Study of total MSE in downlink multiuser MIMO systems with partial channel state information
Study of total MSE in downlink multiuser MIMO systems with partial channel state information
- Author(s): Haibo Zheng ; Jing Wang ; Shidong Zhou
- DOI: 10.1049/cp:20070300
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- Author(s): Haibo Zheng ; Jing Wang ; Shidong Zhou Source: IET Conference on Wireless, Mobile and Sensor Networks 2007 (CCWMSN07), 2007 p. 921 – 923
- Conference: IET Conference on Wireless, Mobile and Sensor Networks 2007 (CCWMSN07)
- DOI: 10.1049/cp:20070300
- ISBN: 978-0-8634-1836-5
- Location: Shanghai, China
- Conference date: 12-14 Dec. 2007
- Format: PDF
In this paper, we study the total mean-squared-error (MSE) of zero-forcing algorithm and regularized perturbation scheme with partial channel state information in downlink multiuser MIMO systems. Based on the study, we propose a random vector quantization (RVQ) codebook based TR-MMSE algorithm to reduce user channel state information feedback. Numerical results show that with the same feedback bits the proposed algorithm considerably outperforms the zero- forcing algorithm at all SNRs.
Inspec keywords: least mean squares methods; vector quantisation; MIMO communication; multiuser channels
Subjects: Radio links and equipment; Interpolation and function approximation (numerical analysis)
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