Question

Amplitude modulation: double side band supressed carrier (DSB-SC)

why is DSB-SC used for radio signals? which frequency components would carry useful information and which ones would cause unnecessary interference?

Answer 1

To ove vcome tha drawback of pouty westoge in Att-nve Ds g Fc) an ose-Sc me thood is uaed 峯Dse-se esb.method of trans mission tshere onl te tuo sud e banda au tran mitted without the carrier esuppre " cng conies) 步psa-sc is a method na the conventions nMuwave in which the carrier the tuo s ude bundls au OR DSB-SC modualatian. firnplila, de nodulationis one of tw eaYuut adio wodulah on techniques. The reaivers e uea to listen to AM-osa-sc ae perphapi thu plest ecaivers of ony vodco modu lation jeeniayuej which meny be ay the end ot thi's modais, you wiu knoua Receiven weve buit emtrely from scner elctronic uomponenlr ,andost were diveitly velatid totha nwmber of companents reaui tis to uakty you theren another reason that DSB-SC war choum, and it rel sometime^ heal ttu tunn "multiplex stereo" in as sowation withit Theve are two woys todecoda anfM steveo broad oet The first to clevno dutat the baschand signat, which contains the LeR "swm"ot t de mo diul atz the DSE subcaryie, two stereo channels jand epera However it yow ve ener tooked ai thi γαw sug nal ovning out or the FM discreminatoy,cortaing both ht haieband and subcarriet sgnads, youll motia that t apperns to bea time domadn ultipured verscon of the kR chamela. youcamdrcod tby ceating a sakH clock from the γaw signal, and wrong this clock to directly samplah L and R channels Out of Houis compositr signal the di tvek.

one othey gides of ±우c)uehave the two sidelo unda desigmated ar lower and wpper side bandi 2.) The impulie au ablent at tfe inthe amplutude spectrum signifying the fact that the carricr termis suppree nthe taansmi tted wave 3) Tha minimum transmisscon handwidth reauived čs 2W İ.etulce the message bandwidt.