ssb dsb

Can someone explain to me the differences between "single sideband mixing," "double sideband mixing," and "IQ mixing?" Those are the terms I hear from work but don't really know what each one refers to specifically.

Thanks

well on mixing two signals u get two products plus that is f0, f0-df, f0+df

for transfer of information someone may use ssb, dsb or one can geneerate I and Q modulation signals
for details refer to any book on digital communication

http://www.williamson-labs.com/480_dsb.htm
http://www.williamson-labs.com/480_ssb.htm
http://www.williamson-labs.com/480_qam.htm

Interesting web site. Of course, the QAM depiction is wrong. It seems to show two different RF voltage waveforms at the output, when in fact there is only one voltage waveform present at the antenna! That would be pretty misleading for the uninitiated.

DSB mixing is the regular Am modulation , when the carrier is suppresed.that is,
there is no carrer at output spectrum only the two side bands will appear.

the term SSB means you only produce one side band instead of two.that is you only have upper or lower side bands, and again no carrier.

IQ means you create the AM modulation by using its base band and 90 degree phase shifted base band signal.

Mehdi

if you take ssb transmission your trnsmitting power will save and bandwidth will also save

if you take dsb it will take double the bandwidth of ssb and consumes more power.

demodulation of ssb signals is easy than dsb signals