Reconfigurable low density parity check (LDPC) code interleaving for SIO and MIMO OFDM systems

Markus Muck*, Stéphanie Rouquette-Léveil, Marc De Courville

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

1 Citation (Scopus)

Abstract

This contribution derives an algorithm for optimizing the mapping of irregular and systematic Low Density Parity Check (LDPC) code word bits onto Orthogonal Frequency Division Multiplexing (OFDM) carriers in the context of a frequency selective fading channel in both, a Single-Transmit Single-Receive (SISO channel) and Multiple-Transmit Multiple-Receive (MIMO channel) antennas scenario. The absolute values of the frequency domain channel coefficients are assumed to be known and the LDPC code to be given (contrary to existing proposals where the LDPC code is optimized with respect to a given propagation channel). The proposed solution can alternatively be interpreted as an adaptive interleaver (which is inherently available in software defined radio type of system implementations) optimized for a given channel impulse response. In a typical WLAN (IEEE802.11n) scenario, the proposed mapping technique improves the system performance by up to approx. 0.7dB compared to a linear (direct) mapping.

Original languageEnglish
Title of host publication2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-5
Number of pages5
ISBN (Print)078039710X, 9780780397101
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC - Cannes, France
Duration: 2 Jul 20065 Jul 2006

Other

Other2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
CountryFrance
CityCannes
Period2/07/065/07/06

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