Description: 盲均衡技术能够仅利用接收信号的统计特性对信道特性进行均衡，克服了传统自适应均衡技术需要训练序列、降低系统有效信息传输率的缺陷，成为目前的研究热点。本文简单介绍了通信中的盲均衡技术，并针对一个简单的信道模型给出了基于遗传算法的盲均衡算法。仿真结果表明，多次迭代的盲均衡的均值能够很好地代表未知信道的性能。
-Blind equalization was an adaptive equalization technique,which could equalize the properties of the
channel just using the statistic properties of the received signal and overcome the disadvantages of conventional
adaptive equalization techniques which required a training sequence and reduce effective information rate in system
transmission.This paper reviewed the blind equalization,and built a simple single-input-multiple-output
model.A blind equalization algorithm based on genetic algorithm was proposed.The simulation results showed that the algorithm had better performances.
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Size: 175104 |
Author:张洋 |
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Description: This contribution considers semi-blind adaptive equalization for communication systems that employ high-throughput quadrature
amplitude modulation signalling. A minimum number of training symbols, approximately equal to the dimension
of the equalizer, are first utilized to provide a rough initial least-squares estimate of the equalizer’s weight vector. A
novel gradient-Newton concurrent constant modulus algorithm and soft decision-directed scheme are then applied to adapt
the equalizer. The proposed semi-blind adaptive algorithm is capable of converging fast and accurately to the optimal
minimum mean-square error equalization solution. Simulation results obtained demonstrate that the convergence speed of this
semi-blind adaptive algorithm is close to that of the training-based recursive least-square algorithm Platform: |
Size: 185344 |
Author:yh |
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Description: 基于LMS的自适应信道均衡，训练序列采用QPSK信号，从星座图可直观的观察结果-LMS-based adaptive channel equalization, the training sequence using QPSK signal constellation can be observed from the observation Platform: |
Size: 1024 |
Author:tianle |
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Description: 进行帧同步的目的是为了得到帧头的位置，以分辨以符号周期为单位的延时。本质上，目的是寻找一个接收端已知的已发送信号的参考信号（即训练序列）以进行后续的如信道估计和信道均衡的操作。有关帧同步的理论有很多，这里只实现一种基于训练序列的相关性质的方法。(The purpose of frame synchronization is to get the position of the frame header to resolve the delay in symbol periods. In essence, the purpose is to find a reference signal (ie a training sequence) of the transmitted signal known to the receiving end for subsequent operations such as channel estimation and channel equalization. There are many theories about frame synchronization, here only one method based on the nature of training sequences is implemented.) Platform: |
Size: 260096 |
Author:hookdd
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Search - training based equalization