An Effective CDMA Multi-User Detection Scheme-Orthogonal Decision-Feedback Detection and Its Performance Analysis
Summary :
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 ortho-normal 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.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E80-B No.1 pp.145-155
- Publication Date
- 1997/01/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Category
- Mobile Communication
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Xiao Hua CHEN, Hak-Keong SIM, Pang Shyan KOOI, "An Effective CDMA Multi-User Detection Scheme-Orthogonal Decision-Feedback Detection and Its Performance Analysis" in IEICE TRANSACTIONS on Communications,
vol. E80-B, no. 1, pp. 145-155, January 1997, doi: .
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 ortho-normal 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.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e80-b_1_145/_p
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@ARTICLE{e80-b_1_145,
author={Xiao Hua CHEN, Hak-Keong SIM, Pang Shyan KOOI, },
journal={IEICE TRANSACTIONS on Communications},
title={An Effective CDMA Multi-User Detection Scheme-Orthogonal Decision-Feedback Detection and Its Performance Analysis},
year={1997},
volume={E80-B},
number={1},
pages={145-155},
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 ortho-normal 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.},
keywords={},
doi={},
ISSN={},
month={January},}
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TY - JOUR
TI - An Effective CDMA Multi-User Detection Scheme-Orthogonal Decision-Feedback Detection and Its Performance Analysis
T2 - IEICE TRANSACTIONS on Communications
SP - 145
EP - 155
AU - Xiao Hua CHEN
AU - Hak-Keong SIM
AU - Pang Shyan KOOI
PY - 1997
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E80-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 1997
AB - 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 ortho-normal 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.
ER -
English
