'Ssb modulation' diaporamas de présentation

Time division multiplexing TDM

Time division multiplexing TDM. The sampling theorem states that a given message signal can be transmitted as a sequence of samples of as shown. m(t). 5T s. 6T s. 7T s. T s. 2T s. 3T s. 4T s. TDM graphical representation for two signals.

593 views • 16 slides

Electrical Communications Systems ECE.09.331 Spring 2010

Electrical Communications Systems ECE.09.331 Spring 2010. Lecture 7b March 3, 2010. Shreekanth Mandayam ECE Department Rowan University http://engineering.rowan.edu/~shreek/spring10/ecomms/. Signals Systems. Modulation Index Efficiency Bandwidth Noise.

268 views • 16 slides

Electrical Communications Systems ECE.09.433 Spring 2019

Electrical Communications Systems ECE.09.433 Spring 2019. Lecture 4b February 14, 2019. Shreekanth Mandayam ECE Department Rowan University http://engineering.rowan.edu/~shreek/spring19/ecomms/. Plan. DSB-SC Modulation Costas Loop QAM Complex Envelope Representation

155 views • 15 slides

EE354 : Communications System I

EE354 : Communications System I. Lecture 15,16: Linear Modulations Aliazam Abbasfar. Outline. Amplitude Modulation DSB/AM/SSB/VSB. DSB modulation. Double sideband modulation x o (t) = A c x(t) cos ( w c t ) Lowpass signal x I (t) = x(t), x Q (t) = 0 A(t), Q (t)= ?

333 views • 13 slides

Electrical Communications Systems ECE.09.331 Spring 2010

Electrical Communications Systems ECE.09.331 Spring 2010. Lecture 8a March 9, 2010. Shreekanth Mandayam ECE Department Rowan University http://engineering.rowan.edu/~shreek/spring10/ecomms/. Signals Systems. Modulation Index Efficiency Bandwidth Noise.

210 views • 12 slides

DSB-SC & SSB

DSB-SC & SSB. DSB-SC Modulation. A DSB-SC signal is an AM signal of the form: S(t)=Ac m(t) cosw c t Normal AM signal : S(t)=Ac[1+um(t)] cosw c t =Ac cosw c t +Ac u m(t) cosw c t. Frequency spectrum of DSB-SC signal.

820 views • 11 slides

Single-side band

1.34k views • 8 slides