In this paper,a novel demodulation algorithm without constellation knowledge ( CK) for Amplitude-Phase Keying ( APK) signals is introduced,which is based on the minimum probability of symbol error ( MPSE) criterion,op...In this paper,a novel demodulation algorithm without constellation knowledge ( CK) for Amplitude-Phase Keying ( APK) signals is introduced,which is based on the minimum probability of symbol error ( MPSE) criterion,optimal in performance and suitable for non-cooperative communication. For reducing the complexity,an on-line algorithm is derived. Using preceding algorithms,asymptotic performance of the proposed algorithm is proved theoretically. Numerical simulations are also provided to validate the analytical results. Our study of asymptotic performance shows that the performance of demodulation for any APK signals without CK is identical with the APK optimal receiver with CK when the number of available data symbols goes to infinity.展开更多
The secure issues of APK are very important in Android applications.In order to solve potential secure problems and copyrights issues in redevelopment of APK files,in this paper we propose a new APK redevelopment mech...The secure issues of APK are very important in Android applications.In order to solve potential secure problems and copyrights issues in redevelopment of APK files,in this paper we propose a new APK redevelopment mechanism(APK-SAN).By exploring sanitizable signature technology,APK-SAN allows the original developer to authorize specified modifier who can redevelop the designated source code of APK files.Our scheme does not require interactions between the developer and modifiers.It can reduce the communication overhead and computational overhead for developers.Especially,the signature of redeveloped APK files is valid and maintains the copyrights.The proposed APK-SAN signature can effectively protect the security of the redeveloped APK files and copyrights of the developer and modifier.展开更多
基金Sponsored by the National Science Foundation of China(Grant No.61201237)the Nature Science Foundation of Heilongjiang Province of China(Grant No.QC2012C069)the Fundamental Research Funds for the Central Univesities(Grant No.HEUCFZ1129,HEUCF130810,HEUCF130817)
文摘In this paper,a novel demodulation algorithm without constellation knowledge ( CK) for Amplitude-Phase Keying ( APK) signals is introduced,which is based on the minimum probability of symbol error ( MPSE) criterion,optimal in performance and suitable for non-cooperative communication. For reducing the complexity,an on-line algorithm is derived. Using preceding algorithms,asymptotic performance of the proposed algorithm is proved theoretically. Numerical simulations are also provided to validate the analytical results. Our study of asymptotic performance shows that the performance of demodulation for any APK signals without CK is identical with the APK optimal receiver with CK when the number of available data symbols goes to infinity.
基金This work was supported by the National Natural Science Foundation of China(No.61662004,61772437,61702427)National Natural Science Foundation of Guangxi(No.2016GXNSFAA380215)+1 种基金Sichuan Youth Science and Technique Foundation(No.2017JQ0048)EU ICT COST CryptoAction(No.IC1306).
文摘The secure issues of APK are very important in Android applications.In order to solve potential secure problems and copyrights issues in redevelopment of APK files,in this paper we propose a new APK redevelopment mechanism(APK-SAN).By exploring sanitizable signature technology,APK-SAN allows the original developer to authorize specified modifier who can redevelop the designated source code of APK files.Our scheme does not require interactions between the developer and modifiers.It can reduce the communication overhead and computational overhead for developers.Especially,the signature of redeveloped APK files is valid and maintains the copyrights.The proposed APK-SAN signature can effectively protect the security of the redeveloped APK files and copyrights of the developer and modifier.
