A Blind Interference-Blocking RAKE Receiver for CDMA Communications Systems

Tsui-Tsai LIN; Chih-Peng LI

doi:10.1093/ietcom/e88-b.5.2073

A Blind Interference-Blocking RAKE Receiver for CDMA Communications Systems

Tsui-Tsai LIN, Chih-Peng LI

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A space-time RAKE (ST-RAKE) receiver with a blind interference-blocking (IB) pre-processor, termed as the IB-RAKE receiver, is proposed for spread spectrum communications systems. The design of the proposed architecture consists of three components. A blind IB transformer is first constructed based on the received data, and then applied on the undespread data for the suppression of strong interference. After despreading, optimal beamforming is then performed on the IB despread data to extract the signals of interest (SOIs) from the desired user. Finally, a RAKE receiver with a maximum ratio combining technique is employed to constructively collect all the SOI energies. Since strong interference has been removed in the first stage, the RAKE receiver combines only those SOIs plus negligible interference, leading to robustness against strong interference. Numerical results have shown that substantial improvement can be obtained from the proposed ST-RAKE receiver with the blind IB pre-processing scheme.

Publication: IEICE TRANSACTIONS on Communications Vol.E88-B No.5 pp.2073-2080

Publication Date: 2005/05/01

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DOI: 10.1093/ietcom/e88-b.5.2073

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

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Tsui-Tsai LIN, Chih-Peng LI, "A Blind Interference-Blocking RAKE Receiver for CDMA Communications Systems" in IEICE TRANSACTIONS on Communications, vol. E88-B, no. 5, pp. 2073-2080, May 2005, doi: 10.1093/ietcom/e88-b.5.2073.
Abstract: A space-time RAKE (ST-RAKE) receiver with a blind interference-blocking (IB) pre-processor, termed as the IB-RAKE receiver, is proposed for spread spectrum communications systems. The design of the proposed architecture consists of three components. A blind IB transformer is first constructed based on the received data, and then applied on the undespread data for the suppression of strong interference. After despreading, optimal beamforming is then performed on the IB despread data to extract the signals of interest (SOIs) from the desired user. Finally, a RAKE receiver with a maximum ratio combining technique is employed to constructively collect all the SOI energies. Since strong interference has been removed in the first stage, the RAKE receiver combines only those SOIs plus negligible interference, leading to robustness against strong interference. Numerical results have shown that substantial improvement can be obtained from the proposed ST-RAKE receiver with the blind IB pre-processing scheme.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e88-b.5.2073/_p

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@ARTICLE{e88-b_5_2073,
author={Tsui-Tsai LIN, Chih-Peng LI, },
journal={IEICE TRANSACTIONS on Communications},
title={A Blind Interference-Blocking RAKE Receiver for CDMA Communications Systems},
year={2005},
volume={E88-B},
number={5},
pages={2073-2080},
abstract={A space-time RAKE (ST-RAKE) receiver with a blind interference-blocking (IB) pre-processor, termed as the IB-RAKE receiver, is proposed for spread spectrum communications systems. The design of the proposed architecture consists of three components. A blind IB transformer is first constructed based on the received data, and then applied on the undespread data for the suppression of strong interference. After despreading, optimal beamforming is then performed on the IB despread data to extract the signals of interest (SOIs) from the desired user. Finally, a RAKE receiver with a maximum ratio combining technique is employed to constructively collect all the SOI energies. Since strong interference has been removed in the first stage, the RAKE receiver combines only those SOIs plus negligible interference, leading to robustness against strong interference. Numerical results have shown that substantial improvement can be obtained from the proposed ST-RAKE receiver with the blind IB pre-processing scheme.},
keywords={},
doi={10.1093/ietcom/e88-b.5.2073},
ISSN={},
month={May},}

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TY - JOUR
TI - A Blind Interference-Blocking RAKE Receiver for CDMA Communications Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 2073
EP - 2080
AU - Tsui-Tsai LIN
AU - Chih-Peng LI
PY - 2005
DO - 10.1093/ietcom/e88-b.5.2073
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E88-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2005
AB - A space-time RAKE (ST-RAKE) receiver with a blind interference-blocking (IB) pre-processor, termed as the IB-RAKE receiver, is proposed for spread spectrum communications systems. The design of the proposed architecture consists of three components. A blind IB transformer is first constructed based on the received data, and then applied on the undespread data for the suppression of strong interference. After despreading, optimal beamforming is then performed on the IB despread data to extract the signals of interest (SOIs) from the desired user. Finally, a RAKE receiver with a maximum ratio combining technique is employed to constructively collect all the SOI energies. Since strong interference has been removed in the first stage, the RAKE receiver combines only those SOIs plus negligible interference, leading to robustness against strong interference. Numerical results have shown that substantial improvement can be obtained from the proposed ST-RAKE receiver with the blind IB pre-processing scheme.
ER -