Title :
A hybrid Cramér-Rao bound for the channel estimation of non-orthogonal, disintegrated, amplify-and-forward cooperative OFDM systems
Author :
Chou, Kao-Peng ; Lin, Jia-Chin
Author_Institution :
Dept. of Commun. Eng., Nat. Central Univ., Jhongli, Taiwan
Abstract :
In this paper, a hybrid Cramér-Rao bound (HCRB) for the channel estimation of non-orthogonal, disintegrated, amplify-and-forward (NAF) relaying systems is derived. The HCRB is an effective benchmark for examining channel estimation performance. Several conventional frequency-domain channel estimations, such as the least-squares (LS), minimum-mean-square-error (MMSE) channel estimators are simulated and compared with the derived HCRB.
Keywords :
OFDM modulation; amplify and forward communication; channel estimation; cooperative communication; least mean squares methods; HCRB; MMSE channel estimator; NAF relaying systems; amplify-and-forward relaying system; cooperative OFDM system; frequency-domain channel estimation; hybrid Cramér-Rao bound; least-squares estimator; minimum-mean-square-error estimator; nonorthogonal OFDM system; Channel estimation; Estimation; OFDM; Protocols; Relays; Signal to noise ratio;
Conference_Titel :
Communications and Information Technology (ICCIT), 2012 International Conference on
Conference_Location :
Hammamet
Print_ISBN :
978-1-4673-1949-2
DOI :
10.1109/ICCITechnol.2012.6285822
