IEICE TRANSACTIONS on Communications
RAKE-SOVA Equalization for Multi-Code CDMA System with Low Spreading Factor
Summary :
In CDMA system, the RAKE receiver is commonly used to attain diversity gain by taking advantage of the good correlation properties of the spreading codes. However, at low spreading gains the good correlation properties of the spreading codes are lost and the RAKE receiver performance is severely degraded by intersymbol interference (ISI) due to the interpath interference (IPI). In case of multi-code CDMA system, there are exist multi-code interference (MCI). In order to suppress ISI and MCI, a novel receiver based on soft-output viterbi algorithm (SOVA) equalization is proposed in this paper. The SOVA equalization is applied to symbol sequences after RAKE combining and MCI cancellation to effectively eliminate the ISI during transmission of high rate data in wideband DS-CDMA systems. Simulation results show that the proposed RAKE-SOVA receiver significantly outperform the traditional RAKE and RAKE-VA receivers.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E88-B No.5 pp.2087-2092
- Publication Date
- 2005/05/01
- Publicized
- Online ISSN
- DOI
- 10.1093/ietcom/e88-b.5.2087
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
Authors
Keyword
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Junhui ZHAO, Dongming WANG, Xiaohu YOU, Yun Hee KIM, "RAKE-SOVA Equalization for Multi-Code CDMA System with Low Spreading Factor" in IEICE TRANSACTIONS on Communications,
vol. E88-B, no. 5, pp. 2087-2092, May 2005, doi: 10.1093/ietcom/e88-b.5.2087.
Abstract: In CDMA system, the RAKE receiver is commonly used to attain diversity gain by taking advantage of the good correlation properties of the spreading codes. However, at low spreading gains the good correlation properties of the spreading codes are lost and the RAKE receiver performance is severely degraded by intersymbol interference (ISI) due to the interpath interference (IPI). In case of multi-code CDMA system, there are exist multi-code interference (MCI). In order to suppress ISI and MCI, a novel receiver based on soft-output viterbi algorithm (SOVA) equalization is proposed in this paper. The SOVA equalization is applied to symbol sequences after RAKE combining and MCI cancellation to effectively eliminate the ISI during transmission of high rate data in wideband DS-CDMA systems. Simulation results show that the proposed RAKE-SOVA receiver significantly outperform the traditional RAKE and RAKE-VA receivers.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e88-b.5.2087/_p
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@ARTICLE{e88-b_5_2087,
author={Junhui ZHAO, Dongming WANG, Xiaohu YOU, Yun Hee KIM, },
journal={IEICE TRANSACTIONS on Communications},
title={RAKE-SOVA Equalization for Multi-Code CDMA System with Low Spreading Factor},
year={2005},
volume={E88-B},
number={5},
pages={2087-2092},
abstract={In CDMA system, the RAKE receiver is commonly used to attain diversity gain by taking advantage of the good correlation properties of the spreading codes. However, at low spreading gains the good correlation properties of the spreading codes are lost and the RAKE receiver performance is severely degraded by intersymbol interference (ISI) due to the interpath interference (IPI). In case of multi-code CDMA system, there are exist multi-code interference (MCI). In order to suppress ISI and MCI, a novel receiver based on soft-output viterbi algorithm (SOVA) equalization is proposed in this paper. The SOVA equalization is applied to symbol sequences after RAKE combining and MCI cancellation to effectively eliminate the ISI during transmission of high rate data in wideband DS-CDMA systems. Simulation results show that the proposed RAKE-SOVA receiver significantly outperform the traditional RAKE and RAKE-VA receivers.},
keywords={},
doi={10.1093/ietcom/e88-b.5.2087},
ISSN={},
month={May},}
Copy
TY - JOUR
TI - RAKE-SOVA Equalization for Multi-Code CDMA System with Low Spreading Factor
T2 - IEICE TRANSACTIONS on Communications
SP - 2087
EP - 2092
AU - Junhui ZHAO
AU - Dongming WANG
AU - Xiaohu YOU
AU - Yun Hee KIM
PY - 2005
DO - 10.1093/ietcom/e88-b.5.2087
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E88-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2005
AB - In CDMA system, the RAKE receiver is commonly used to attain diversity gain by taking advantage of the good correlation properties of the spreading codes. However, at low spreading gains the good correlation properties of the spreading codes are lost and the RAKE receiver performance is severely degraded by intersymbol interference (ISI) due to the interpath interference (IPI). In case of multi-code CDMA system, there are exist multi-code interference (MCI). In order to suppress ISI and MCI, a novel receiver based on soft-output viterbi algorithm (SOVA) equalization is proposed in this paper. The SOVA equalization is applied to symbol sequences after RAKE combining and MCI cancellation to effectively eliminate the ISI during transmission of high rate data in wideband DS-CDMA systems. Simulation results show that the proposed RAKE-SOVA receiver significantly outperform the traditional RAKE and RAKE-VA receivers.
ER -
English
