Throughput maximization over frequency-selective communication networks

Songtao Lu, Zhengdao Wang

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

1 Scopus citations

Abstract

We consider a network of pairs of nodes that perform simultaneous communications over frequency-selective channels. We assume that the whole frequency band is divided into a number of subbands, and each transmitter can only use one subband. Assuming that the network is geometrically infinite, we use the throughput as a measure of network performance. We consider the problem of allocating the nodes to the subbands so that the total throughput is maximized, under the constraint of fixed total spatial node density. The optimization problem turns out to be nonconvex. We investigate the detailed structure of the functions involved in the optimization and identify a set of properties of the optimal transmitters densities over the subbands. An iterative resource allocation algorithm with low complexity is derived. From the simulations, it is shown that the optimal solution obtained through the theoretical analysis is consistent with the one obtained through exhaustive search.

Original languageEnglish (US)
Title of host publication2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2008-2013
Number of pages6
ISBN (Electronic)9781479984060
DOIs
StatePublished - Jun 17 2015
Event2015 IEEE Wireless Communications and Networking Conference, WCNC 2015 - New Orleans, United States
Duration: Mar 9 2015Mar 12 2015

Publication series

Name2015 IEEE Wireless Communications and Networking Conference, WCNC 2015

Other

Other2015 IEEE Wireless Communications and Networking Conference, WCNC 2015
CountryUnited States
CityNew Orleans
Period3/9/153/12/15

Keywords

  • Lambert function
  • Throughput
  • frequency-selective networks
  • non-convex optimization

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