Subspace-Based Interference Suppression Technique for Long-Code Downlink CDMA Adaptive Receiver

Samphan PHROMPICHAI; Peerapol YUVAPOOSITANON; Phaophak SIRISUK

doi:10.1093/ietfec/e88-a.3.676

Subspace-Based Interference Suppression Technique for Long-Code Downlink CDMA Adaptive Receiver

Samphan PHROMPICHAI, Peerapol YUVAPOOSITANON, Phaophak SIRISUK

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This paper presents a multiple constrained subspace based multiuser detector for synchronous long-code downlink multirate DS-CDMA systems. The novel receiver adapts its fractionally-spaced equaliser tap-weights based upon two modes, namely training and decision-directed modes. Switching between two modes is achieved by changing the code constraint in the associated subspace algorithm. Moreover, detection of the desired user requires the knowledge of the desired user's spreading code only. Simulation results show that the proposed receiver is capable of multiple access interference (MAI) suppression and multipath mitigation. Besides, the results reveal the improvement in terms of convergence speed and mean square error (MSE) of the proposed receiver over the existing receiver in both static and dynamic environments.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E88-A No.3 pp.676-684

Publication Date: 2005/03/01

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DOI: 10.1093/ietfec/e88-a.3.676

Type of Manuscript: Special Section PAPER (Special Section on Adaptive Signal Processing and Its Applications)

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Samphan PHROMPICHAI, Peerapol YUVAPOOSITANON, Phaophak SIRISUK, "Subspace-Based Interference Suppression Technique for Long-Code Downlink CDMA Adaptive Receiver" in IEICE TRANSACTIONS on Fundamentals, vol. E88-A, no. 3, pp. 676-684, March 2005, doi: 10.1093/ietfec/e88-a.3.676.
Abstract: This paper presents a multiple constrained subspace based multiuser detector for synchronous long-code downlink multirate DS-CDMA systems. The novel receiver adapts its fractionally-spaced equaliser tap-weights based upon two modes, namely training and decision-directed modes. Switching between two modes is achieved by changing the code constraint in the associated subspace algorithm. Moreover, detection of the desired user requires the knowledge of the desired user's spreading code only. Simulation results show that the proposed receiver is capable of multiple access interference (MAI) suppression and multipath mitigation. Besides, the results reveal the improvement in terms of convergence speed and mean square error (MSE) of the proposed receiver over the existing receiver in both static and dynamic environments.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e88-a.3.676/_p

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@ARTICLE{e88-a_3_676,
author={Samphan PHROMPICHAI, Peerapol YUVAPOOSITANON, Phaophak SIRISUK, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Subspace-Based Interference Suppression Technique for Long-Code Downlink CDMA Adaptive Receiver},
year={2005},
volume={E88-A},
number={3},
pages={676-684},
abstract={This paper presents a multiple constrained subspace based multiuser detector for synchronous long-code downlink multirate DS-CDMA systems. The novel receiver adapts its fractionally-spaced equaliser tap-weights based upon two modes, namely training and decision-directed modes. Switching between two modes is achieved by changing the code constraint in the associated subspace algorithm. Moreover, detection of the desired user requires the knowledge of the desired user's spreading code only. Simulation results show that the proposed receiver is capable of multiple access interference (MAI) suppression and multipath mitigation. Besides, the results reveal the improvement in terms of convergence speed and mean square error (MSE) of the proposed receiver over the existing receiver in both static and dynamic environments.},
keywords={},
doi={10.1093/ietfec/e88-a.3.676},
ISSN={},
month={March},}

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TY - JOUR
TI - Subspace-Based Interference Suppression Technique for Long-Code Downlink CDMA Adaptive Receiver
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 676
EP - 684
AU - Samphan PHROMPICHAI
AU - Peerapol YUVAPOOSITANON
AU - Phaophak SIRISUK
PY - 2005
DO - 10.1093/ietfec/e88-a.3.676
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E88-A
IS - 3
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - March 2005
AB - This paper presents a multiple constrained subspace based multiuser detector for synchronous long-code downlink multirate DS-CDMA systems. The novel receiver adapts its fractionally-spaced equaliser tap-weights based upon two modes, namely training and decision-directed modes. Switching between two modes is achieved by changing the code constraint in the associated subspace algorithm. Moreover, detection of the desired user requires the knowledge of the desired user's spreading code only. Simulation results show that the proposed receiver is capable of multiple access interference (MAI) suppression and multipath mitigation. Besides, the results reveal the improvement in terms of convergence speed and mean square error (MSE) of the proposed receiver over the existing receiver in both static and dynamic environments.
ER -