Power comparison of SRT and GST dividers

Martin Kuhlmann; Keshab K. Parhi

doi:10.1117/12.325717

2 October 1998 Power comparison of SRT and GST dividers

Martin Kuhlmann, Keshab K. Parhi

Proceedings Volume 3461, Advanced Signal Processing Algorithms, Architectures, and Implementations VIII; (1998) https://doi.org/10.1117/12.325717
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Generally divider algorithms can be separated into two different kinds of algorithms, the multiplicative algorithms (MA) and the iterative digit recurrence algorithms (IDRA). The number of iterations of the MA and IDRA are proportional to log₂ and the word-length, respectively. However every iteration of the MA consists of two multiplications and one addition, while the iteration period time of the IDRA only consists of one addition. The IDRA includes the SRT approach which does not require prescaling, and the GST approach which requires prescaling of the operands. The iteration period of the GST is much smaller due to the fact that the GST only examines three bits to predict the next quotient digit. Due to this reason, the overall latency of the GST-divider is shorter. Alternatively, by fixing the latency, the supply voltage of the GST can be reduced, resulting in a low power implementation. Thus, the GST is more suitable for low latency and low power applications.

Citation Download Citation

Martin Kuhlmann and Keshab K. Parhi "Power comparison of SRT and GST dividers", Proc. SPIE 3461, Advanced Signal Processing Algorithms, Architectures, and Implementations VIII, (2 October 1998); https://doi.org/10.1117/12.325717

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available