Nested polar codes for wiretap and relay channels

Mattias Andersson, Vishwambhar Rathi, Ragnar Thobaben, Jorg Kliewer, Mikael Skoglund

Research output: Contribution to journalArticlepeer-review

146 Scopus citations


We show that polar codes asymptotically achieve the whole capacity-equivocation region for the wiretap channel when the wiretapper's channel is degraded with respect to the main channel, and the weak secrecy notion is used. Our coding scheme also achieves the capacity of the physically degraded receiver-orthogonal relay channel. We show simulation results for moderate block length for the binary erasure wiretap channel, comparing polar codes and two edge type LDPC codes.

Original languageEnglish (US)
Article number5545658
Pages (from-to)752-754
Number of pages3
JournalIEEE Communications Letters
Issue number8
StatePublished - Aug 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Modeling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering


  • Polar codes
  • decode-and-forward
  • relay channel
  • wiretap channel


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