Energy Efficiency Optimization for MIMO-OFDM Mobile Multimedia Communication Systems with QoS Constraints
Xiaohu Ge, Xi Huang, Yuming Wang, Min Chen, Qiang Li, Tao Han,, Cheng-Xiang Wang
TL;DR
This paper introduces an energy efficiency model and optimization algorithm for MIMO-OFDM mobile multimedia systems that satisfy QoS constraints, enhancing energy use without compromising service quality.
Contribution
It proposes a novel energy efficiency model and a closed-form solution for power allocation in MIMO-OFDM systems with QoS constraints, along with an optimized algorithm.
Findings
The EEOPA algorithm improves energy efficiency while maintaining QoS.
Simulation results confirm the effectiveness of the proposed method.
The model classifies subchannels using SVD for optimized power allocation.
Abstract
It is widely recognized that besides the quality of service (QoS), the energy efficiency is also a key parameter in designing and evaluating mobile multimedia communication systems, which has catalyzed great interest in recent literature. In this paper, an energy efficiency model is first proposed for multiple-input multiple-output orthogonal-frequency-division-multiplexing (MIMO-OFDM) mobile multimedia communication systems with statistical QoS constraints. Employing the channel matrix singular-value-decomposition (SVD) method, all subchannels are classified by their channel characteristics. Furthermore, the multi-channel joint optimization problem in conventional MIMO-OFDM communication systems is transformed into a multi-target single channel optimization problem by grouping all subchannels. Therefore, a closed-form solution of the energy efficiency optimization is derived for…
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