OFFSET PHASE ROTATION SHIFT KEYING MODULATION APPARATUS AND METHOD, PHASE SILENCE ROTATION SHIFT KEYING MODULATION APPARATUS AND METHOD, AND PHASE SILENCE ROTATION SHIFT KEYING DEMODULATION APPARATUS AND METHOD

• Main Authors: SEO, YOUNG DAE, CHOI, HYUNG JIN, SHIM, HAN BO, WON, KYUNG HOON, KIM, KI YUN, SEO, SUNG IL, CHOI, IL MUK
• Format: Patent
• Language: English; Korean
• Published: 06.03.2013
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

PURPOSE: An offset phase rotation shift keying(OPRSK) modulation apparatus and a method, a phase silence rotation shift keying(PSRSK) modulation apparatus and a method, a phase silence rotation shift keying demodulation apparatus and a method are provided to reduce a nonlinear distortion in an environment in which the nonlinear distortion exists by applying a power dissipation and a phase offset of a symbol section at the same time, based on a modulation method of high power efficiency, for a low power WBAN system. CONSTITUTION: An offset phase rotation shift keying modulation apparatus comprises a symbol generating unit(610) generating a symbol having a phase offset of 45° by a constellation shaft of a first effective symbol section located in a front part and a constellation shaft of a second effective symbol section located in a rear part when performing a modulation positioning a signal waveform in the front part or the rear part among the total section of the symbol based on the three inputted bit information, and a transmission unit(620) transmitting the generated symbol. . [Reference numerals] (610) Symbol generating unit; (620) Transmission unit; (AA) 3 input bits; (BB) Transmission signal