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Robust Vector Perturbation Precoding Design for MIMO Broadcast Channel

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Liutong Du, Lihua Li, Ping Zhang

Signal Processing · Submitted 26 Jan 2019

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Simulation results show that, the robust VP precoder outperforms conventional VP precoding designs, as less sensitive to power scaling factor errors.

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arXiv ID1901.09199 (version 1)
Pith IDZV3YY3XK, Pith's permanent record of this paper and its review
CitationLihua Li, Liutong Du, Ping Zhang. "Robust Vector Perturbation Precoding Design for MIMO Broadcast Channel." arXiv:1901.09199 (2019). https://pith.science/paper/ZV3YY3XK
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What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.15 · human participants 0.01 · controlled comparison 0.85 · randomized assignment 0.01 · states quantitative result 0.06 · compares with prior results 0.96 · mentions code or data availability 0.02.

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We consider the vector perturbation (VP) precoder design for multiuser multiple-input single output (MU-MISO) broadcast channel systems which is robust to power scaling factor errors. VP precoding has so far been developed and analyzed under the assumption that receivers could have known the power scaling factor in advance of tranmission perfectly, which is hard to obtain due to the large dynamic range and limited feedforward. However, as demonstrated in our results the performance of VP precoding is quite sensitive to the accuracy of power scaling factor and always encounter an error floor at mid to high signal-to-noise ratio (SNR) regimes. Motivated by such observations, we propose a robust VP precoder based on the minimum mean square error (MMSE) criterion. Simulation results show that, the robust VP precoder outperforms conventional VP precoding designs, as less sensitive to power scaling factor errors.

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#sentencerolethe authors' own workstates the main conclusionstrength
s0 We consider the vector perturbation (VP) precoder design for multiuser multiple-input single output (MU-MISO) broadcast channel systems which is robust to power scaling factor errors. contribution 0.85 0.38 0.07 asserted 0.87
s1 VP precoding has so far been developed and analyzed under the assumption that receivers could have known the power scaling factor in advance of tranmission perfectly, which is hard to obtain due to the large dynamic range and limited feedforward. background 0.72 0.06 0.03 asserted 0.97
s2 However, as demonstrated in our results the performance of VP precoding is quite sensitive to the accuracy of power scaling factor and always encounter an error floor at mid to high signal-to-noise ratio (SNR) regimes. result 0.72 0.82 0.09 asserted 1.00
s3 Motivated by such observations, we propose a robust VP precoder based on the minimum mean square error (MMSE) criterion. contribution 0.88 0.80 0.13 asserted 0.99
s4 Simulation results show that, the robust VP precoder outperforms conventional VP precoding designs, as less sensitive to power scaling factor errors. result 0.99 0.94 0.86 asserted 1.00

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The paper
Original abstract

We consider the vector perturbation (VP) precoder design for multiuser multiple-input single output (MU-MISO) broadcast channel systems which is robust to power scaling factor errors. VP precoding has so far been developed and analyzed under the assumption that receivers could have known the power scaling factor in advance of tranmission perfectly, which is hard to obtain due to the large dynamic range and limited feedforward. However, as demonstrated in our results the performance of VP precoding is quite sensitive to the accuracy of power scaling factor and always encounter an error floor at mid to high signal-to-noise ratio (SNR) regimes. Motivated by such observations, we propose a robust VP precoder based on the minimum mean square error (MMSE) criterion. Simulation results show that, the robust VP precoder outperforms conventional VP precoding designs, as less sensitive to power scaling factor errors.

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