Coding for Parallel Gaussian Bidirectional Relay Channels: A Deterministic Approach Academic Article

abstract

• 2015 IEEE. We study the capacity region of the parallel Gaussian bidirectional relay channel with L independent subchannels and propose efficient coding schemes for approaching the capacity limit within a constant gap. A two-step approach is considered. First, the corresponding finite field linear deterministic model is studied, for which linear network coding across sub-channels is shown to achieve the capacity region of the channel. Next, based on the insight obtained, a lattice-based compute-and-forward scheme together with simple linear network coding across sub-channels is proposed and is shown to achieve the capacity region of the Gaussian model to within L bits per user regardless of the channel parameters. Even though coding across different sub-channels is necessary for approaching the capacity region, it is shown that this can be realized through a simple linear network coding scheme (across different sub-channels) at the relay.

authors

• Liu, Tie
• Narayanan, Krishna

published proceedings

• IEEE TRANSACTIONS ON INFORMATION THEORY

author list (cited authors)

• Huang, Y., Narayanan, K. R., & Liu, T.

citation count

• 0

complete list of authors

• Huang, Yu-Chih||Narayanan, Krishna R||Liu, Tie

publication date

• January 2016

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE TRANSACTIONS ON INFORMATION THEORY  Journal

keywords

• And Linear Deterministic Models
• Bidirectional Relay Channels
• Inter-symbol Interference
• Mimo Channels
• Two Way Relay Channels

Digital Object Identifier (DOI)

• 10.1109/TIT.2015.2504445

start page

• 260

end page

• 271

volume

• 62

issue

• 1