现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2015年
1期
26-29,34
,共5页
合作频谱感知%能量检测算法%线性加权算法%频谱空洞
閤作頻譜感知%能量檢測算法%線性加權算法%頻譜空洞
합작빈보감지%능량검측산법%선성가권산법%빈보공동
cooperative spectrum perception%energy detection algorithm%linear weighted algorithm%spectrum hole
频谱感知技术通过认知用户对周围频谱资源的检测发现频谱空洞，从而可以动态地接入该频段，提高了频谱资源的利用率。多节点合作频谱感知可以解决单节点检测时可能发生漏检的缺点，因此合作频谱感知技术得到了快速的发展。研究了合作频谱感知技术中的加权算法，对每个用户分配不同的权值，然后对线性加权算法做了仿真，并通过对算法的改进，得到最终的检测结果。
頻譜感知技術通過認知用戶對週圍頻譜資源的檢測髮現頻譜空洞，從而可以動態地接入該頻段，提高瞭頻譜資源的利用率。多節點閤作頻譜感知可以解決單節點檢測時可能髮生漏檢的缺點，因此閤作頻譜感知技術得到瞭快速的髮展。研究瞭閤作頻譜感知技術中的加權算法，對每箇用戶分配不同的權值，然後對線性加權算法做瞭倣真，併通過對算法的改進，得到最終的檢測結果。
빈보감지기술통과인지용호대주위빈보자원적검측발현빈보공동，종이가이동태지접입해빈단，제고료빈보자원적이용솔。다절점합작빈보감지가이해결단절점검측시가능발생루검적결점，인차합작빈보감지기술득도료쾌속적발전。연구료합작빈보감지기술중적가권산법，대매개용호분배불동적권치，연후대선성가권산법주료방진，병통과대산법적개진，득도최종적검측결과。
The spectrum holes can be found with the spectrum sensing technology according to the peripheral spectrum re?sources detected by the cognitive users,which can dynamically access the frequency band,and improve the utilization of the spectrum resource. Multi?node cooperative spectrum sensing can overcome the shortcomings that may occur when a single node is used for detection,so cooperative spectrum sensing technology has been developed rapidly. The weighted algorithm in the co?operative spectrum sensing technology is studied in this paper,in which different weight is distributed to each user,and then the simulation is carried out for the linear weighted algorithm. The final detected results were obtained on the basis of the im?provement of the algorithm.
