Polar codes for bidirectional broadcast channels with common and confidential messages

• We consider the bidirectional broadcast channel with common and confidential messages. We show that polar codes achieve the capacity of binary input symmetrical bidirectional broadcast channels with confidential messages, if one node's channel is a degraded version of the other node's channel. We also find a new bound on the cardinality of the auxiliary random variable in this setup.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)

Keyword

Auxiliary random variable

Binary inputs

Broadcast channels

Cardinalities

Confidential message

Polar codes

Communication systems

Broadcasting

Publication and Content Type

ref (subject category)

kon (subject category)