Achievable rates and scaling laws of wireless relay networks in the low SNR regime

Bo Wang, Junshan Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we study the achievable rates and scaling laws of large-scale wireless relay networks in the low SNR regime. Specifically, we consider a relay network that consists of one source node, one destination node and many relay nodes. We examine the achievable rates in the asymptotic regime in terms of the number of relay nodes n, the channel coherence interval L, and the SNR per link £. Assuming that the relay nodes use amplify-and-forward (AF) with network training, we present an equivalent end-to-end model, and obtain the corresponding achievable rates of the relay networks in the low SNR regime. Our findings show that when the normalized energy in each fading block (£L) is bounded below, the achievable rate is of the same scaling order as in the coherent relaying case, thus enabling us to characterize the capacity of relay networks in the low SNR regime.

Original languageEnglish (US)
Title of host publication43rd Annual Allerton Conference on Communication, Control and Computing 2005
PublisherUniversity of Illinois at Urbana-Champaign, Coordinated Science Laboratory and Department of Computer and Electrical Engineering
Pages1327-1336
Number of pages10
Volume3
ISBN (Electronic)9781604234916
StatePublished - 2005
Event43rd Annual Allerton Conference on Communication, Control and Computing 2005 - Monticello, United States
Duration: Sep 28 2005Sep 30 2005

Other

Other43rd Annual Allerton Conference on Communication, Control and Computing 2005
CountryUnited States
CityMonticello
Period9/28/059/30/05

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications

Fingerprint Dive into the research topics of 'Achievable rates and scaling laws of wireless relay networks in the low SNR regime'. Together they form a unique fingerprint.

Cite this