Picture of a black hole

Strathclyde Open Access research that creates ripples...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of research papers by University of Strathclyde researchers, including by Strathclyde physicists involved in observing gravitational waves and black hole mergers as part of the Laser Interferometer Gravitational-Wave Observatory (LIGO) - but also other internationally significant research from the Department of Physics. Discover why Strathclyde's physics research is making ripples...

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

The effect of pipelining feedback loops in high speed DSP systems

Alexander, S.W. and Stewart, R.W. (2005) The effect of pipelining feedback loops in high speed DSP systems. In: UNSPECIFIED.

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

Many of today’s Electronic Design Automation (EDA) tools include Intellectual Property (IP) cores that are fully pipelined to increase data throughput. Using these cores to implement data paths that do not involve feedback can result in fast, efficient designs. However, if they are used within a feedback loop this is not always the case. This paper examines the effects that using pipelined cores in feedback loops can have on a design. By considering two designs that implement a Givens rotation using feedback, which is used in QR decomposition [1], it is shown that, even though a pipelined design can be clocked faster, its data throughput is less than a non-pipelined design. Also, the non-pipelined design is shown to be smaller and consumes less power. Finally, a suggestion for a more efficient use of pipelining in feedback loops is presented, based on channel interleaving [2].