Digital signal processing engine design for polar transmitter in wireless communication systems

Polar modulation techniques offer the capability of multimode wireless system and the potential for the high efficiency Power Amplifier (PA). This paper describes a new design of Digital Signal Processing (DSP) engine for the polar transmitter. The digital part includes rectangular-to-polar converter and digital phase modulator, and the engine is designed for EDGE (2.5G) system. We employ the Coordinate Rotation Digital Computer (CORDIC) and Direct Digital Frequency Synthesizer (DDFS) techniques in our design. A prototype chip has been designed and fabricated in UMC 0.18 um CMOS process with 1P6M technology.

• Type: Conference
• Year: 2005
• Where: ISCAS
• Authors: Hung Yang Ko, Yi-Chiuan Wang, An-Yeu Wu
• Keywords: Coordinate Rotation Digital Computer, Digital, ISCAS 2005, Polar Modulation Techniques