Title :
On Achievable Data Rates and Optimal Power Allocation in Fading Channels with Imperfect CSI
Author :
Almustafa, Khaled ; Primak, Serguei ; Willink, Tricia ; Baddour, Kareem
Author_Institution :
Univ. of Western Ontario, London
Abstract :
Achievable rates of communication systems with pilot-based channel estimation are investigated. Analytical expressions for the maximum achievable rates of such systems are derived for a given quality of estimation. It is shown how the classical waterfllling algorithm should be modified for the case of imperfect channel state information at the transmitter. The impact of the estimation scheme on achievable rates is studied and optimal frame lengths are found for analytical models with varying angular spreads.
Keywords :
channel capacity; channel estimation; fading channels; radio transmitters; achievable data rates; channel capacity; classical waterfllling algorithm; communication systems; fading channels; imperfect CSI; imperfect channel state information; optimal frame lengths; optimal power allocation; pilot-based channel estimation; radio transmitter; Additive white noise; Analytical models; Channel capacity; Channel estimation; Channel state information; Communication systems; Estimation error; Fading; Gaussian noise; Transmitters;
Conference_Titel :
Wireless Communication Systems, 2007. ISWCS 2007. 4th International Symposium on
Conference_Location :
Trondheim
Print_ISBN :
978-1-4244-0979-2
Electronic_ISBN :
978-1-4244-0979-2
DOI :
10.1109/ISWCS.2007.4392346
