An Improved Multicell MMSE Channel Estimation in a Massive MIMO System
Joint Authors
Li, Ke
Song, Xiaoqin
Ahmad, M. Omair
Swamy, M. N. S.
Source
International Journal of Antennas and Propagation
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-05-08
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Massive MIMO is a promising technology to improve both the spectrum efficiency and the energy efficiency.
The key problem that impacts the throughput of a massive MIMO system is the pilot contamination due to the nonorthogonality of the pilot sequences in different cells.
Conventional channel estimation schemes cannot mitigate this problem effectively, and the computational complexity is increasingly becoming larger in views of the large number of antennas employed in a massive MIMO system.
Furthermore, the channel estimation is always carried out with some ideal assumptions such as the complete knowledge of large-scale fading.
In this paper, a new channel estimation scheme is proposed by utilizing interference cancellation and joint processing.
Highly interfering users in neighboring cells are identified based on the estimation of large-scale fading and then included in the joint channel processing; this achieves a compromise between the effectiveness and efficiency of the channel estimation at a reasonable computational cost, and leads to an improvement in the overall system performance.
Simulation results are provided to demonstrate the effectiveness of the proposed scheme.
American Psychological Association (APA)
Li, Ke& Song, Xiaoqin& Ahmad, M. Omair& Swamy, M. N. S.. 2014. An Improved Multicell MMSE Channel Estimation in a Massive MIMO System. International Journal of Antennas and Propagation،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1036061
Modern Language Association (MLA)
Li, Ke…[et al.]. An Improved Multicell MMSE Channel Estimation in a Massive MIMO System. International Journal of Antennas and Propagation No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-1036061
American Medical Association (AMA)
Li, Ke& Song, Xiaoqin& Ahmad, M. Omair& Swamy, M. N. S.. An Improved Multicell MMSE Channel Estimation in a Massive MIMO System. International Journal of Antennas and Propagation. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1036061
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1036061