Compress-and-Forward Strategy for Cognitive Interference Channel with Unlimited Look-Ahead

Author

Mirmohseni, Mahtab ; Akhbari, Bahareh ; Aref, Mohammad Reza

Author_Institution

Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran

Volume

15

Issue

10

fYear

2011

fDate

10/1/2011 12:00:00 AM

Firstpage

1068

Lastpage

1071

Abstract

This study investigates the Causal Cognitive Interference Channel (CC-IFC) with unlimited look-ahead, in which the cognitive user non-causally knows its entire received sequence. A coding scheme is proposed which combines the Compress-and-Forward (CF) strategy and Marton coding at the cognitive user. Using this scheme, a new inner bound on the capacity region (achievable rate region) is established for the CC-IFC with unlimited look-ahead. Further, the derived achievable rate region is extended to the Gaussian case and is compared with the previously obtained results via numerical examples, which are based on the Decode-and-Forward (DF) strategy.

Keywords

Gaussian processes; cognitive radio; encoding; interference (signal); wireless channels; Gaussian case; Marton coding; causal cognitive interference channel; coding scheme; compress-and-forward strategy; unlimited look-ahead; Delay; Encoding; Indexes; Interference channels; Receivers; Relays; Transmitters; Cognitive interference channel; Marton coding; Wyner-Ziv coding; compress-and-forward;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.081211.111136

Filename

5997334