Title :
Impact of Imperfect Channel State Information on ARQ Schemes over Rayleigh Fading Channels
Author :
Le Cao ; Kam, Pooi Yuen ; Tao, Meixia
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore
Abstract :
With imperfect channel state information (CSI) acquired by channel estimation at the receiver, the performances of automatic-repeat-request (ARQ) systems are evaluated as a function of the accuracy of channel estimation. A link between network-layer performances and physical-layer parameters is therefore established. We study in particular the good-put and the accepted packet error rate as a function of the channel estimation mean square error (MSE) and the factors which affect the MSE. The results enable us to analyze the optimum allocation of energy for data transmission and energy for pilot channel estimation so as to maximize the good-put.
Keywords :
Rayleigh channels; automatic repeat request; channel estimation; mean square error methods; ARQ scheme; Rayleigh fading channel; automatic-repeat-request system; channel estimation; data transmission; energy optimum allocation; imperfect channel state information; mean square error method; network layer; physical-layer parameter; receiver; Automatic repeat request; Binary phase shift keying; Channel estimation; Channel state information; Data communication; Error analysis; Fading; Forward error correction; Mean square error methods; Transmitters;
Conference_Titel :
Communications, 2009. ICC '09. IEEE International Conference on
Conference_Location :
Dresden
Print_ISBN :
978-1-4244-3435-0
Electronic_ISBN :
1938-1883
DOI :
10.1109/ICC.2009.5199066
