A Pan-Function Model for the Utilization of Bandwidth Improvement and PAPR Reduction

作者：Xu, Yidong; Xue, Wei^*; Shang, Wenjing

来源：Mathematical Problems in Engineering, 2014, 2014: 658093.

DOI：10.1155/2014/658093

• Attenuation factors
• Constant envelope
• Function modeling
• Minimum shift keying
• PAPR reduction
• Peak to average power ratio
• Quadrature modulation
• Quadrature phaseshift keying (QPSK)

Aiming at the digital quadrature modulation system, a mathematical Pan-function model of the optimized baseband symbol signals with a symbol length of 4T was established in accordance with the minimum out-band energy radiation criterion. The intersymbol interference (ISI), symbol-correlated characteristics, and attenuation factor were introduced to establish the mathematical Pan-function model. The Pan-function was added to the constraints of boundary conditions, energy of a single baseband symbol signal, and constant-envelope conditions. Baseband symbol signals with the optimum efficient spectrum were obtained by introducing Fourier series and minimizing the Pan-function. The characteristics of the spectrum and peak-to-average power ratio (PAPR)of the obtained signals were analyzed and compared with the minimum shift keying (MSK) and quadrature phase-shift keying (QPSK) signals. The obtained signals have the characteristics of a higher spectral roll-off rate, less out-band radiation, and quasi-constant envelope. We simulated the performance of the obtained signals, and the simulation results demonstrate that the method is feasible.

• 出版日期2014
• 单位哈尔滨工程大学