A new step-size searching algorithm based on fuzzy logic and neural networks   for LMS adaptive beamforming systems

Walter OROZCO-TUPACYUPANQUI; Mariko NAKANO-MIYATAKE; Hector Perez MEANA

Makale detayları

A new step-size searching algorithm based on fuzzy logic and neural networks for LMS adaptive beamforming systems

Yazarlar:

Walter OROZCO-TUPACYUPANQUI | Mariko NAKANO-MIYATAKE | Hector Perez MEANA

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2016 Vol.24 Issue 5, pp.4322-4338

Belge Tipi:

Makale

Yayın Tarihi:

9/2016

Belge Dili:

Türkçe

Document ID (Org No.):

2000741655

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

In this paper, a novel algorithm based on fuzzy logic and   neural networks is proposed to find an approximation of the optimal step   size μμ\mu  for least-mean-squares (LMS) adaptive beamforming systems. A new   error ensemble learning (EEL) curve is generated based on the final   prediction value of the ensemble-average learning curve of the LMS adaptive   algorithm. This information is classified and fed into a back propagation   neural network, which automatically generates membership functions for a   fuzzy inference system. An estimate of the optimal step size is obtained   using a group of linguistic rules and the corresponding defuzzification   method. Computer simulations show that a useful approximation of the optimal   step size is obtained under different signal-to-noise plus interference   ratios. The results are also compared with data obtained from a statistical   analysis performed on the EEL curve. As a result of this application, a   better mean-square-error is observed during the training process of the   adaptive array beamforming system, and a higher directivity is achieved in   the radiation beam patterns.

Makale detayları

A new step-size searching algorithm based on fuzzy logic and neural networks for LMS adaptive beamforming systems

Yazarlar: Walter OROZCO-TUPACYUPANQUI | Mariko NAKANO-MIYATAKE | Hector Perez MEANA

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2016 Vol.24 Issue 5, pp.4322-4338

Belge Tipi: Makale

Yayın Tarihi: 9/2016

Belge Dili: Türkçe

Document ID (Org No.): 2000741655

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Walter OROZCO-TUPACYUPANQUI | Mariko NAKANO-MIYATAKE | Hector Perez MEANA

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2016 Vol.24 Issue 5, pp.4322-4338

Belge Tipi:

Makale

Yayın Tarihi:

9/2016

Belge Dili:

Türkçe

Document ID (Org No.):

2000741655

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632