TY - GEN
T1 - Spectral-efficiency of TDD multiuser two-hop MC-CDMA systems employing egocentric-altruistic relay optimization
AU - Liu, Tingting
AU - Yang, Lie Liang
AU - Yang, Chenyang
PY - 2010
Y1 - 2010
N2 - In this contribution we investigate the spectral-efficiency of a two-hop cooperative network using multicarrier code-division multipleaccess (MC-CDMA) transmission scheme. The two-hop network constitutes K source users transmitting signals to K destinations with the aid of N relays. Our focus is on the relay optimization, when assuming that the N relays cooperate or do not cooperate with each other. Specifically, in this contribution the egocentric-altruistic (E-A) optimization is introduced, which constitutes an E-optimization motivating to suppress the multiuser interference (MUI) of the source-relay channels and an A-optimization aiming to pre-mitigate the potential MUI of the relay-destination channels. Both the minimum mean-square error (MMSE) and zero-forcing (ZF) optimization criteria are considered. Furthermore, the spectral-efficiency performance of the two-hop MC-CDMA systems using the proposed E-A relay optimization is investigated by simulations, when assuming communications over frequency-selective fading channels.
AB - In this contribution we investigate the spectral-efficiency of a two-hop cooperative network using multicarrier code-division multipleaccess (MC-CDMA) transmission scheme. The two-hop network constitutes K source users transmitting signals to K destinations with the aid of N relays. Our focus is on the relay optimization, when assuming that the N relays cooperate or do not cooperate with each other. Specifically, in this contribution the egocentric-altruistic (E-A) optimization is introduced, which constitutes an E-optimization motivating to suppress the multiuser interference (MUI) of the source-relay channels and an A-optimization aiming to pre-mitigate the potential MUI of the relay-destination channels. Both the minimum mean-square error (MMSE) and zero-forcing (ZF) optimization criteria are considered. Furthermore, the spectral-efficiency performance of the two-hop MC-CDMA systems using the proposed E-A relay optimization is investigated by simulations, when assuming communications over frequency-selective fading channels.
UR - https://www.scopus.com/pages/publications/77954930766
U2 - 10.1109/VETECS.2010.5494015
DO - 10.1109/VETECS.2010.5494015
M3 - 会议稿件
AN - SCOPUS:77954930766
SN - 9781424425198
T3 - IEEE Vehicular Technology Conference
BT - 2010 IEEE 71st Vehicular Technology
T2 - 2010 IEEE 71st Vehicular Technology Conference, VTC 2010-Spring
Y2 - 16 May 2010 through 19 May 2010
ER -