ATGH 0000 How to TFK less      ATEL 5224 Communication Systems Engineering I           ADVANCED  parchment IN TECHNOLOGY  (ELECTRONIC ENGINEERING)  SEMESTER 1     referenceStudent IDGroup   TAN CHEE CHUNG                               10WTA03410                         convention E  TAN KHAI XIAN                           10WTA10975                        GROUP E    Lecturer : Mr Leong Koon Kam    Introduction:    Amplitude-shift keying (ASK):  In  premium shift keying, the amplitude of high frequency   letter carrier  show is switched between  two or more values. For the double star case, the usual choice is on-off keying (OOK).  turn out a  episode of double star pulses, as shown in  see to it below the 1s turn ON the carrier of amplitude A, the 0s turn it OFF. The ASK   undulate form for  each pulses (i.e. binary 1) can be written as: -    Phase-shift keying (PSK):  Phase-shift keying (PSK) is a  mode of digital communication in which the  stagecoach of a transmitted signal is var   ied to convey information.  at that  browse  are several methods that can be used to   shamble PSK. The simplest PSK technique is called binary  conformation-shift keying (BPSK). It uses two opposite signal  stagecoachs (0 and  integrity hundred eighty degrees). The digital signal is broken up time  clear-sighted into individual  piece of musics (binary digits).

 The state of each bit is determined  jibe to the state of the preceding bit. If the phase of the  swing does not change,  hence the signal state stays the  identical (0 or 1). If the phase of the wave changes by 180 degrees -- that is, if the phase reverses --    then the signal state changes (from 0 to 1,!    or from 1 to 0). Because there are two possible wave phases, BPSK is sometimes called biphasic modulation.    Frequency-shift keying (FSK):    Frequency-shift keying (FSK) is a method of transmitting digital signals. The two binary states, logic 0 (low) and 1 (high), are each  be by an  running(a) waveform. Logic 0 is represented by a wave at a specific frequency, and logic 1 is represented by a wave at a unlike frequency. A modem converts the binary data from a...If you want to  experience a full essay, order it on our website: 
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