Capacity and delay scaling laws for cognitive radio networks with routing and network coding

Zheng Wang, Yalin Evren Sagduyu, Jason H. Li, Junshan Zhang

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

4 Scopus citations

Abstract

We characterize the asymptotic behavior of the throughput capacity and packet delay in cognitive radio (CR) networks. For the model where the network density grows, we derive the scaling laws for secondary users (SUs) who opportunistically access the spectrum when primary users (PUs) are idle. More specifically, we assume that SUs do not know PU (transmitter or receiver) locations a priori, and access local channels only after sensing them idle. We consider general overlay networks with arbitrary scaling of the number of PUs and SUs, and assume that PU transmissions are on and off intermittently in a dynamic network operation. Accordingly, the asymptotic SU performance is characterized in terms of the average area covered by PU transmissions. It is clear that shortest path routing (SPR) yields higher capacity whereas multipath routing (MPR) yields smaller delay. When compared with SPR and MPR, our findings show that source-based network coding (NC) with opportunistic routing, achieves the same capacity performance as SPR and the same delay performance as MPR.

Original languageEnglish (US)
Title of host publication2010 IEEE Military Communications Conference, MILCOM 2010
Pages1375-1380
Number of pages6
DOIs
StatePublished - Dec 1 2010
Event2010 IEEE Military Communications Conference, MILCOM 2010 - San Jose, CA, United States
Duration: Oct 31 2010Nov 3 2010

Publication series

NameProceedings - IEEE Military Communications Conference MILCOM

Other

Other2010 IEEE Military Communications Conference, MILCOM 2010
CountryUnited States
CitySan Jose, CA
Period10/31/1011/3/10

Keywords

  • Cognitive radio networks
  • Dynamic spectrum access
  • Network coding
  • Packet delay
  • Routing
  • Scaling laws
  • Throughput capacity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Wang, Z., Sagduyu, Y. E., Li, J. H., & Zhang, J. (2010). Capacity and delay scaling laws for cognitive radio networks with routing and network coding. In 2010 IEEE Military Communications Conference, MILCOM 2010 (pp. 1375-1380). [5680137] (Proceedings - IEEE Military Communications Conference MILCOM). https://doi.org/10.1109/MILCOM.2010.5680137