Yazar
Ding, Y., Uysal, Murat
Basım Tarihi
2012-12
Basım Yeri
-
Springer Science+Business Media
Konu
Achievable rate, Amplify-and-forward relaying, Channel estimation, Power allocation, OFDM
Tür
Süreli Yayın
Dil
İngilizce
Dijital
Evet
Yazma
Hayır
Kütüphane
Özyeğin Üniversitesi
Demirbaş Numarası
1687-1472
Kayıt Numarası
05b180d1-44c7-4f91-90a8-97935a772fab
Lokasyon
Electrical & Electronics Engineering
Tarih
2012-12
Notlar
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin
In this article, we investigate the information-theoretical performance of a cooperative orthogonal frequency division multiplexing (OFDM) system with imperfect channel estimation. Assuming the deployment of training-aided channel estimators, we derive a lower bound on the achievable rate for the cooperative OFDM system with amplify-and-forward relaying over frequency-selective Rayleigh fading channels. The bound is later utilized to allocate power among the training and data transmission phases. Numerical results demonstrate that the proposed power allocation scheme brings between 5 and 19% improvement depending on the level of signal-to-noise ratio and relay locations.
Cilt
372
