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## Limited Channel Feedback for Coordinated Beamforming under SINR Requirements

### Citations

7412 | Convex Optimization
- Boyd, Vandenberghe
- 2004
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Citation Context ...l numbers to avoid integer programming. This problem is the convex optimization problem, and after some calculation, we can get the following closed-form solution for the optimal Bji, denoted as B̂ji =-=[16]-=-: B̂ji = ( Bi K − 1 + (M−1) (log2(gji)− log2 gi) )+ , (6) where (x)+ = max(0, x) and gi = (∏K k =i gki ) 1 K−1 is the geometric mean of the interference channel gains at the ith432 user. As expected,... |

595 |
for Local and metropolitan area networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems
- IEEE
- 2004
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Citation Context ...s are as follows: K = 3, M = 4, and the pathloss between each BS and the users are given by 10 log10 a2ji = 128.1+37.6 log10(Dji/1, 000), where Dji is the distance between the jth BS and the ith user =-=[17]-=-. The cell radius is 500m, and four cases with different user locations and target SINR values are considered (Table I). For each case, Dii is fixed but the angle between the ith user and its BS is un... |

120 | Coordinated beamforming for the multicell multi-antenna wireless system.
- Dahrouj, Yu
- 2010
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Citation Context ...as multicell joint processing (JP). On the other hand, in partial BS cooperation, known as coordinated beamforming (CB), the BSs exchange only user CSI and design their respective beamforming vectors =-=[4]-=-,[5]. The performance of CoMP depends on the quality of CSI at the BSs. In frequency division duplex (FDD) systems, where users estimate CSI and feedback to BSs via wireless links, limited channel fee... |

119 | Multi-antenna downlink channels with limited feedback and user selection
- Yoo, Jindal, et al.
- 2007
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Citation Context ...es intercell interference leakage. When each user employs the random vector quantization (RVQ), an upper bound of the interference leakage from the jth BS to the ith user, denoted as Iji, is given by =-=[14]-=- |hHjivj |2 < gji2−Bji/(M−1) Iji, (2) and the sum of {Iji} at the ith user is Ii ∑K j=1,j =i Iji. The design problem for determining {Bji} is formulated as the minimization of the total transmiss... |

51 | Network MIMO with linear zeroforcing beamforming: Large system analysis, impact of channel estimation, and reduced-complexity scheduling
- Huh, Tulino, et al.
- 2012
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Citation Context ... BSs fully cooperate by sharing both user channel state information (CSI) and data, powerful MIMO techniques such as dirty paper coding and multicell linear preprocessing can be designed for CoMP [2],=-=[3]-=-. This type of CoMP is referred to as multicell joint processing (JP). On the other hand, in partial BS cooperation, known as coordinated beamforming (CB), the BSs exchange only user CSI and design th... |

45 |
Coordinated multipoint transmission and reception in LTEAdvanced systems,”
- Lee
- 2012
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Citation Context ...multi-point transmission (CoMP), also called network multi-input multi-output (MIMO), has been recognized as an effective technique for increasing the sum rate and reducing outages in celluar systems =-=[1]-=-. CoMP is realized by a group of based stations (BSs) that cooperate to form a virtual antenna array distributed over multiple cells. When BSs fully cooperate by sharing both user channel state inform... |

29 | Adaptive spatial intercell interference cancellation in multicell wireless networks
- Zhang, Andrews
- 2010
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Citation Context ...ulticell joint processing (JP). On the other hand, in partial BS cooperation, known as coordinated beamforming (CB), the BSs exchange only user CSI and design their respective beamforming vectors [4],=-=[5]-=-. The performance of CoMP depends on the quality of CSI at the BSs. In frequency division duplex (FDD) systems, where users estimate CSI and feedback to BSs via wireless links, limited channel feedbac... |

21 |
Efficient selective feedback design for multicell cooperative networks,”
- Papadogiannis, Bang, et al.
- 2011
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Citation Context ...uced in [6]-[8]. They include a channel selection algorithm maximizing the average signal to interference noise ratio (SINR) [6], schemes for reducing both CSI feedback overhead and backhaul overhead =-=[7]-=-, and algorithms that jointly optimize the channel selection and bit allocation to This work was supported by the Defense Acquisition Program Administration (DAPA) and the Agency for Defense Developme... |

