An improved SCS algorithm based on LINC transmitter

This paper proposes an improved signal component separation (SCS) method to solve the non-constant envelop modulated signals through traditional SCS in LINC (Linear Amplification With Nonlinear Components) transmitter. The basic idea of this algorithm is to analyze the angle between adjacent signals, then adopting the method which can improve the signal peak to average power ratio (PAPR) and introducing the idea of “keep and go”, to minimize envelope mutations caused by the errors from CORDIC algorithm processing, so that the ideal signal envelope can be obtained. The experimental simulation demonstrated the effectiveness and feasibility of this algorithm. The signal PAPR can be reduced to 0.0010dB through data from experimental measurements, which is more convenient for linear power amplifier design.