Title :
An Improved Power Allocation Strategy with Partial Channel Knowledge for OSTBC
Author :
Jin Libiao ; Li Jianzeng
Author_Institution :
Sch. of Inf. Eng., Commun. Univ. of China, Beijing
Abstract :
An improved power allocation strategy for spatially correlated multiple- input multiple-output (MIMO) systems with parial channel knowledge was proposed in this paper . We design an optimal linear precoder for a space-time coded system assuming knowledge of only the transmit antenna fading correlations. The error-rate performance of a ( 2times2 ) OSTBC system was simulated with proposed power allocation strategy and different correlation coefficients. Compared with existing power allocation schemes based on preceding, the proposed scheme significantly improves the error-rate performance.
Keywords :
MIMO communication; block codes; channel allocation; channel coding; correlation methods; error statistics; fading channels; linear codes; orthogonal codes; precoding; space-time codes; transmitting antennas; OSTBC system; bit-error-rate performance; optimal linear precoder design; partial channel knowledge; power allocation strategy; space-time coded system; spatially correlated multiple-input multiple-output system; transmit antenna fading correlation; Channel capacity; Fading; MIMO; Power engineering and energy; Power system modeling; Rayleigh channels; Receiving antennas; Symmetric matrices; Transmitters; Transmitting antennas;
Conference_Titel :
Circuits and Systems for Communications, 2008. ICCSC 2008. 4th IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1707-0
Electronic_ISBN :
978-1-4244-1708-7
DOI :
10.1109/ICCSC.2008.49
