Description: 建立了OFDM系统仿真平台，主要可以测试时域滤波信道估计方式下系统的误码率性能-established OFDM system simulation platform, mainly to test time-domain filter channel estimation method under the BER performance Platform: |
Size: 5511 |
Author:guojing |
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Description: 此程序为OFDM的信道仿真程序。通过计算出信道后，进行ber误码率的计算。-This procedure for the OFDM channel simulation program. By calculating the channel, the bit error rate for the calculation of ber. Platform: |
Size: 3072 |
Author:小王 |
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Description: 建立了OFDM系统仿真平台，主要可以测试时域滤波信道估计方式下系统的误码率性能-established OFDM system simulation platform, mainly to test time-domain filter channel estimation method under the BER performance Platform: |
Size: 5120 |
Author:guojing |
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Description: 设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线-Design a specific guide-assisted channel estimation method, using Simulink simulation, measurement BPSK modulation BER performance. Draw-bit signal to noise ratio and channel estimation mean square error curve, draw-bit signal to noise ratio and bit error rate curve Platform: |
Size: 176128 |
Author:华建 |
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Description: 很好的OFDM的基于MATLAB的仿真程序包，且包含了最终结果图.-montecarlo
type montecarlo in the command window and wait for a long time..
_simulation of the complete OFDM system.
_use of a very large file in order to get probabilities.
_loop over different value of the noise.
_compute the SNR for each value of the noise.
_provide the SNR/BER plot.
if you are in a rush : simulation_system !!
go into the right folder and type simulation_system in the command window.
_then type the value of the noise power (range = [-20,10])
_the function provides the channel estimation, the bit allocation,
and a plot illustrating the errors.
_this is a fast function (less pilot, no synchronization, small file). Platform: |
Size: 96256 |
Author:田静 |
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Description: 4QAM调制的OFDM多径传输，对不同的信道估计算法的误码性能进行比较-OFDM modulation 4QAM multi-path transmission, for different channel estimation algorithm to compare the BER performance Platform: |
Size: 3072 |
Author:闫哲 |
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Description: 设计了一个OFDM接收机，并采用1fI公司的TMS320C6416芯片进行实现。在假设理想
同步的前提下，该系统进行了FFT变化、使用了Ls(最小二乘法)进行信道估计，并且采用了
QPSK算法进行解调。最后将接收机输出数据与发端数据进行比较，在不同信噪比情况下计算其
误码率，得出了比较理想的结果。-An OFDM receiver is designed in山is paper and realized on the platform of the 1MS32OC6416 chip
of the TI company．Under the assumption of ideal synchronization．n叩transformation is realized in the system
wit}l LS method implemented in the channel estimation module and QPSK used in the demodulation module．
Finally，BER is calculated in different cases of SNR and the result is achieved as expected． Platform: |
Size: 243712 |
Author:王熹 |
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Description: 这是一个基于空时分组编码的MIMO_OFDM通信系统的仿真设计。此系统包括QPSK调制解调，IFFT调制，空时编解码，基于训练符号的信道估计等通信模块。
-This is a space-time block coding based on the MIMO_OFDM Communication System Simulation and Design. This system consists of QPSK modulation and demodulation, IFFT modulation, space time coding and decoding, based on training symbols such as communication channel estimation module. Platform: |
Size: 12288 |
Author:小于儿 |
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Description: 基于16QAM调制解调的OFDM信道估计，计算了不同信噪比下的误码性能曲线，并画出了图。-Comb based on the OFDM pilot channel estimation, calculation of the BER performance under different signal to noise ratio curve, and draw the map. Platform: |
Size: 1024 |
Author:tang |
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Description: Matlab的OFDM仿真，信道估计，有BER曲线 该程序进行了简单的LMS信道估计，没有加入与MMSE等其他信道估计算法的比较；-Matlab simulation of OFDM, channel estimation, BER curves the program was simple LMS channel estimation, not joined with the MMSE channel estimation algorithm and other comparative Platform: |
Size: 4096 |
Author:mama |
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Description: — Performance comparison of multiuser OFDM-TDMA and
OFDMA systems by considering physical and link cross-layer behavior
is conducted in this work. We provide a new framework for performance
evaluation that centers on “ scheduling” with several different
subcarrier/bit allocation schemes. The performance metrics include: the
bit rate, the bit error rate (BER), packet throughput and delay. The
instantaneous channel conditions of users are assumed to be available
at the base station, which can be achieved by channel estimation at the
mobile terminal (MT), and then fed back to the base station through
a control channel. To perform the link layer comparison, we model the
Rayleigh fading channel with a nite-state Markov chain, and adopt the
M/G/1 queueing model as the analytical tool. Computer simulation is
performed to verify conducted analytical results-— Performance comparison of multiuser OFDM-TDMA and
OFDMA systems by considering physical and link cross-layer behavior
