Paper Info
Title
IRA code design for IDMA-based multi-pair bidirectional relaying systems
Abstract
In this paper, the design of Irregular Repeat Accumulate (IRA) Codes for Interleave-Division Multiple-Access (IDMA)-based multi-pair bidirectional relaying systems is presented. Bidirectional relaying allows to efficiently cope with the loss in spectral efficiency that is inherent to relaying systems due to the half-duplex constraint. However, as soon as multiple communication pairs use one common relay for communication, the question of medium access arises. Since orthogonal medium access schemes again introduce a rate loss to the system, nonorthogonal medium access based on IDMA is proposed. Further, in order to optimize the IDMA-based system regarding spectral efficiency, IRA codes are applied which allow for a highly flexible code design. This paper gives a description of the general code design process based on EXIT-analysis. Moreover, some design examples are given and the resulting systems are compared to conventionally coded IDMA systems based on convolutional codes.
Year
DOI
Venue
2013
10.1109/GLOCOMW.2013.6824993
Globecom Workshops
Keywords
Field
DocType
code division multiple access,convolutional codes,interleaved codes,relay networks (telecommunication),EXIT-analysis,IDMA-based multipair bidirectional relaying systems,IRA code design,convolutional codes,half-duplex constraint,interleave-division multiple-access systems,irregular repeat accumulate codes,nonorthogonal medium access,spectral efficiency
Convolutional code,Computer science,Turbo code,Serial concatenated convolutional codes,Block code,Computer network,Theoretical computer science,Spectral efficiency,Linear code,Decoding methods,Computer engineering,Relay
Conference
ISSN
Citations 
PageRank 
2166-0069
2
0.42
References 
Authors
7
4
Name
Order
Citations
PageRank
Florian Lenkeit121.10
Carsten Bockelmann227924.67
Dirk Wübben336136.45
Armin Dekorsy451357.91