Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

A new low-cost discrete bit loading using greedy power allocation

Alhanafy, W.E.A.E. and Weiss, S. (2009) A new low-cost discrete bit loading using greedy power allocation. In: The Third Mosharaka International Conference on Communications, Computers and Applications (MIC-CCA2009) 26-28 October, 1900-01-01.

[img]
Preview
PDF (strathprints027152.pdf)
strathprints027152.pdf

Download (277kB) | Preview

Abstract

In this paper we consider a low cost bit loading based on the greedy power allocation (GPA). Compared to the standard GPA, which is optimal in terms of maximising the data throughput, three suboptimal schemes are suggested, which perform GPA on subsets of subchannels only. We demonstrate how these schemes can reduce complexity. Two of the proposed algorithms can achieve near optimal performance by including a transfer of residual power between subsets at the expense of a very small extra cost. By simulations, we show that the two near optimal schemes perform best in two separate and distinct SNR regions.