期刊名称：International Journal of Advanced Computer Research
印刷版ISSN：2249-7277
电子版ISSN：2277-7970
出版年度：2011
卷号：2011
出版社：Association of Computer Communication Education for National Triumph (ACCENT)
摘要：Cogni tive Radi o (CR) o r soft ware defined radi o is a new concept for max imizing t he utiliza tion of the ra dio spectrum. The CR can sense the unu sed frequency spect rum at a ny ti me from the wide rang e of wireless rad io sp ectrum. This gives the efficient use of radi o resources. In cog nitive radio envi ronment , a p rimary l icensed user (PU ) can sha re spectrum ava ilabi lity informatio n with a seconda ry user, the second ary user will then b e ab le to access a vailable frequency sp ectrum. However, a secondary user sho uld always need to verify the authenticity of the spectrum occupa ncy info rma tion whether it co mes from the authentic p rima ry users. Wit hout the verification, a malici ous user can give false info rma tion about the sp ectrum o ccup ancy. This ca n result i nterference t o the primary users a nd minimize available spectrum fo r the second ary usag e. In thi s pa per, we have develop an efficient technique to veri fy t he so urce of the sp ectrum o ccup ancy info rma tion is to be from the authentic p rima ry user , by doing this we are maximizing the spectrum ut ilizat ion efficiency and minimizing any interference to the primary licensed users.
