摘要
文章在考虑主用户占用子信道概率情况的基础上,建立了认知系统的多区域模型,文章提出了适应于主用户是否存在的干扰避免策略。在满足认知用户约束的条件下,基于最大化认知系统传输速率,提出了各子信道集合以及不同集合内功率分配的联合优化方法,且该方法复杂度较低。
In this paper, considering the subchannel occupancy probability of primary users, the authors found the multi-area model of cognitive system and propose the mixed interference avoidance principle of different situations. Based on the objective of maximizing the transmission rate of cognitive system, a low complexity method which jointly optimizes the sum power of different subchannel sets and the power inside each subchannel set is developed.
出处
《信息网络安全》
2012年第6期69-71,89,共4页
Netinfo Security
关键词
有限感知区域
混合保护
功率分配
机会频谱接入
limited sensing area
mixed protection
power allocation
opportunistic spectrum access
