A Scalable Limited Feedback Design for Network MIMO Using Per-Cell Product Codebook

Cheng, Yao; Lau, V.K.N.; Yi, Long

doi:10.1109/twc.2010.082110.091189

Cited by 53 publications

(50 citation statements)

References 24 publications

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“…Moreover, we leave the analysis on stochastic geometric approach under V-MIMO system, where it can represent the effectiveness of the proposed algorithms on more realistic environment. 1 The usage of codebook designs exploiting the channel statistics, such as [24,25], can improve the system performance in V-MIMO transmission.…”

Section: Discussionmentioning

confidence: 99%

Virtual-MIMO feedback and transmission for wireless ad hoc networks

Cho

Min

Huang

et al. 2016

J Wireless Com Network

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In a wireless ad hoc network, single-antenna nodes can cooperate in their transmissions to create a virtual multipleinput multiple-output (MIMO) channel for maximizing the spatial multiplexing gain. However, implementing virtual-MIMO transmission can result in overwhelming overhead, such as channel state information (CSI) feedback and local data exchange, as the number of cooperating nodes increases. To suppress this overhead, we apply the principle of virtual-MIMO transmission to CSI feedback and design a novel framework for supporting parallel feedback streams, called virtual-MIMO feedback. Building on this feedback framework, we optimize virtual-MIMO transmission techniques and quantify their throughput gains in the presence of CSI and local-exchange overhead. To be specific, the outage capacities of these virtual-MIMO techniques are analyzed, and the corresponding bandwidth allocation for local data exchange and long-range transmission is optimized in a way to maximize overall spectral efficiency. Finally, the improvement of spectral efficiency in proposed virtual-MIMO feedback and transmission is demonstrated by the simulation results.

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Section: Discussionmentioning

confidence: 99%

Virtual-MIMO feedback and transmission for wireless ad hoc networks

Cho

Min

Huang

et al. 2016

J Wireless Com Network

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“…5, the average sum rates of a 2×2 MIMO BC using different feedback rate sharing strategies. We consider five feedback rate sharing strategies [2,14], [4,12], [6,10], [8,8]…”

Section: A Numerical Examplesmentioning

confidence: 99%

“…A popular feedback architecture is a codebook approach where an index of a codeword in a predetermined codebook is fed back to the transmitter [7]. There have been many studies on the performance of codebook based multi-user MIMO systems using various transmission schemes such as zero-forcing (ZF) beamforming [8], block diagonalization (BD) [9], [10], and the unitary precoding [11].…”

Section: Introductionmentioning

confidence: 99%

Optimal Feedback Rate Sharing Strategy in Zero-Forcing MIMO Broadcast Channels

Lee¹,

Choi²

2013

IEEE Trans. Wireless Commun.

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In this paper, we consider a multiple-input multiple-output broadcast channel with limited feedback where all users share the feedback rates. Firstly, we find the optimal feedback rate sharing strategy using zero-forcing transmission scheme at the transmitter and random vector quantization at each user. We mathematically prove that equal sharing of sum feedback size among all users is the optimal strategy in the low signal-to-noise ratio (SNR) region, while allocating whole feedback size to a single user is the optimal strategy in the high SNR region. For the mid-SNR region, we propose a simple numerical method to find the optimal feedback rate sharing strategy based on our analysis and show that the equal allocation of sum feedback rate to a partial number of users is the optimal strategy. It is also shown that the proposed simple numerical method can be applicable to finding the optimal feedback rate sharing strategy when different path losses of the users are taken into account. We show that our proposed feedback rate sharing scheme can be extended to the system with stream control and is still useful for the systems with other techniques such as regularized zero-forcing and spherical cap codebook. Index Termsmultiple-input multiple-output (MIMO) broadcast channel, limited feedback, random vector quantization, feedback rate sharing Parts of this paper have been

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“…In addition, we select the per point PMIs independently. Joint per point PMI selection for JT transmission has been proposed in [32]. While joint per point PMI selection improves the performance of JT transmission compared to independent per point PMI selection, such a joint selection increases the selection complexity and moreover is suboptimal for DPS and fallback transmission.…”

Section: Csi Feedback In Compmentioning

confidence: 99%

System-level performance of LTE-Advanced with joint transmission and dynamic point selection schemes

Määttänen¹,

Hamalainen²,

Venäläinen

et al. 2012

EURASIP J. Adv. Signal Process.

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In this article, we present a practical coordinated multipoint (CoMP) system for LTE-Advanced. In this CoMP system, cooperation is enabled for cell-edge users via dynamic switching between the normal single-cell operation and CoMP. We first formulate a general CoMP system model of several CoMP schemes. We then investigate a practical finite-rate feedback design that simultaneously supports interference coordination, joint transmission (JT), and dynamic point selection (DPS) with a varying number of cooperating transmission points while operating a single-cell transmission as a fallback mode. We provide both link-level and system-level results for the evaluation of different feedback options for general CoMP operation. The results show that there are substantial performance gains in cell-edge throughputs for both JT and DPS CoMP over the baseline Release 10 LTE-Advanced with practical feedback options. We also show that CoMP can enable improved mobility management in real networks.

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A Scalable Limited Feedback Design for Network MIMO Using Per-Cell Product Codebook

Cited by 53 publications

References 24 publications

Virtual-MIMO feedback and transmission for wireless ad hoc networks

Virtual-MIMO feedback and transmission for wireless ad hoc networks

Optimal Feedback Rate Sharing Strategy in Zero-Forcing MIMO Broadcast Channels

System-level performance of LTE-Advanced with joint transmission and dynamic point selection schemes

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