摘要
研究基于有损Gilbert-Elliott信道的无线功率分配问题,旨在有限的传输时间内使得传输收益最大化。文中提供了4种功率分配方案:公平分配、置信信道1、置信信道2和保留方案,并使用部分可观测的马尔可夫决策过程(POMDP)对问题建模,得出了最优决策的两种空间结构形态,通过线性规划实验验证了该结论。同时,提出了在系统参数已知条件下最优策略结构的计算方法。
The problem of power allocation over two identical Gilbert-Elliott communication channels with penalty is studied, with the purpose to maximize the expected discounted number of bits transmitted over an infinite time span. Four possible strategies are chosen, including betting balanced, betting on channel 1, betting on channel 2 and betting conservatively. This problem is modeled as a partially observable Markov decision process, thus to derive two structure forms of the optimal policy. In addition, the analysis and conclusion is verified by a relevant linear program. And this paper also proposes the calculation method for optimal policy structure under the condition that the system parameters are known.
出处
《信息安全与通信保密》
2013年第1期40-42,45,共4页
Information Security and Communications Privacy
基金
国家自然科学基金资助项目(批准号:61071081)
关键词
无线通信
功率分配
马尔可夫链
wireless communication
power allocation
POMDP
