Optimization of pilot tones using differential evolution algorithm in MIMO-OFDM systems

Muhammet Nuri SEYMAN; Necmi TAŞPINAR

Makale detayları

Optimization of pilot tones using differential evolution algorithm in MIMO-OFDM systems

Yazarlar:

Muhammet Nuri SEYMAN | Necmi TAŞPINAR

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2012 Vol.20 Issue 1, pp.15-23

Belge Tipi:

Makale

Yayın Tarihi:

12/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000743623

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

In this paper, we propose a differential evolution (DE)  algorithm for optimizing the placement and power of the pilot tones  that are utilized by a least square (LS) algorithm for channel  estimation in multiple-input and multiple-output orthogonal  frequency-division multiplexing (MIMO-OFDM) systems.  Computer  simulations demonstrated that the performance of the LS algorithm was  increased by optimizing the pilot tones with the DE algorithm instead  of locating them orthogonally.  We used the upper bound of the mean  square error (MSE) as a fitness function of the DE algorithm for  optimization tasks.  With the use of an upper bound, it is not  necessary to compute the matrix inversion that is needed in computing  the MSE.

 

In this paper, we propose a differential evolution (DE)  algorithm for optimizing the placement and power of the pilot tones  that are utilized by a least square (LS) algorithm for channel  estimation in multiple-input and multiple-output orthogonal  frequency-division multiplexing (MIMO-OFDM) systems.  Computer  simulations demonstrated that the performance of the LS algorithm was  increased by optimizing the pilot tones with the DE algorithm instead  of locating them orthogonally.  We used the upper bound of the mean  square error (MSE) as a fitness function of the DE algorithm for  optimization tasks.  With the use of an upper bound, it is not  necessary to compute the matrix inversion that is needed in computing  the MSE.

Makale detayları

Optimization of pilot tones using differential evolution algorithm in MIMO-OFDM systems

Yazarlar: Muhammet Nuri SEYMAN | Necmi TAŞPINAR

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2012 Vol.20 Issue 1, pp.15-23

Belge Tipi: Makale

Yayın Tarihi: 12/2011

Belge Dili: Türkçe

Document ID (Org No.): 2000743623

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Muhammet Nuri SEYMAN | Necmi TAŞPINAR

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2012 Vol.20 Issue 1, pp.15-23

Belge Tipi:

Makale

Yayın Tarihi:

12/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000743623

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632