Title :
An Optimal Algorithm for Designing NCO Circuit in Mobile Communication Systems
Author :
Hu, Shuhua ; Li, Hui ; Huang, Jiaqing
Author_Institution :
Key Lab. of Integrated Microsyst., Shenzhen Grad. Sch. Peking Univ., Shenzhen
Abstract :
In this paper, we present an algorithm named coordinate rotation digital computer (CORDIC) for designing the numerically controlled oscillator (NCO) used in digital down converters (DDC) of GSM applications. Synthesizing with synopsys EDA tools shows that CORDIC can significantly reduce the die size by about 30%, thus greatly expands the application fields of NCO. Meanwhile, this paper analyzes the problems in engineering implementation and points out the future research directions.
Keywords :
cellular radio; convertors; digital arithmetic; network synthesis; radiofrequency oscillators; CORDIC; GSM applications; Synopsys EDA tools; coordinate rotation digital computer; designing NCO circuit; digital down converters; mobile communication systems; numerically controlled oscillator; Algorithm design and analysis; Application software; Circuits; Costs; Frequency; GSM; Mobile communication; Oscillators; Table lookup; Tuning; CORDIC; Communication; NCO;
Conference_Titel :
Communications and Mobile Computing, 2009. CMC '09. WRI International Conference on
Conference_Location :
Yunnan
Print_ISBN :
978-0-7695-3501-2
DOI :
10.1109/CMC.2009.132
