Title :
Performance evaluation and analysis of space-time coding in unequalized multipath fading links
Author :
Gong, Yi ; Letaief, Khaled
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China
fDate :
11/1/2000 12:00:00 AM
Abstract :
This paper investigates the use of space-time (ST) coding for high-speed data transmission, as well as studies the effect of time delay spread on such scheme over unequalized fading channels. Using a random variable decomposition technique, we present an analytical model and obtain an approximate bound of the pairwise-error probability for ST coded systems over multipath and time-dispersive fading channels. It is shown that the presence of multipath does not reduce the diversity gain provided by the original design criteria, which is adopted to construct specific ST codes in quasi-static flat fading, but the coding gain diminishes due to the effect of multipath fading.
Keywords :
data communication; delays; dispersive channels; diversity reception; encoding; error statistics; fading channels; multipath channels; radio links; random processes; Monte Carlo simulations; analytical model; approximate analytical model; approximate bound; coding gain; diversity gain; high-speed data transmission; multipath fading channels; pairwise-error probability; performance analysis; performance evaluation; quasi-static flat fading; random variable decomposition; simulation results; space-time coding; time delay spread; time-dispersive fading channels; unequalized fading channels; unequalized multipath fading links; Analytical models; Data communication; Delay effects; Fading; Intersymbol interference; Performance analysis; Radiofrequency interference; Random variables; System performance; Wireless communication;
Journal_Title :
Communications, IEEE Transactions on
