Description: ofdm系统模型，包含信道估计 FFT变换 QPSK 16QAM调制 插入导频等，非常全面。-OFDM system model, including channel estimation FFT transform QPSK 16QAM modulation insert Pilot and so on, very comprehensive. Platform: |
Size: 27648 |
Author:guang_j |
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Description: ofdm系统matlab仿真m程序，包括信道编解码，多径信道，信道估计以及误码率统计等功能-matlab simulation m OFDM system procedures, including channel coding and decoding, multi-path channel, channel estimation, as well as features such as bit error rate statistics Platform: |
Size: 141312 |
Author:李辉 |
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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: In this Mfile, I want to investigate the performance of LSE algorithm in
OFDM channel estimation with methods of equalizations like MRC and ZF.
For further information see the "Xiaodong Cai and Georgios B. Giannakis, Error Probability Minimizing Pilots for OFDM with M-PSK Modulation over Rayliegh-Fading Channels,” IEEE Transactions on Vehicular technology, vol. 53, No. 1, pp 146-155, Jan. 2004. Platform: |
Size: 28672 |
Author:Ardalan |
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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: carrier_count= 200
bits_per_symbol = 2
symbols_per_carrier = 50
loop=10
num=5
循环次数 10
子载波数 200
位数/ 符号 2
符号数/ 载波 50
训练符号数 5
循环前缀长度 T/4
调制方式 QAM
多径信道数 2（缺省）
信道最大时延 5 (单位数据符号)
仿真条件 收发之间严格同步
一个OFDM系统 在瑞利信道环境下 包括信道估计 比较适合初学者-carrier_count = 200 bits_per_symbol = 2 symbols_per_carrier = 50 loop = 10 num = 5 10 cycles 200 of the median number of subcarriers/symbol and the number of symbols of 2 /50 of the carrier the number of training symbol cyclic prefix length of 5 T/4 modulation QAM Number of multi-path channel 2 (default) 5 channel maximum delay (in the data symbol) strict synchronization between the simulation conditions receive an OFDM system in Rayleigh channel environment, including more suitable for channel estimation beginner Platform: |
Size: 2048 |
Author:Mir Ge |
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Description: OFDM信道估计，该文件夹包括19个M文件，包括误码率检测，插值计算，瑞利信道等-OFDM channel estimation, the folder includes 19 M files, including bit error rate detection, interpolation, Rayleigh channel, etc. Platform: |
Size: 10240 |
Author:hanshuanglin |
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Description: OFDM系统中理想信道估计与训练序列信道估计对比，包含QPSK和16QAM两种不同调制方式-Ideal channel estimation and training sequence channel estimation in OFDM system , contains QPSK and 16 qam two different modulation mode Platform: |
Size: 2048 |
Author:陈默默 |
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Description: A 16-QAM signal X, whose power is normalized as unity, is transmitted with OFDM over the discrete-time channel model h which has been used in Homework #2 and #3. As depicted in the below figure, the transmitter (TX) is now equipped with an N-point IDFT and the receiver (RX) with an N-point DFT, along with adding cyclic prefix (CP) and removing CP removal, respectively. The complex AWGN n is set with 20 dB SNR. Suppose that N=256 and the length of CP is 64. Assuming the OFDM system works with perfect synchronization. -Generate two pseudo random (PN) sequences for X, each with a length of 256 samples which are taken {+1,-1}, and add them before the 16-QAM data with a proper CP. The OFDM frame is depicted in the following figure. PN1 and PN2 are used for channel estimation now. Suppose the PN patterns are known at RX. Use the least squares (LS) method to estimate the channel by averaging the results obtained individually PN1 and PN2. (When perfoming the DFT window for the received signal at RX, you need to notice that the channel results in a delay of 22 samples.) Platform: |
Size: 210944 |
Author:淘爱57 |
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