Optimal Power Allocation for LTE Users with Different Modulations
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.
- Publication:
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arXiv e-prints
- Pub Date:
- July 2015
- DOI:
- 10.48550/arXiv.1507.07159
- arXiv:
- arXiv:1507.07159
- Bibcode:
- 2015arXiv150707159W
- Keywords:
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- Computer Science - Networking and Internet Architecture
- E-Print:
- 5 pages and 7 figures