Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/61795
Title: An effective CDMA multi-user detection schemeorthogonal decision-feedback detection and its performance analysis
Authors: Chen, X.H. 
Sim, H.K.
Kooi, P.S. 
Keywords: CDMA
Decision-feedback
Multi-user detection
Issue Date: 1997
Source: Chen, X.H.,Sim, H.K.,Kooi, P.S. (1997). An effective CDMA multi-user detection schemeorthogonal decision-feedback detection and its performance analysis. IEICE Transactions on Communications E80-B (1) : 145-155. ScholarBank@NUS Repository.
Abstract: A novel CDMA multi-user detection scheme orthogonal decision-feedback detector (ODFD) is proposed for a synchronous CDMA system in this paper. It is robust for its near-far resistance and high multi-user detection efficiency with a performance similar to that of decorrelating decision-feedback detector (DDFD) but with a reduced complexity. The ODFD scheme employs a match-filter bank that matches a set of orthonormal sequences. The ortho-normal sequences are generated by the Gram-Schmidt orthogonalisation procedure based on the spreading codes. The ODFD algorithm involves only with the ortho-normal coefficient-matrix which requires no frequent recalculations even when system parameters change. Successive decision-feedback detection is carried out immediately at the output of the ODFD match-filter bank without matrix inversion operations resulting in a much simplified structure.
Source Title: IEICE Transactions on Communications
URI: http://scholarbank.nus.edu.sg/handle/10635/61795
ISSN: 09168516
Appears in Collections:Staff Publications

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