and it calculates the BER of the received signal-Simulator for a GSM traffic channel transm ission and reception This Simulink model simul ates the entire transmission and reception of v oice data of a traffic channel for GSM (TCH/FS) o ver a multipath fading channel, and it calculates the BER of the received signal Platform: |
Size: 14336 |
Author:李艳芬 |
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Description: matlab实现的多个基础程序和报告并有流程图（1） 绘出正弦信号波形及频谱。
（2） 单极性归零（RZ）波形及其功率谱，占空比为50％。
（3） 升余弦滚降波形的眼图及其功率谱。滚降系数为0.5。发送码元取值为0、2。
（4） 最佳基带系统的Pe~Eb\No曲线，升余弦滚降系数a=0.5，取样值的偏差是Ts/4。
（5） Pe~Eb\No，升余弦滚降系数a=0.5，取样时间无偏差，但信道是多径信道，C(f)=abs(1-0.5*exp(-j*2*pi*f*dt))，dt=Ts/2。
（6） 仿真数字基带传输系统，包括输入、输出信号波形及其功率谱，眼图（升余弦滚降系数a=0.5），Pe~Eb\No曲线，取样时间无偏差。
-matlab realize a number of the basis of procedures and reports and have flow chart (1) mapped sinusoidal signal waveform and spectrum. (2) unipolar return-to-zero (RZ) waveform and its power spectrum, 50 duty cycle. (3) Raised Cosine rolloff waveform eye diagram and power spectrum. Roll-off factor of 0.5. Send code values for the 0,2 million. (4) the best base-band system Pe ~ EbNo curve, raised cosine roll-off factor a = 0.5, sampling bias is the value of Ts/4. (5) Pe ~ EbNo, raised cosine roll-off factor a = 0.5, sampling time deviation, but the channel is a multipath channel, C (f) = abs (1-0.5* exp (-j* 2* pi* f* dt)), dt = Ts/2. (6) Simulation of digital baseband transmission system, including input and output signal waveforms and power spectrum, eye diagram (raised cosine roll-off factor a = 0.5), Pe ~ EbNo curve, sampling time deviations. Platform: |
Size: 311296 |
Author:dongming |
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Description: OFDM信号在多径传输的信道环境下的系统仿真，希望大家有收获。-OFDM signal in multipath channel transmission system simulation environment, I hope everyone has harvested. Platform: |
Size: 15360 |
Author:daxin.lv |
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Description: OnPerformanceLimitsofDFTSpreadOFDMSystems
DFT Spread OFDM has been proposed recently to
reduce the Peak to Average Power Ratio (PAPR) of conventional
OFDM transmission. Besides PAPR reduction, an important
implication of DFT Spreading is that the independent parallel
sub-channels between the sub-carriers cease to exist. This in
turn leads to difference in its performance limits as compared to
the conventional OFDM system. This paper analyzes the error
probabilities of DFT Spread OFDM systems, and derives their
analytical closed form expressions for the AWGN, fading AWGN,
multipath and fading multipath channel scenarios. Simulation
results presented in last section confirm the validity of the derived
analytical expressions. Platform: |
Size: 2151424 |
Author:ashokec |
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Description: OFDM in Multipath Model Matlab:
ofdmVersion4forCForward: It is for forward channel i.e. transmission of data.
ofdmVersion4forCBackward: This is for feedback transmission for sending modulation state for next frame transmission. Platform: |
Size: 36864 |
Author:Mike |
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Description: 考虑由于多普勒原因引起的衰落对在离散多径信道上传输的QPSK信号的影响-Consider the causes of the decline due to Doppler discrete multipath channel in the transmission of QPSK signals Platform: |
Size: 4096 |
Author:ggg |
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Description: 基于Matlab的移动通信中多径衰落信道的仿真\基于多径传输和多普勒频移的 瑞利（Rayleigh）信道的仿真 主要考虑不同条件下的仿真-Matlab-based mobile communications in the multipath fading channel simulation \ based multi-path transmission and Doppler frequency shift of the Rayleigh (Rayleigh) channel simulation the main consideration of the simulation under different conditions Platform: |
Size: 120832 |
Author:王明 |
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Description: 基于Matlab的移动通信中多径衰落信道的仿真\基于多径传输和多普勒频移的 瑞利（Rayleigh）信道的仿真 主要考虑不同条件下的仿真-Matlab-based mobile communications in the multipath fading channel simulation \ based multi-path transmission and Doppler frequency shift of the Rayleigh (Rayleigh) channel simulation the main consideration of the simulation under different conditions Platform: |
Size: 1024 |
Author: |
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Description: The major evolution of UMTS (Universal Mobile Telecommunications System) in recent years
is the High Speed Downlink Packet Access (HSDPA)which provides data rates up to 10Mbps. The
implementation of HSDPA includes multicodes transmission in joint application with Adaptive
Modulation and Coding (AMC) as well as Hybrid Automatic Repeat reQuest (HARQ).
