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- W1522929723 abstract "In a multicarrier direct-sequence code-division multiple access (MC DS CDMA) system, different fading channels for different user and/or different carrier are correlated in general, thus a vector channel model is more appropriate than the disjoint scalar channel models For multiuser MC DS CDMA systems, we propose (1) a generalized vector autoregressive model which accounts for correlation between different user/carrier fading channels, (2) the use of a blind, two-phased algorithm to obtain the proposed model's parameters, and (3) a receiver structure that consists of a generalized decorrelator followed by a maximal-ratio combining (MRC) of uncorrelated carrier channel outputs of each user. The estimated fading coefficients provides the necessary quantities to MRC. The computer simulation results have shown that the proposed scheme has a close performance to the case when the channel is perfectly known, and outperforms separate scalar channel estimation case." @default.
- W1522929723 created "2016-06-24" @default.
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- W1522929723 date "2004-10-19" @default.
- W1522929723 modified "2023-09-26" @default.
- W1522929723 title "Vector channel estimation and multiuser detection for multicarrier DS CDMA in time and frequency selective fading channels" @default.
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- W1522929723 doi "https://doi.org/10.1109/wcnc.2004.1311511" @default.
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