IEICE TRANSACTIONS on Communications
Design on Precoder in Cooperative Spatial Multiplexing Systems with Amplify-and-Forward Relaying
Summary :
Simple half-duplex repetition-based relaying protocols can achieve spatial diversity at the expense of additional relaying signals in the time domain. In this paper, a linear unitary precoder based on a singular vector for cooperative systems with the amplify-and-forward (AF) relaying protocol is proposed in order to improve spectral efficiency. An exact expression of the precoder design is first derived for the case of equal power allocation. Then, water-filling power allocation is used in conjunction with the precoder to further increase the system capacity, where the precoder matrix is generated with an iterative process. From the implementation point of view, the channel state information (CSI) has to be estimated and quantized in systems, the detail of which is described in the sequel. The adaptive modulation and coding (AMC) technique with the proposed precoder is also discussed to achieve high throughput performance. Finally, numerical and simulation results are presented to demonstrate the effectiveness of the proposed technique in improving capacity and throughput.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E94-B No.5 pp.1405-1415
- Publication Date
- 2011/05/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E94.B.1405
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
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Keyword
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Kan ZHENG, Hang LONG, Fangxiang WANG, Wenbo WANG, "Design on Precoder in Cooperative Spatial Multiplexing Systems with Amplify-and-Forward Relaying" in IEICE TRANSACTIONS on Communications,
vol. E94-B, no. 5, pp. 1405-1415, May 2011, doi: 10.1587/transcom.E94.B.1405.
Abstract: Simple half-duplex repetition-based relaying protocols can achieve spatial diversity at the expense of additional relaying signals in the time domain. In this paper, a linear unitary precoder based on a singular vector for cooperative systems with the amplify-and-forward (AF) relaying protocol is proposed in order to improve spectral efficiency. An exact expression of the precoder design is first derived for the case of equal power allocation. Then, water-filling power allocation is used in conjunction with the precoder to further increase the system capacity, where the precoder matrix is generated with an iterative process. From the implementation point of view, the channel state information (CSI) has to be estimated and quantized in systems, the detail of which is described in the sequel. The adaptive modulation and coding (AMC) technique with the proposed precoder is also discussed to achieve high throughput performance. Finally, numerical and simulation results are presented to demonstrate the effectiveness of the proposed technique in improving capacity and throughput.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.1405/_p
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@ARTICLE{e94-b_5_1405,
author={Kan ZHENG, Hang LONG, Fangxiang WANG, Wenbo WANG, },
journal={IEICE TRANSACTIONS on Communications},
title={Design on Precoder in Cooperative Spatial Multiplexing Systems with Amplify-and-Forward Relaying},
year={2011},
volume={E94-B},
number={5},
pages={1405-1415},
abstract={Simple half-duplex repetition-based relaying protocols can achieve spatial diversity at the expense of additional relaying signals in the time domain. In this paper, a linear unitary precoder based on a singular vector for cooperative systems with the amplify-and-forward (AF) relaying protocol is proposed in order to improve spectral efficiency. An exact expression of the precoder design is first derived for the case of equal power allocation. Then, water-filling power allocation is used in conjunction with the precoder to further increase the system capacity, where the precoder matrix is generated with an iterative process. From the implementation point of view, the channel state information (CSI) has to be estimated and quantized in systems, the detail of which is described in the sequel. The adaptive modulation and coding (AMC) technique with the proposed precoder is also discussed to achieve high throughput performance. Finally, numerical and simulation results are presented to demonstrate the effectiveness of the proposed technique in improving capacity and throughput.},
keywords={},
doi={10.1587/transcom.E94.B.1405},
ISSN={1745-1345},
month={May},}
Copy
TY - JOUR
TI - Design on Precoder in Cooperative Spatial Multiplexing Systems with Amplify-and-Forward Relaying
T2 - IEICE TRANSACTIONS on Communications
SP - 1405
EP - 1415
AU - Kan ZHENG
AU - Hang LONG
AU - Fangxiang WANG
AU - Wenbo WANG
PY - 2011
DO - 10.1587/transcom.E94.B.1405
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2011
AB - Simple half-duplex repetition-based relaying protocols can achieve spatial diversity at the expense of additional relaying signals in the time domain. In this paper, a linear unitary precoder based on a singular vector for cooperative systems with the amplify-and-forward (AF) relaying protocol is proposed in order to improve spectral efficiency. An exact expression of the precoder design is first derived for the case of equal power allocation. Then, water-filling power allocation is used in conjunction with the precoder to further increase the system capacity, where the precoder matrix is generated with an iterative process. From the implementation point of view, the channel state information (CSI) has to be estimated and quantized in systems, the detail of which is described in the sequel. The adaptive modulation and coding (AMC) technique with the proposed precoder is also discussed to achieve high throughput performance. Finally, numerical and simulation results are presented to demonstrate the effectiveness of the proposed technique in improving capacity and throughput.
ER -
English
