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|Title:||An effective CDMA multi-user detection schemeorthogonal decision-feedback detection and its performance analysis|
|Authors:||Chen, X.H. |
|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|
|Appears in Collections:||Staff Publications|
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