Exploiting UEP in QAM-based BICM: Interleaver and Code Design
Journal article, 2010

In this paper we formally analyze the interleaver and code design for QAM-based BICM transmissions using the binary reflected Gray code. We develop analytical bounds on the bit error rate and we use them to predict the performance of BICM when unequal error protection (UEP) is introduced by the constellation labeling. Based on these bounds the optimum design of interleaver and code is found, and numerical results for representative configurations are presented. When the new design is used, the improvements may reach 2 dB, and they are obtained without any increase on the transceiver's complexity. We also introduce the concept of generalized optimum distance spectrum convolutional codes, which are the optimum codes for QAM-based BICM transmissions.

QAM

optimum distance spectrum codes

multiple interleavers

BICM

interleaver design

UEP

Author

Alex Alvarado

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Erik Agrell

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Leszek Szczecinski

INRS-Energy, Materials and Telecommunications

Arne Svensson

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

IEEE Transactions on Communications

00906778 (ISSN)

Vol. 58 2 500-510 5407616

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Signal Processing

DOI

10.1109/TCOMM.2010.02.080525

More information

Latest update

3/29/2018