Performance degradation of analog FM system due to spread spectrum overlay

Vouyioukas, DD; Constantinou, P

dc.contributor.author	Vouyioukas, DD	en
dc.contributor.author	Constantinou, P	en
dc.date.accessioned	2014-03-01T01:19:25Z
dc.date.available	2014-03-01T01:19:25Z
dc.date.issued	2003	en
dc.identifier.issn	0018-9316	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15476
dc.subject	AF SNR degradation	en
dc.subject	Analog FM	en
dc.subject	Interference	en
dc.subject	Objective and subjective measurements	en
dc.subject	Spread spectrum	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Telecommunications	en
dc.subject.other	Audio frequency amplifiers	en
dc.subject.other	Bandpass filters	en
dc.subject.other	Compact disks	en
dc.subject.other	Signal to noise ratio	en
dc.subject.other	Spread spectrum	en
dc.subject.other	Stereophonic broadcasting	en
dc.title	Performance degradation of analog FM system due to spread spectrum overlay	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/TBC.2003.810073	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TBC.2003.810073	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	The investigation of spectrum overlay of a Spread Spectrum system on the existing narrowband FM broadcasting system(1) is presented. The overlaid Spread Spectrum (SS) system is assumed to utilize direct sequence (DS) spreading, using maximal length pseudorandom sequences. We studied the performance degradation of the analog FM system due to the interference produced by the SS signal, through laboratory subjective and objective measurements, for various types of spreading scenarios and for different carrier frequency differences (Deltaf). The RF protection ratios for the FM receivers are derived, along with SINAD measurements. Finally, these experimental results have been compared with the theoretical study of the FM receiver's audio frequency SNR output due to SS interference.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Broadcasting	en
dc.identifier.doi	10.1109/TBC.2003.810073	en
dc.identifier.isi	ISI:000183825200001	en
dc.identifier.volume	49	en
dc.identifier.issue	2	en
dc.identifier.spage	113	en
dc.identifier.epage	123	en