Title :
Frequency-domain speech scrambling/descrambling techniques implementation and evaluation on DSP
Author :
Ahmed, Jameel ; Ikram, Nassar
Author_Institution :
Pakistan Navy Eng. Coll. Karachi
Abstract :
Speech scrambling/descrambling has always been a key component in secure communication systems. The paper describes the real-time implementation of frequency-domain speech scrambling/descrambling techniques on Texas Instruments´ TMS320C6711 DSP. Three techniques, frequency-inversion, frequency hopping inversion and rolling code inversion, have been successfully implemented. Subsequently, the results of these techniques are evaluated and compared on the basis of their level of security
Keywords :
digital signal processing chips; frequency hop communication; speech coding; telecommunication security; DSP; Texas Instruments TMS320C6711; frequency hopping inversion; frequency-domain speech descrambling; frequency-domain speech scrambling; frequency-inversion; rolling code inversion; secure communication systems; Cryptography; Digital signal processing; Educational institutions; Filtering algorithms; Frequency; Instruments; Military communication; Security; Signal processing algorithms; Speech analysis;
Conference_Titel :
Multi Topic Conference, 2003. INMIC 2003. 7th International
Conference_Location :
Islamabad
Print_ISBN :
0-7803-8183-1
DOI :
10.1109/INMIC.2003.1416613
