本文研究了感知器在通信信道均衡中的应用。
In thi paper, we study the application of perception to the communication channel equalization problem.
然后介绍了信道模型和信道均衡的基本原理。
Then, in this paper, channel model and equalization theory are described.
数字传输系统的关键在于载波同步和信道均衡。
The key of digital transmission system lies in carrier synchronization and channel equalization.
因此，信道估计和信道均衡之间有着紧密联系。
Therefore channel estimation and equalization have compact relationship.
因此，对OFDM系统的信道均衡设计提出了要求。
So OFDM system has requirement to research and design radio channel equalizer.
著名的恒模算法（CMA）是一种重要的盲信道均衡方法。
The well-known constant modulus algorithm (CMA) is a very important approach for blind channel equalization.
在本文中我们提出一种基于复数赫布类型算法的自适应信道均衡器。
In this paper we proposed an adaptive equalizer based on complex Hebbian-type learning algorithm.
此算法由信道均衡器和匹配滤波器组成，信道均衡是基于迫零均衡准则。
It consists of a channel equalizer and code matched filter. The equalization algorithm is based on zero forcing (ZF) criterion.
自适应滤波广泛应用于系统识别、信号分离、信道均衡以及回声抵消等领域。
Adaptive filtering is widely used in system identification, signal separation, channel equalization and echo cancellation and other fields.
本文的研究内容就是频率选择性衰落信道和双衰落信道下的OFDM信道均衡技术。
In this thesis, we study equalization techniques for OFDM over the frequency selective fading channel and doubly selective fading channel respectively.
信道估计和信道均衡无疑是数字电视地面广播标准接收机设计中所要考虑的核心问题之一。
Channel estimation and equalization are one of the core problems in the design of receivers in Digital Television Broadcasting-Terrestrial Standard.
然而，要实现这一目标，仍然存在着大量的问题有待解决，而信道均衡技术就是其中之一。
However, to achieve this goal, there are still a lot of problems to be resolved, and channel equalization technology is one of them.
神经网络是一种非线性动力学系统，在二进制系统信道均衡实现方面得到非常成功的应用。
The neural network, which is a nonlinear dynamic system, has been successfully applied in the channel equalization of binary digital communication systems.
在计算机仿真自适应信道均衡中，该算法的性能明显优于传统的LMS算法，而计算量增加甚少。
The new algorithm is better than classical LMS that is verified by computer simulation of adaptive channel equalizer, while the computional amount is only increased slightly.
在计算机仿真自适应信道均衡中，该算法的性能明显优于传统的LMS算法，而计算量增加甚少。
The new algorithm is better than classical LMS that is verified by computer simulation of adaptive channel equalizer, while the computational amount is only increased slightly.
本项目在国家自然科学基金的支持下，在阵列信号盲分离及信道均衡方面进行了多个方面的研究工作。
This project has completed several research works on array-signal blind separation and blind channel equalization under support of NSFC.
近些年来盲信道均衡引起了人们极大的兴趣，其中应用最广泛的自适应均衡算法是盲信道均衡恒模算法。
In the last few years, blind equalization techniques have gained an increasing interest. The most popular blind adaptation algorithm is the constant modulus algorithm (CMA).
提出了一种改进的LMS算法，使基于该算法的半盲自适应信道均衡器适用于时变信道中OFDM系统。
An improved LMS Algorithm is presented in this paper, based on which there is a semi-blind adaptive equalizer of time-variant channel for OFDM systems.
通过系统辨识和自适应信道均衡的计算机仿真实验证明，该算法的性能跟其它算法相比具有明显的优越性。
The computer simulations under the condition of system identity and adaptive channel equalization confirm the better performance of these algorithms, compared to other algorithms.
高速数据传输中信道均衡算法大致分为三类：即基于LMS准则、LS准则和人工神经网络的自适应算法。
Algorithms currently used for high speed data transmission over voice-band channels can be based on following three principles: on LMS criterion, on ls criterion or on artificial neural network.
此法可适用于任何盲均衡算法(信号信道均衡的拓延)，它也可以应用于源信号数目预先未知的情况。计算机模拟结果证实此方法的确是非常有效的。
It can adapt to any other blind equalization algorithms and be applied to the case that number of source signal is not known in advance.
其中软件算法部分全部在主机CPU中实现，其中包括信道初始化，比特分配策略，符号同步，信道均衡，回波抵消，编码解码，FFT和IFFT等等。
The software algorithms are realized in host CPU, including channel parameters estimation, bit allocation, equalization, echo cancellation, FFT, IFFT, encoding, decoding, etc.
本文对于通信信道提出了一种新的盲均衡准则。
A novel criterion of blind equalization is introduced for communication channels.
提出了一种对抗前径信道的重叠结构均衡算法，可以降低系统对抗前径时对前馈滤波器长度的依赖，提高系统的性能并降低复杂度。
Propose an overlap structure equalization algorithm for the pre-echo channel, which can weaken the dependence on feedforward equalizer, enhance the performance and reduce the complexity.
因此，非线性信道的均衡技术就成为高速无线通信领域的一个研究热点。
So, the research on the nonlinear channel equalization is now a hot spot in the high-rated wireless communication area.
提出的辅助判决均衡器在用于滤波多音调制系统时，可克服判决反馈均衡器在多径信道下的地板效应。
For the FMT system, a decision-aided equalizer could overcome the floor effect of the decision feedback equalizer which is caused by the multi-path channel.
传统的盲信道辨识和均衡都是基于高阶统计算法。
Traditionally, blind channel identification and equalization are all based on high order statistics.
另外在未来宽带MIMO无线通信系统中，通常面临频率选择性衰落信道，传统高性能均衡器就会变得异常复杂。
In addition, there will be frequency selective fading in the future broadband MIMO wireless communication systems, and the traditional high-performance equalizer will become extremely complicated.
本文主要研究了OFDM的信道估计和均衡等关键技术。
In this paper, the key techniques of OFDM systems, such as equalization and channel estimation are studied.
对于传统的OFDM系统来说，如果循环前缀的长度大于信道的时延扩散值，则可以通过简单的频域均衡来解调OF DM信号。
If the length of its cyclic prefix is larger than the delay spread of transmission channel, we can get a simple frequency equalizer to demodulate OFDM signal.
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