Apparatus and method for generating pulse based on time delay and wave transform and transmitter of multi-frequency band communication system using the same

A method for generating a pulse based on time delay and wave transform, the method comprising the steps of:

• a) separating a square wave from a trigger signal and providing the square wave, time delay information and amplitude information to a time delay means having a plurality of time delayers;
• b) at each time delayer, delaying time of the square wave for a predetermined time based on the time delay information, and adjusting an amplitude of the square wave based on the amplitude information, to thereby generate a time-delayed signal;
• c) at a pulse shaping means, generating a pulse having a predetermined pulse width based on the time-delayed signals;
• and
• d) at a wave transforming means, transforming a form of the pulse to generate a desired signal.

An apparatus for transmitting a signal in a wireless communication system, comprising:

• a source encoding means for encoding a signal to be transmitted, to thereby generate a source encoded signal;
• a modulating means for performing digital modulation of the source encoded signal, to thereby generate a modulated signal;
• a pulse generating means for generating a pulse signal based on the modulated signal;
• a pulse bandwidth control means for adjusting a bandwidth of the pulse signal;
• a bandwidth selection control means for providing pulse bandwidth information to the pulse bandwidth control means;
• a switching means for allowing noise to be removed from the pulse signal ;
• and
• a transmitting means for transmitting the pulse signal.