Study of Coordinated Set of Coordinated Multi-Point Transmission with Limited Feedback

Jianxin DAI; Ming CHEN; Mei ZHAO; Ziyan JIA; Zhengquan LI

doi:10.1587/transcom.E97.B.171

Study of Coordinated Set of Coordinated Multi-Point Transmission with Limited Feedback

Jianxin DAI, Ming CHEN, Mei ZHAO, Ziyan JIA, Zhengquan LI

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In the Coordinated Multi-Point (CoMP) system under the condition of limited feedback, a reasonable coordinated set relies heavily on the splitting factor that is used to divide the total feedback bits into channel direction information (CDI) feedback bits and channel quality information (CQI) feedback bits. The relation of splitting factor and coordinated set is examined in this paper. After defining a penalty factor, we derive the net ergodic capacity optimization problem, whose variables to be optimized are the number of coordinated BSs, the divided area's radius and the splitting factor. According to an existing codebook and the quantized channel error model, the downlink received signal model is updated after adding the splitting factor. Through random matrix knowledge, the stochastic property of this model is obtained. A close approximate expression including the splitting factor to be optimized related to coordinated set is given. In addition, a revised adaptive feedback scheme is proposed to split the feedback bits. Simulation results show that the proposed scheme provides a significant performance gain, especially as the user velocity is high.

Publication: IEICE TRANSACTIONS on Communications Vol.E97-B No.1 pp.171-181

Publication Date: 2014/01/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E97.B.171

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

Authors

Jianxin DAI
  Nanjing University of Posts and Telecommunications,Southeast University
Ming CHEN
  Southeast University
Mei ZHAO
  Southeast University
Ziyan JIA
  Southeast University
Zhengquan LI
  Southeast University

Keyword

coordinated multi-point, net ergodic capacity, limited feedback, splitting factor, coordinated set

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Jianxin DAI, Ming CHEN, Mei ZHAO, Ziyan JIA, Zhengquan LI, "Study of Coordinated Set of Coordinated Multi-Point Transmission with Limited Feedback" in IEICE TRANSACTIONS on Communications, vol. E97-B, no. 1, pp. 171-181, January 2014, doi: 10.1587/transcom.E97.B.171.
Abstract: In the Coordinated Multi-Point (CoMP) system under the condition of limited feedback, a reasonable coordinated set relies heavily on the splitting factor that is used to divide the total feedback bits into channel direction information (CDI) feedback bits and channel quality information (CQI) feedback bits. The relation of splitting factor and coordinated set is examined in this paper. After defining a penalty factor, we derive the net ergodic capacity optimization problem, whose variables to be optimized are the number of coordinated BSs, the divided area's radius and the splitting factor. According to an existing codebook and the quantized channel error model, the downlink received signal model is updated after adding the splitting factor. Through random matrix knowledge, the stochastic property of this model is obtained. A close approximate expression including the splitting factor to be optimized related to coordinated set is given. In addition, a revised adaptive feedback scheme is proposed to split the feedback bits. Simulation results show that the proposed scheme provides a significant performance gain, especially as the user velocity is high.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E97.B.171/_p

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@ARTICLE{e97-b_1_171,
author={Jianxin DAI, Ming CHEN, Mei ZHAO, Ziyan JIA, Zhengquan LI, },
journal={IEICE TRANSACTIONS on Communications},
title={Study of Coordinated Set of Coordinated Multi-Point Transmission with Limited Feedback},
year={2014},
volume={E97-B},
number={1},
pages={171-181},
abstract={In the Coordinated Multi-Point (CoMP) system under the condition of limited feedback, a reasonable coordinated set relies heavily on the splitting factor that is used to divide the total feedback bits into channel direction information (CDI) feedback bits and channel quality information (CQI) feedback bits. The relation of splitting factor and coordinated set is examined in this paper. After defining a penalty factor, we derive the net ergodic capacity optimization problem, whose variables to be optimized are the number of coordinated BSs, the divided area's radius and the splitting factor. According to an existing codebook and the quantized channel error model, the downlink received signal model is updated after adding the splitting factor. Through random matrix knowledge, the stochastic property of this model is obtained. A close approximate expression including the splitting factor to be optimized related to coordinated set is given. In addition, a revised adaptive feedback scheme is proposed to split the feedback bits. Simulation results show that the proposed scheme provides a significant performance gain, especially as the user velocity is high.},
keywords={},
doi={10.1587/transcom.E97.B.171},
ISSN={1745-1345},
month={January},}

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TY - JOUR
TI - Study of Coordinated Set of Coordinated Multi-Point Transmission with Limited Feedback
T2 - IEICE TRANSACTIONS on Communications
SP - 171
EP - 181
AU - Jianxin DAI
AU - Ming CHEN
AU - Mei ZHAO
AU - Ziyan JIA
AU - Zhengquan LI
PY - 2014
DO - 10.1587/transcom.E97.B.171
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E97-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2014
AB - In the Coordinated Multi-Point (CoMP) system under the condition of limited feedback, a reasonable coordinated set relies heavily on the splitting factor that is used to divide the total feedback bits into channel direction information (CDI) feedback bits and channel quality information (CQI) feedback bits. The relation of splitting factor and coordinated set is examined in this paper. After defining a penalty factor, we derive the net ergodic capacity optimization problem, whose variables to be optimized are the number of coordinated BSs, the divided area's radius and the splitting factor. According to an existing codebook and the quantized channel error model, the downlink received signal model is updated after adding the splitting factor. Through random matrix knowledge, the stochastic property of this model is obtained. A close approximate expression including the splitting factor to be optimized related to coordinated set is given. In addition, a revised adaptive feedback scheme is proposed to split the feedback bits. Simulation results show that the proposed scheme provides a significant performance gain, especially as the user velocity is high.
ER -