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arXiv · 1507.07159

Optimal Power Allocation for LTE Users with Different Modulations

Ying Wang·Ahmed Abdelhadi
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Abstract

In this paper, we demonstrate the optimal power allocation for QPSK, 16-QAM, and 64-QAM modulation schedules and the role of channel quality indicator (CQI). We used sigmoidal-like utility functions to represent the probability of successful reception of packets at user equipment (UE). CQI as a feedback to the base station (BS) indicates the data rate that a downlink channel can support. With Levenberg-Marquardt (LM) Optimization method, we present utility functions of different CQI values for standardized 15 Modulation order and Coding Scheme (MCS) in $3^{rd}$ Generation Partnership Project (3GPP). Finally, we simulate and show the results of the optimal power allocation algorithm.

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Ying Wang, Ahmed Abdelhadi. 2015-07-26. Optimal Power Allocation for LTE Users with Different Modulations. https://arxiv.org/abs/1507.07159

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