Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published November 2003 | Published
Book Section - Chapter Open

Is broadcast plus multiaccess optimal for Gaussian wireless networks?

Abstract

In this paper we show that "separation"-based approaches in wireless networks do not necessarily give good performance in terms of the capacity of the network. Therefore in optimal design of a wireless network, its total structure should be considered. In other words, achieving capacity on the subnetworks of a wireless network does not guarantee globally achieving capacity. We will illustrate this fact by considering some examples of multistage Gaussian wireless relay networks. We will consider a wireless Gaussian relay network with one stage in both fading and nonfading environment. We show that as the number of relay nodes, n, grows large, the capacity of this network scales like log n. We then show that with the "separation"-based scheme, in which the network is viewed as the concatenation of a broadcast and a multiaccess network, the achievable rate scales as log log n and as a constant for fading and nonfading environment, respectively, which is clearly suboptimal.

Additional Information

© 2004 IEEE. Reprinted with permission. This work was supported in part by the National Science Foundation under grant no. CCR-0133818, by the Office of Naval Research under grant no. N00014-02-1-0578, and by Caltech's Lee Center for Advanced Networking.

Attached Files

Published - DANasilo03.pdf

Files

DANasilo03.pdf
Files (382.0 kB)
Name Size Download all
md5:32928518c7cc02045c433f130ef6060d
382.0 kB Preview Download

Additional details

Created:
August 22, 2023
Modified:
March 5, 2024