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Non-linear channel equalization using adaptive MPNN

delete2009-06-01
delete4
PRE
AI
S
Sasmita Padhy
S
Siba Prasada Panigrahi *
P
Prasanta Kumar Patra
S
Santanu Kumar Nayak
DOI:10.1016/j.asoc.2009.02.009delete
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摘要

摘要

En 中文
In this paper the Modified Probabilistic Neural Network (MPNN) is used for dealing with the problem of channel equalization. Some improvements are suggested for the MPNN so that it is more suitable for the current problem. Firstly, the MPNN is extended to process complex signals. Secondly, a stochastic gradient adaptation technique is proposed, such that when the network is being employed to equalize a slowly varying channel, it can self-adapt to the changing environment. Simulations have shown that the MPNN is able to effectively equalize 4-QAM symbol sequences transmitted through a non-linear, slowly time-varying channel. Finally, methods that further reduce the size of the network are proposed. Simulations show that the proposed method is able to reduce the size of the network considerably. (C) 2009 Elsevier B.V. All rights reserved.
Keyword:
Channel equalization
Adaptive equalization
Neural network
Probabilistic Neural Network
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期刊

Applied Soft Computing 封面图
Applied Soft Computing
IF:
6.6
论文数:
1.4W
被引数:
4.8W

机构

B
Berhampur University
学者数:
475
论文数: 290
被引数: 233
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