关键词: CORDIC算法,低时延,资源,功耗,优化

Abstract: CORDIC algorithm has been widely used because it is easy to implement in hardware to calculate a variety of transcendental functions．How to reduce the number of iterations and maintain the calculation and the compensation of the correction factor is the difficulty of the algorithm,and it also needs to extend the range of rotation angle．In this paper,conventional CORDIC algorithm was divided into two steps to minimize the number of iterations．At the same time,the modified algorithm uses shift operations instead of the lookup table to reduce the time used by searching table,and also help to reduce power consumption．Finally,two algorithms were implemented in Altera Corporation Cyclone series chip EP4CGX22CF19C6.The experimental results show that compared to conventional algorithm,this algorithm saves 34.84% resources ,and its delay is about six clock cycles less on various frequencies,and the power consumption on various frequencies declines about 5.54% at least,and the higher the frequency rises,the more the power consumption declines.

Key words: CORDIC algorithm,Low-latency,Resource,Power-consumption,Optimization