Title :
Widely Linear Minimum Variance Channel Estimation for MC-CDMA Systems Using Real Modulation
Author :
Abdallah, Saeed ; Psaromiligkos, Ioannis N.
Author_Institution :
McGill Univ., Montreal
Abstract :
We propose a novel widely linear (WL) minimum variance (MV) channel estimation algorithm for multicarrier code-division multiple access (MC-CDMA) systems. The presented algorithm outperforms the regular MV channel estimation algorithms when the modulation scheme is real-valued (such as BPSK). We build on the results of [1] to find a highly accurate closed form expression the asymptotic bias resulting from the additive noise. We show via simulations that the asymptotic bias and the MSE are significantly reduced when widely linear MV estimation is utilized.
Keywords :
channel estimation; code division multiple access; matrix algebra; multiuser detection; phase shift keying; BPSK modulation; MC-CDMA systems; WL MV channel estimation algorithm; multicarrier code-division multiple access systems; multiuser detection; widely linear minimum variance channel estimation; Additive noise; Binary phase shift keying; Channel estimation; Covariance matrix; Finite impulse response filter; Modulation coding; Multicarrier code division multiple access; Nonlinear filters; Signal processing; Transmitters;
Conference_Titel :
Electrical and Computer Engineering, 2007. CCECE 2007. Canadian Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-1020-7
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2007.194