Picture of two heads

Open Access research that challenges the mind...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

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.