
xxiv LIST OF FIGURES
19.1 A simplified block diagram of a QPSK receiver. ............... 318
19.2 AQPSKconstellationinneedofde-rotation. ................ 319
19.3 Asingleconstellationpointinneedofde-rotationandscaling........ 319
19.4 AbasicblockdiagramassociatedwithanAGC................ 320
19.5 The block diagram of a maximum likelihood phase error detector. ..... 320
19.6 QPSK phase trajectory plot prior to AGC. .................. 323
19.7 QPSKmagnitudeplotpriortoAGC...................... 323
19.8 QPSK phase trajectory plot prior to AGC. .................. 324
19.9 QPSK phase trajectory plot prior to AGC. .................. 324
19.10 QPSKconstellat