Optimal cross-layer power allocation with channel and queue state information

CHEN Wei1; CAO Zhi-gang1; FAN Ping-yi1; LETAIEF K B2

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Optimal cross-layer power allocation with channel and queue state information

更新时间：2024-10-14

- Optimal cross-layer power allocation with channel and queue state information
- Issue 8, Pages: 16-23(2007)
- 作者机构：
  
  清华大学电子工程系 2. 香港科技大学电子与计算机工程系
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN925
- Published：2007
- 稿件说明：
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CHEN Wei1, CAO Zhi-gang1, FAN Ping-yi1, et al. Optimal cross-layer power allocation with channel and queue state information[J]. 2007, (8): 16-23.
DOI：

CHEN Wei1, CAO Zhi-gang1, FAN Ping-yi1, et al. Optimal cross-layer power allocation with channel and queue state information[J]. 2007, (8): 16-23. DOI：

摘要

研究基于完备信道和队列状态的最优功率分配策略。通过联合物理层和网络层的模型

建立了系统的跨层模型

进而在此基础上建立了功率分配的跨层优化问题。给出跨层最优功率分配问题的解析最优解和相应的算法

即"地窖注水"算法。说明传统的"注水策略"仅仅是所提出的地窖注水算法在不考虑队列长度下的一个特例。仿真将验证所提出策略相对于传统功率分配策略的性能优势。在同样的数据包到达率下

所提出的功率分配策略可以达到更小的排队时延。

Abstract

The optimal power allocation was investigated when both channel and queue state information was taken into account.By modeling the system from a cross-layer perspective

an optimization problem was formulated on power allo-cation where the maximal power requirement of a user was determined by the number of its backlog packets.The ana-lytical solution as well as its algorithm

which refer to as water filling in cellar（WFIC）

were proposed.The proposed WFIC can be reduced to traditional water-filling（TWF） method as a special case where queue state was ignored.Simula-tion results show that the proposed method can achieve lower queuing delay compared to conventional methods.

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