Asymptotic Analysis of RZF Over Double Scattering Channels With MMSE Estimation
Type
ArticleKAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) DivisionElectrical Engineering
Electrical Engineering Program
Date
2019-03-19Permanent link to this record
http://hdl.handle.net/10754/655911
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Show full item recordAbstract
This paper studies the ergodic rate performance of regularized zero-forcing (RZF) precoding in the downlink of a multi-user multiple-input single-output (MISO) system, where the channel between the base station (BS) and each user is modeled by the double scattering model. This non-Gaussian channel model is a function of both the antenna correlation and the structure of scattering in the propagation environment. This paper makes the preliminary contribution of deriving the minimum-mean-square-error (MMSE) channel estimate for this model. Then under the assumption that the users are divided into groups of common correlation matrices, this paper derives deterministic approximations of the signal-to-interference-plus-noise ratio (SINR) and the ergodic rate, which are almost surely tight in the limit that the number of BS antennas, the number of users, and the number of scatterers in each group grow infinitely large. The derived results are expressed in a closed-form for the special case of multi-keyhole channels. The simulation results confirm the close match provided by the asymptotic analysis for moderate system dimensions. We show that the maximum number of users that can be supported simultaneously, while realizing large-scale MIMO gains, is equal to the number of scatterers.Citation
Nadeem, Q.-U.-A., Kammoun, A., Debbah, M., & Alouini, M.-S. (2019). Asymptotic Analysis of RZF Over Double Scattering Channels With MMSE Estimation. IEEE Transactions on Wireless Communications, 18(5), 2509–2526. doi:10.1109/twc.2019.2904495arXiv
1904.12197Additional Links
https://ieeexplore.ieee.org/document/8671514/https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8671514
http://arxiv.org/pdf/1904.12197
ae974a485f413a2113503eed53cd6c53
10.1109/TWC.2019.2904495