is conducted in this work. We provide a new framework for performance
evaluation that centers on “ scheduling” with several different
subcarrier/bit allocation schemes. The performance metrics include: the
bit rate, the bit error rate (BER), packet throughput and delay. The
instantaneous channel conditions of users are assumed to be available
at the base station, which can be achieved by channel estimation at the
mobile terminal (MT), and then fed back to the base station through
a control channel. To perform the link layer comparison, we model the
Rayleigh fading channel with a nite-state Markov chain, and adopt the
M/G/1 queueing model as the analytical tool. Computer simulation is
performed to verify conducted analytical results Platform: |
Size: 166912 |
Author:alaa |
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Description: Simulation program to realize OFDM transmission system using( proposed slantlt transform instead FFT transform)with pilot channel estimation in a fading channel for (BPSK,QPSK,8PSK and 16PSK) modulation and for two type of error plot BER(Bit error rate) and PER(Packet error rate) Platform: |
Size: 8192 |
Author:ghanim |
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Description: A multiple-input multiple-output (MIMO) communication system combined with the orthogonal frequency division multiplexing (OFDM) modulation technique can achieve reliable
high data rate transmission over broadband wireless channels. Channel state information for both single-input single-output (SISO) and MIMO systems based on pilot aided arrangement is
investigated in this paper. The estimation of channel at pilot frequencies with conventional Least Square (LS) and Minimum Mean Square (MMSE) estimation algorithms is carried out
through Matlab simulation. The performance of MIMO OFDM and SISO OFDM are evaluated on the basis of Bit Error Rate (BER) and Mean Square Error (MSE) level.-A multiple-input multiple-output (MIMO) communication system combined with the orthogonal frequency division multiplexing (OFDM) modulation technique can achieve reliable
high data rate transmission over broadband wireless channels. Channel state information for both single-input single-output (SISO) and MIMO systems based on pilot aided arrangement is
investigated in this paper. The estimation of channel at pilot frequencies with conventional Least Square (LS) and Minimum Mean Square (MMSE) estimation algorithms is carried out
through Matlab simulation. The performance of MIMO OFDM and SISO OFDM are evaluated on the basis of Bit Error Rate (BER) and Mean Square Error (MSE) level. Platform: |
Size: 729088 |
Author:loihuynh |
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Description: MIMO OFDM 技术将成为第4 代移动通信系统的关键技术, 因MIMO OFDM 对时间和频率偏移非常敏感,
因此MIMO OFDM 同步显得尤为重要。提出了一种新的MIMO OFDM 定时同步和频偏同步技术。以GCL 序列为基础设
计了一个新的符合MIMO OFDM 同步技术的导频序列, 通过对该导频序列进行2 次相关得到频率估计, 并将所得频率
运用到定时同步中, 得到更为准确的时间估计。仿真结果表明, 在相同的信噪比情况下, 该方法可以使得系统的误码
率和帧传送误码率相对传统方法得到进一步减小。-MIMO OFDM will become a key technology of the fourth generation mobile communications system. However, MIMO OFDM is
sensitive to the CFO and timing synchronization, so the MIMO OFDM synchronization technology is very important. This paper proposes an
accurate technique for timing and frequency synchronization of multiple input multiple output ( MIMO ) orthogonal frequency division
multiplexing ( OFDM) systems. The technique derives a new preamble signal based on GCL sequences, according with the MIMJO OFDM
synchronization. The carrier frequency offset ( CFO) estimation is obtained through taking double correlation operations on the preamble signal,
and used in the timing synchronization to gain accurate time estimation. The simulation results show that at the same SNR, the proposed method
can reduce the BER and the frame transmission BER of the system compared to the conventional method. Platform: |
Size: 408576 |
Author:蜡笔 |
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Description: ofd估计信道性能，计算误比特率，包含信号发射，信道估计，信号接收。在高斯信道，采用qdpsk调制解调。-ofd channel estimation performance, bit error rate calculation, comprising a signal transmitter, channel estimation, signal reception. In the Gaussian channel, using qdpsk modem. Platform: |
Size: 2048 |
Author:深小贱 |
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Description: Matlab简单的OFDM仿真，信道估计，有BER曲线，简单实用，程序简洁，大家看一下吧。-Simple OFDM Matlab simulation, channel estimation, there are BER curves, simple and practical, simple procedures, we look at it. Platform: |
Size: 10240 |
Author: |
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Description: 通过LS和DFT方法对OFDM实现了信道估计，并对估计后的信道同原始信道进行对比，还有不同信噪比下的误码仿真-Through LS and DFT method to achieve the OFDM channel estimation, and the estimated channel compared with the original channel, as well as the BER simulation under different signal to noise ratio Platform: |
Size: 2048 |
Author:谢越 |
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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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Search - ber estimation OFDM