Proceedings ArticleDOI
A PMI Feedback Scheme for Downlink Multi-User MIMO Based on Dual-Codebook of LTE-Advanced
Yongyu Dai,Shi Jin,Lei Jiang,Xiqi Gao,Ming Lei +4 more
- pp 1-5
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TLDR
Simulation results show that SSDC- based BCC has a comparable throughput performance with JSDC-based BCC but with a substantially reduced complexity and feedback overhead for 8Tx.Abstract:
In order to achieve a better tradeoff between overhead and performance, this paper proposes a separately selected dual-codebook (SSDC) based best companion cluster (BCC) approach. In this scheme, each UE selects its best and worst longterm precoding matrix indicators (PMI1), and feeds them back as the cluster indicators (CIs) for UE pairing. The final precoder W is determined by two precoders indicated by the best PMI1 and the short-term feedback PMI2. Besides, channel quality indicators (CQIs) are calculated for UE scheduling. To compare with SSDC-based BCC, we also discuss and propose a jointly selected dual-codebook (JSDC) based BCC scheme. Simulation results show that SSDC-based BCC has a comparable throughput performance with JSDC-based BCC but with a substantially reduced complexity and feedback overhead for 8Tx.read more
Citations
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Proceedings ArticleDOI
A limited feedback scheme for 3D multiuser MIMO based on Kronecker product codebook
TL;DR: Simulation shows that with properly clustered codewords, the proposed 3D MU-MIMO feedback scheme has a significant throughput gain against 2D MU/MIMo feedback scheme.
Journal ArticleDOI
LTE-Advanced Radio Access Enhancements: A Survey
TL;DR: An overview of the key radio access features and functionalities of the LTE-Advanced radio access network, supported by the simulation results is presented.
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Design of double codebook based on 3D dual-polarized channel for multiuser MIMO system
TL;DR: Simulation results demonstrate that the precoding method based on double codebook for the dual-polarized 3D MIMO system effectively improves system throughput compared with 2D transmission scheme.
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System‐Level Performance of Limited Feedback Schemes for Massive MIMO
TL;DR: This paper evaluates the performance of various CB‐based feedback schemes with different types of overhead reduction approaches, providing an experimental ground with which to optimize a CB‐ based MU‐MIMO feedback scheme while identifying the design constraints for a massive MIMO system.
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Clustered linear precoding for downlink network MIMO systems with partial CSI
TL;DR: A novel clustered linear precoding scheme applicable to network MIMO systems using only partial channel state information (CSI) to enhance the quality of service and the edge user throughput by using a small cluster size without the need of global optimization.
References
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Proceedings ArticleDOI
Multiuser diversity for MIMO wireless systems with linear receivers
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