Title :
Performance of Space-Time-Frequency Block-Coded MC-DS-CDMA in Correlated Conditions
Author :
Basilio, D.J. ; Mare, K.P. ; Maharaj, B.T.
Author_Institution :
Dept. of Electr. Electron. & Comput. Eng., Univ. of Pretoria, Pretoria
Abstract :
In this paper, we propose a downlink multi-antenna multi-carrier direct-sequence code division multiple access (MC-DS-CDMA) transmission scheme, incorporating space-time-frequency block (STFB) codes. The proposed scheme achieves time, frequency and spatial diversity using non-redundant algebraic constellation precoders. We simulate the proposed system´s bit-error-rate (BER) performance in a statistically accurate multiple-input multiple-output (MIMO) channel model, capable of simulating spatially-selective, frequency-selective and time-selective channel conditions. We evaluate the system´s performance when antenna correlation is introduced. Simulation results reveal that broadband MC-DS-CDMA using STFB codes, constitutes a promising downlink transmission scheme.
Keywords :
MIMO communication; block codes; code division multiple access; error statistics; space-time codes; spread spectrum communication; MC-DS-CDMA transmission scheme; MIMO channel; algebraic constellation precoder; antenna correlation; bit-error-rate; frequency-selective channel condition; multiantenna multicarrier direct-sequence code division multiple access; multiple-input multiple-output channel; space-time-frequency block-code; spatially-selective channel condition; time-selective channel condition; Bandwidth; Discrete Fourier transforms; Downlink; Frequency diversity; Interference suppression; MIMO; Multiaccess communication; Multicarrier code division multiple access; OFDM; Time domain analysis;
Conference_Titel :
Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE
Conference_Location :
Budapest
Print_ISBN :
978-1-4244-2947-9
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2009.4917903
