Traffic shaping impact of network coding on spectrum predictability and jamming attacks

Shanshan Wang, Yalin E. Sagduyu, Junshan Zhang, Jason Hongjun Li

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

3 Scopus citations


Network coding not only improves the information flow rates but also shapes the traffic by inducing some predictable structure on the spectrum usage. Specifically, due to the buffering and block processing involved in network coding, the transitions between busy periods and idle periods are expected to be less frequent, which in turn results in a more predictable structure in the network-coded communications, compared to traditional store-and-forward based transmissions. For broadcast communications over erasure channels, we characterize how network coding adds memory to the channel usage and increases the spectrum predictability compared to the basic retransmission scheme (e.g., ARQ). This traffic shaping effect of network coding can be readily applied to cognitive radio networks. We develop adaptive spectrum sensing for secondary users to discover the spectrum opportunities in primary user channels with network-coded transmissions, and show that the throughput of secondary users can be significantly improved. On the other hand, we caution that the predictable structure induced by network coding also presents a security challenge, in the sense of making wireless channels more susceptible to jamming attacks. Our results lead to a new understanding of network coding as a spectrum shaper, and reveal the inherent trade-offs between the throughput and security objectives resulted from the spectrum predictability induced by network coding.

Original languageEnglish (US)
Title of host publication2010 Military Communications Conference, MILCOM 2010
Number of pages6
StatePublished - Dec 1 2011
Event2011 IEEE Military Communications Conference, MILCOM 2011 - Baltimore, MD, United States
Duration: Nov 7 2011Nov 10 2011

Publication series

NameProceedings - IEEE Military Communications Conference MILCOM


Other2011 IEEE Military Communications Conference, MILCOM 2011
Country/TerritoryUnited States
CityBaltimore, MD


  • Network coding
  • channel predictability
  • cognitive radio
  • security
  • spectrum access
  • traffic shaping

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'Traffic shaping impact of network coding on spectrum predictability and jamming attacks'. Together they form a unique fingerprint.

Cite this