15 |
Adaptive bit partitioning for multicell intercell interference nulling with delayed limited feedback
- Bhagavatula, Jr
- 2011
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Citation Context ...ack [8]. In addition, for multicell JP, a bit allocation scheme maximizing the quantization accuracy for limited CSI feedback has been developed [9]. CSI feedback for CB has been investigated in [5], =-=[10]-=--[12]. The impact of CSI quantization error on the average achievable rate is analyzed [5], and a bit allocation method is developed to reduce the mean-loss in achievable rate caused by delayed limite... |

15 | Bit allocation laws for multiantenna channel feedback quantization: Multiuser case
- Khoshnevis, Yu
- 2012
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Citation Context ... scheme determines the required total feedback rate and considers bit allocation for the users as well as their channels. In particular, motivated by the bit allocation scheme for single-cell MU-MIMO =-=[13]-=-, we formulate an optimization problem minimizing the total transmission power subject to the target SINR constraints and derive a suboptimal solution to the problem. Closed-form expressions for the t... |

6 | Two-stage channel feedback for beamforming and scheduling in network MIMO systems
- Khoshnevis, Yu
- 2012
(Show Context)
Citation Context ...8]. In addition, for multicell JP, a bit allocation scheme maximizing the quantization accuracy for limited CSI feedback has been developed [9]. CSI feedback for CB has been investigated in [5], [10]-=-=[12]-=-. The impact of CSI quantization error on the average achievable rate is analyzed [5], and a bit allocation method is developed to reduce the mean-loss in achievable rate caused by delayed limited fee... |

3 | Distributed adaptation of quantized feedback for downlink network MIMO systems
- Zhou, Gong, et al.
- 2011
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Citation Context ...CoMP FDD systems have been proposed recently. For multicell JP, selective CSI feedback methods, which permit only those users with high quality channels to feedback their CSI, have been introduced in =-=[6]-=--[8]. They include a channel selection algorithm maximizing the average signal to interference noise ratio (SINR) [6], schemes for reducing both CSI feedback overhead and backhaul overhead [7], and al... |

2 |
Novel feedback bit allocation methods for multi-cell joint processing systems
- Yu, Kong, et al.
- 2012
(Show Context)
Citation Context ...he mean-loss in achievable rate caused by limited feedback [8]. In addition, for multicell JP, a bit allocation scheme maximizing the quantization accuracy for limited CSI feedback has been developed =-=[9]-=-. CSI feedback for CB has been investigated in [5], [10]-[12]. The impact of CSI quantization error on the average achievable rate is analyzed [5], and a bit allocation method is developed to reduce t... |

2 | Stochastic control of eventdriven feedback in multiantenna interference channels
- Huang, Lau, et al.
- 2011
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Citation Context ... the mean-loss in achievable rate caused by delayed limited feedback [10]. While these results have been derived for independent block fading channels, where CSI varies independently with time-slots, =-=[11]-=- assumes channel correlation among time-slots and proposes an optimal feedback-control policy that turns CSI feedback on/off according to channel gain and quantization error. A two stage feedback meth... |

1 |
Network coordination for spectrally effcient communications in cellular systems
- Karakayali, Foschini, et al.
- 2006
(Show Context)
Citation Context ...When BSs fully cooperate by sharing both user channel state information (CSI) and data, powerful MIMO techniques such as dirty paper coding and multicell linear preprocessing can be designed for CoMP =-=[2]-=-,[3]. This type of CoMP is referred to as multicell joint processing (JP). On the other hand, in partial BS cooperation, known as coordinated beamforming (CB), the BSs exchange only user CSI and desig... |

1 |
Channel feedback optimization for network MIMO systems
- Kim, Shin, et al.
- 2012
(Show Context)
Citation Context ... FDD systems have been proposed recently. For multicell JP, selective CSI feedback methods, which permit only those users with high quality channels to feedback their CSI, have been introduced in [6]-=-=[8]-=-. They include a channel selection algorithm maximizing the average signal to interference noise ratio (SINR) [6], schemes for reducing both CSI feedback overhead and backhaul overhead [7], and algori... |

1 | Two-phase multiuser scheduling for multiantenna downlinks exploiting reducded finite-rate feedback - Xu, Zhao - 2010 |