Optimal bit and power loading for amplify-and-forward cooperative OFDM systems

Name: Optimal bit and power loading for amplify-and-forward cooperative OFDM systems
Author: Amin, O., Uysal, Murat

İsim	Optimal bit and power loading for amplify-and-forward cooperative OFDM systems
Yazar	Amin, O., Uysal, Murat
Basım Tarihi:	2011-03
Basım Yeri	- IEEE
Konu	OFDM, Power allocation, Bit allocation, Amplify-and-forward relaying, Cooperative network
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1536-1276
Kayıt Numarası	c3e7909a-245e-4826-8ce6-76d23e36ecfb
Lokasyon	Electrical & Electronics Engineering
Tarih	2011-03
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	In this paper, we investigate bit and power allocation strategies for an orthogonal frequency division multiplexing (OFDM) cooperative network over frequency-selective fading channels. We assume amplify-and-forward relaying and consider the bit error rate (BER) performance as our performance measure. Aiming to optimize the BER under total power constraint and for a given average data rate, we propose three adaptive algorithms; optimal power loading (OPL), optimal bit loading (OBL), and optimal joint bit and power loading (OBPL). Our Monte Carlo simulation results demonstrate performance gains through adaptive bit and power loading over conventional non-adaptive systems as well as currently available adaptive cooperative scheme in the literature. The impact of practicalissues on the performance of proposed adaptive schemes such as imperfect channel estimation and limited feedback is further discussed.
DOI	10.1109/TWC.2011.011111.091233
Cilt	10

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Optimal bit and power loading for amplify-and-forward cooperative OFDM systems

Yazar Amin, O., Uysal, Murat

Basım Tarihi 2011-03

Basım Yeri - IEEE

Konu OFDM, Power allocation, Bit allocation, Amplify-and-forward relaying, Cooperative network

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1536-1276

Kayıt Numarası c3e7909a-245e-4826-8ce6-76d23e36ecfb

Lokasyon Electrical & Electronics Engineering

Tarih 2011-03

Notlar Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Örnek Metin In this paper, we investigate bit and power allocation strategies for an orthogonal frequency division multiplexing (OFDM) cooperative network over frequency-selective fading channels. We assume amplify-and-forward relaying and consider the bit error rate (BER) performance as our performance measure. Aiming to optimize the BER under total power constraint and for a given average data rate, we propose three adaptive algorithms; optimal power loading (OPL), optimal bit loading (OBL), and optimal joint bit and power loading (OBPL). Our Monte Carlo simulation results demonstrate performance gains through adaptive bit and power loading over conventional non-adaptive systems as well as currently available adaptive cooperative scheme in the literature. The impact of practicalissues on the performance of proposed adaptive schemes such as imperfect channel estimation and limited feedback is further discussed.

DOI 10.1109/TWC.2011.011111.091233

Cilt 10