TY - GEN
T1 - Joint transceiver optimization in MC-CDMA systems exploiting multipath and spatial diversity
AU - Kyoungnam, Seo
AU - Liuqing, Yang
PY - 2006
Y1 - 2006
N2 - Due to its robustness against channel frequency selectivity and the low-complexity implementation using fast Fourier transform (FFT) circuits, multi-carrier code division multiple access (MC-CDMA) systems are well suited for high data rate wireless multimedia services. However, the multiuser interference (MUI) emerges when the mutual orthogonality among users' codes is violated by the frequency-selective channel propagation, and in the presence of the so-termed near-far effects. In order to mitigate MUI, we present a joint algorithm which combines transmitter power control, receiver array processing and multiuser detection. The joint algorithm exploits both the multipath diversity and the spatial diversity, where the former is provided by the frequency selectivity and the latter is provided by appropriate spacing among the receiver antenna array elements. Simulations confirm the outstanding performance of the joint algorithm in MUI suppression. In addition, we observe that the algorithm provides the best performance when the propagation channel is frequency-selective and the channel fading is independent across different receiver antenna array elements.
AB - Due to its robustness against channel frequency selectivity and the low-complexity implementation using fast Fourier transform (FFT) circuits, multi-carrier code division multiple access (MC-CDMA) systems are well suited for high data rate wireless multimedia services. However, the multiuser interference (MUI) emerges when the mutual orthogonality among users' codes is violated by the frequency-selective channel propagation, and in the presence of the so-termed near-far effects. In order to mitigate MUI, we present a joint algorithm which combines transmitter power control, receiver array processing and multiuser detection. The joint algorithm exploits both the multipath diversity and the spatial diversity, where the former is provided by the frequency selectivity and the latter is provided by appropriate spacing among the receiver antenna array elements. Simulations confirm the outstanding performance of the joint algorithm in MUI suppression. In addition, we observe that the algorithm provides the best performance when the propagation channel is frequency-selective and the channel fading is independent across different receiver antenna array elements.
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U2 - 10.1109/GLOCOM.2006.595
DO - 10.1109/GLOCOM.2006.595
M3 - Conference contribution
AN - SCOPUS:50949104542
SN - 142440357X
SN - 9781424403578
T3 - GLOBECOM - IEEE Global Telecommunications Conference
BT - IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
T2 - IEEE GLOBECOM 2006 - 2006 Global Telecommunications Conference
Y2 - 27 November 2006 through 1 December 2006
ER -