This thesis deals with the implementation of the HSDPA simulator in FDD (Frequency Division
Duplex) mode according to 3GPP technical specifications. It also aims to study the HARQ
algorithms for HSDPA. The performance of AMC is significantly degraded when higher order
modulation (16-QAM) is used in a multipath environnement. Moreover, the HSDPA simulator requires
a very long time of computation to provide good performance in multipath channel. In order
to solve this problem, we have introduced a simplified simulator which exploits the performance
of HSDPA over gaussien channel as look-up tables to compute the block error rate in multipath
channel. Platform: |
Size: 801792 |
Author: |
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Description: 由于多径和移动台运动等影响因素，使得移动信道对传输信号在时间、频率和角度上造成了色散，如时间色散、频率色散、角度色散等等，因此多径信道的特性对通信质量有着至关重要的影响，而多径信道的包络统计特性成为我们研究的焦点。根据不同无线环境，接收信号包络一般服从几种典型分布，如瑞利分布、莱斯分布和Nakagami-m分布。-Because multipath and mobile and other sports influence factor, makes mobile channel in transmission in time and frequency signal and Angle caused the dispersion, such as time dispersion, frequency dispersion, Angle dispersion, and so on, thus multipath channel of communication with the characteristics of quality is very important, while the effect of multipath channel (the statistical properties become the focus of our research. According to different wireless environment, receiving signals envelope general subject to several typical distribution, such as Rayleigh distribution, rice distribution and Nakagami-m distribution.
Platform: |
Size: 1024 |
Author:liufan |
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Description: 基于多径传输和多普勒频移的 瑞利（Rayleigh）信道的仿真 主要考虑不同条件下的仿真-Based on the multi-path transmission and Doppler frequency shift of the Rayleigh (Rayleigh) channel simulation to consider the simulation under different conditions Platform: |
Size: 120832 |
Author:曹阳阳 |
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Description: 移动通信中在不同条件下多径传输和多普勒频移的瑞利信道的仿真-Mobile Communication in different conditions of multipath and Doppler shift transmission Rayleigh channel simulation Platform: |
Size: 121856 |
Author:李江乔 |
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Description: 由于多径效应和移动台运动等影响因素，使得移动信道对传输信号在时间、频率和角度上造成了色散，即时间色散、频率色散、角度色散等等，因此多径信道的特性对通信质量有着重要的影响，而多径信道的包络统计特性则是我们研究的焦点。根据不同无线环境，接收信号包络一般服从几种典型分布，如瑞利分布、莱斯分布等。在此专门针对服从瑞利分布的多径信道进行模拟仿真，进一步加深对多径信道特性的了解。-Due to multipath effects and the mobile station sports and other factors, making the mobile channel for the transmission signal in time, frequency and angle, causing a dispersion, namely the time dispersion, frequency dispersion, angular dispersion, etc., so the multipath characteristics of the channel quality of communication have an important impact, and multipath channel envelope statistical properties are the focus of our study. Depending on the wireless environment, the received signal envelope generally subject to several typical distributions such as Rayleigh, Rice distribution. In this specific multipath Rayleigh distribution channel simulation, further deepen the multipath channel characteristics understanding. Platform: |
Size: 519168 |
Author:Guo |
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Description: 一篇非常实用的无线通信方向的文献，是关于cdma系统中doa估计的经典-The use of antenna arrays in wireless communications
makes it possible to estimate the directions of arrival (DOAs)
of impinging waveforms. The latter can be exploited to enhance
channel estimation accuracy or as an input for advanced mobile
positioning systems. In this paper, we consider the uplink of a
multicarrier code-division multiple-access (MC-CDMA) network
in which the base station is endowed with multiple receiving antennas
arranged in a uniform linear array. Transmission takes place
over a multipath channel, and the goal is the joint estimation of
the channel responses and DOAs of the uplink signals. In doing so,
we follow a maximum-likelihood (ML) approach and assume that
users transmit orthogonal training sequences to facilitate the task
of separating the signals. This way, all unknown parameters are
estimated independently of each other with affordable complexity.
Theoretical analysis and computer simulations are used to assess
the performance of the propose Platform: |
Size: 249856 |
Author:Zhang Lin |
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Description: OFDM程序代码，其中包含了调制过程和降低峰均比以及在多径信道中的传输并对接收到的信号进行译码判决。-OFDM program code, which includes the modulation process and reduce the peak rate and transmission in the multipath channel and received signal decoding.
Platform: |
Size: 9216 |
Author:dukexin |
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Description: OFDM程序代码，其中包含了调制过程和降低峰均比以及在多径信道中的传输并对接收到的信号进行译码判决。-OFDM program code, which includes the modulation process and reduce the peak rate and transmission in the multipath channel and received signal decoding. Platform: |
Size: 9216 |
Author:orrkgara |
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Search - transmission multipath channel