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Description: 关于低密度奇偶校验码的生成，采用matlab编写，主要是校验矩阵的产生
-on low-density parity-check code generation, prepared using Matlab, mainly for the selection of calibration matrix
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Size: 33792 |
Author: 若冰 |
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Description: QPSK技术具有抗干扰性能强、误码性能好、频谱利用率高等优点,目前广泛应用于数字通信、数字视频广播、数字卫星广播等领域 详细介绍了QPSK技术的工作原理、性能以及使用调相法和相位选择法产生QPSK信号的电路方框图及特点。-QPSK technology has strong anti-interference performance, BER performance and spectral efficiency advantages, at present widely used in digital communications, digital video broadcasting, digital satellite broadcasting and other areas described in detail QPSK technology works, performance and the use of phase modulation method and phase selection have a QPSK signal and characteristics of the circuit block diagram.
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Size: 62464 |
Author: feixiang |
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Description: Script for computing the BER for BPSK modulation in a
Rayleigh fading channel with selection diversity
-Script for computing the BER for BPSK modulation in a
Rayleigh fading channel with selection diversity
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Size: 1024 |
Author: mohanad1 |
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Description: 通过MATLAB软件；通过仿真得出性能曲线；从而比较bpsk的性能-The bit-error rate (BER) of binary phase-shift keying
in Rayleigh fading, using the Alamouti transmission scheme and
receiver selection diversity in the presence of channel-estimation
error, is studied. Closed-form expressions for the BER of log-likelihood
ratio selection, signal-to-noise ratio (SNR) selection, switchand-
stay combining selection, and maximum ratio combining are
derived in terms of the SNR and the cross-correlation coefficient
of the channel gain and its corrupted estimate. Two new selection
schemes, space–time sum-of-squares combining selection diversity
and space–time sum-of-magnitudes selection diversity, are
proposed and proven to provide almost the same performance as
SNR selection, but with much simpler implementations. The effects
of channel-
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Size: 340992 |
Author: 刘小洋 |
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Description: For computing the BER for BPSK modulation in a Rayleigh fading channel with selection diversity.
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Size: 1024 |
Author: smich |
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Description: Script for computing the BER for BPSK modulation in a
Rayleigh fading channel with selection diversity- Script for computing the BER for BPSK modulation in a
Rayleigh fading channel with selection diversity
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Size: 1024 |
Author: darrylrex |
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Description: five script.m for
1. BER in Rayleigh fading channel with MRC
2. BER in Rayleigh fading channel with EGC
3. BER in Rayleigh fading channel with selection
4. BER in Rayleigh fading channel with alamoutistbc
5. BER in Rayleigh fading channel with beamforming
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Size: 5120 |
Author: ahla |
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Description: simulating BER for BPSK in Rayleigh channel with selection diversity
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Size: 2048 |
Author: Nandan |
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Description: 在MIMO 2x1天线选择系统中，利用Alamouti编码，计算系统的BER-In the 2x1 antenna selection, the use of Alamouti coding, computing system BER
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Size: 1024 |
Author: hspeak |
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Description: 针对OFDM系统，分成链路级仿真和系统级仿真两个部分。为了降低系统级仿真的复杂度，采用链路级仿真的部分结果。-It contains mainly two parts, i.e. link-level simulator and system-level simulator.
Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.
System-level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.
Link-level simulator support SISO, 1 by x MRC, 2 by 1 STBC/SFBC, 2 by 2 Alamouti, x by 1 Antenna selection, x by y antenna selection.
System-level simulator, currently support only SISO and 1 by 2 MRC.
To start with, go into the folder sys_link_simu, and excute the following commond from matlab:
sys_link_simu_func(a,b)
where a is the link ada
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Size: 286720 |
Author: 王刚名 |
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Description: 基于selection diversity的bpsk BER 计算与性能分析- computing BER under the selection diversity for BPSK signal
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Size: 1024 |
Author: fang qian |
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Description: Abstract—Selection combining cascaded with maximum-ratio
combining (SC/MRC), which is particularly useful when site
diversity is available, combined with low-density parity-check
(LDPC) codes is able to combat the effects of fading. The biterror
rate (BER) expressions of uncoded SC/MRC and SC/MRC
with LDPC codes over an independent and identically distributed
Rayleigh-fading channel are derived based on the Gaussian
approximation approach. These expressions are also applicable
to the selection combining and maximum-ratio combining as
special cases. The derived expressions are in good agreement
with simulation results and approach the density evolution (DE)
thresholds. These expressions are able to achieve a significant
reduction in computational time with a reasonable accuracy for
analyzing the BER performance as compared to simulations and
DE.
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Size: 99328 |
Author: ppdghius |
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Description: 关于OSTBC的天线选择，采用天线选择的Alamouti STBC方案，比较BER性能，由仿真图能得出天线选择方法能够提供比预编码更多的增益。-About OSTBC antenna selection, antenna selection scheme using Alamouti STBC, compare the BER performance, can be reached by a simulation diagram antenna selection method can provide more than pre-coding gain.
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Size: 1024 |
Author: 耿晓文 |
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Description: % Type of different detectors, parameters for Detector.m
ML = 1; % Joint ML Detector
JMMSE = 2; % Joint MMSE Detector
ZF = 3; % Joint Zero-Forcing Detector
% Type of different antenna selection criteria methods
MBER = 1;
MMI = 2;
LAZY = 3;
MNP = 4; %Minimum Noise Power
MMNP = 5;
LAZY2 = 6;
real_ch = 0; % real_ch = 0 refers to simulated channel in MATLAB, otherwise refers to real channel
SNR_dB = 20;% transmit SNR in the simulated channel
nr_frames = 20; % number of frames sent when simulation.
detect_type = ZF; % Detector choice
select_type = MBER; % Antenna selection choice
disp('');
tx(nr_frames);
disp('Press any key to continue');
pause
RF(real_ch,SNR_dB);
disp('Press any key to continue');
pause
BER = rx(detect_type,select_type);
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Size: 3933184 |
Author: hlayumi |
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