CAJ | 학술논문

在授权多小区频谱资源复用场景下，基于分级信道接入模型提出了一种认知 Ad Hoc 网络资源分配方案。授权小区将频谱资源进行区间复用，认知系统根据区域复用的不同划分可用频段，并在不同频段采取不同的接入方式；联合考虑链路传输需求及授权用户干扰保障设计传输效益因子，根据传输效益因子分配可用信道，运用拉格朗日对偶理论实现功率分配，并基于令牌环结构实现 Ad Hoc 链路局部信息交互。仿真表明，所提算法相对非复用认知场景系统容量可在相同指标下提升2％。
재수권다소구빈보자원복용장경하，기우분급신도접입모형제출료일충인지 Ad Hoc 망락자원분배방안。수권소구장빈보자원진행구간복용，인지계통근거구역복용적불동화분가용빈단，병재불동빈단채취불동적접입방식；연합고필련로전수수구급수권용호간우보장설계전수효익인자，근거전수효익인자분배가용신도，운용랍격랑일대우이론실현공솔분배，병기우령패배결구실현 Ad Hoc 련로국부신식교호。방진표명，소제산법상대비복용인지장경계통용량가재상동지표하제승2％。
A resource allocation scheme for the cognitive radio Ad-Hoc network , which is collocated with the multi-cell primary radio network , is proposed based on the hierarchical channel access model . In this case , different primary cells can utilize some parts of the whole spectrums in terms of the reuse factor . Available bands are divided by the secondary system in line with the reused area and different access modes are developed according to the spectrum division . The proposed transmission profit parameter combining the transmission requirement with the interference constraint is used for channel allocation and the secondary system uses the Lagrange duality theory to implement power allocation . The Token Ring is introduced to realize local information exchange for the Ad-Hoc link . Simulation results show that , with the same performance metrics , the proposed algorithm can achieve 20% improvement on the overall throughput compared to the non-reuse-based cognitive scenario .