Chapter 8 Communication Systems Figure 8.21 SSB system using a 900 phase-shift network. cosO t >0x hla +jo<0 0) 90°p/ase- shift sin o t rvo) X2(o) 0 M ll11 Chapter 8 Communication Systems − M 0  X(j)  M − M 0  X ( j) p  M − j j Figure 8.21 SSB system using a 90o phase-shift network. ( )    +   = j 0 - j 0   H j x(t) y(t) t c sin y (t) 2 y (t) 1 x (t) p 90o phase-shift cos c  t