As a group of nonspecific inflammatory diseases affecting the intestine,inflammatory bowel disease(IBD)exhibits the characteristics of chronic recurring inflammation,and was proven to be increasing in incidence(Kaplan...As a group of nonspecific inflammatory diseases affecting the intestine,inflammatory bowel disease(IBD)exhibits the characteristics of chronic recurring inflammation,and was proven to be increasing in incidence(Kaplan,2015).IBD induced by genetic background,environmental changes,immune functions,microbial composition,and toxin exposures(Sasson et al.,2021)primarily includes ulcerative colitis(UC)and Crohn's disease(CD)with complicated clinical symptoms featured by abdominal pain,diarrhea,and even blood in stools(Fan et al.,2021;Huang et al.,2021).展开更多
An interference alignment(IA)spectrum sharing method based on Rayleigh quotient is proposed for distributed multi-user multi-antenna cognitive radio(CR) networks.The interference from cognitive users(CUs)to the primar...An interference alignment(IA)spectrum sharing method based on Rayleigh quotient is proposed for distributed multi-user multi-antenna cognitive radio(CR) networks.The interference from cognitive users(CUs)to the primary(PR) system is constrained through the Rayleigh quotients of channel matrices to deal with the absence of PR users(PUs) in the IA process.As a result,the IA scheme can be applied in CR networks without harmful interference to PUs.Compared with existing IA based spectrum sharing methods,the proposed method is more general because of breaking the restriction that CUs can only transmit on the idle sub-channels of the PR system.Moreover,in comparison to other four spectrum sharing methods applicable in general scene,the proposed method leads to improved performance of achievable sum rate of the CR system as well as guarantees the transmission of PUs.展开更多
基金supported by the Zhenjiang Key Research and Development Plan(Social Development)(No.SH2021066)the Clinical Medical Science and Technology Development Fund Project of Jiangsu University in 2018(No.JLY20180031)the Taicang Science and Technology Planning Project(No.TC2020JCYL17),China。
文摘As a group of nonspecific inflammatory diseases affecting the intestine,inflammatory bowel disease(IBD)exhibits the characteristics of chronic recurring inflammation,and was proven to be increasing in incidence(Kaplan,2015).IBD induced by genetic background,environmental changes,immune functions,microbial composition,and toxin exposures(Sasson et al.,2021)primarily includes ulcerative colitis(UC)and Crohn's disease(CD)with complicated clinical symptoms featured by abdominal pain,diarrhea,and even blood in stools(Fan et al.,2021;Huang et al.,2021).
基金supported by National Natural Science Foundation of China under Grant 6120123361271262Fundamental Research Funds for the Central Universities (2013G1241114)
文摘An interference alignment(IA)spectrum sharing method based on Rayleigh quotient is proposed for distributed multi-user multi-antenna cognitive radio(CR) networks.The interference from cognitive users(CUs)to the primary(PR) system is constrained through the Rayleigh quotients of channel matrices to deal with the absence of PR users(PUs) in the IA process.As a result,the IA scheme can be applied in CR networks without harmful interference to PUs.Compared with existing IA based spectrum sharing methods,the proposed method is more general because of breaking the restriction that CUs can only transmit on the idle sub-channels of the PR system.Moreover,in comparison to other four spectrum sharing methods applicable in general scene,the proposed method leads to improved performance of achievable sum rate of the CR system as well as guarantees the transmission of PUs.
