Iterative MMSE Precoding and Power Allocation in Cell-Free Massive MIMO Systems
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Date
2021-07Type
- Conference Paper
Abstract
In this work, we consider the downlink channel of a Cell-Free Massive multiple-input multiple-output (MIMO) system where both users and access points (APs) are equipped with a single-antenna. We propose iterative linear minimum mean-square error (MMSE) precoding along with optimal and uniform power allocation. We then derive achievable rate expressions for the proposed iterative MMSE precoder and power allocation approaches. Simulations show that the proposed iterative MMSE precoder and power allocation techniques outperform existing conjugate beamforming (CB), zero-forcing (ZF), and MMSE schemes in terms of achievable sum-rate and bit error rate (BER), in the presence of perfect and imperfect channel state information (CSI). Show more
Publication status
publishedExternal links
Book title
2021 IEEE Statistical Signal Processing Workshop (SSP)Pages / Article No.
Publisher
IEEEEvent
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