Abstract
Spatially-Coupled LDPC (SC-LDPC) codes have been recently shown to be very efficient for transmissions over nonergodic channels, in particular over block-fading channels [1]. In fact, it is possible to design a SC-LDPC code with any given code diversity [2]. In this work, we investigate the performance of SC-LDPC codes over block-fading channels, assuming a mismatch (or offset) between the first bit of a transmission packet and a first bit of a codeword. Such a mismatch is called the synchronisation offset, and it has a negative impact on the code diversity. We propose a data-allocation scheme for SC-LDPC codes that allows to obtain a robustness to the synchronisation offset. Combined together with the code design from [2], it allows to design efficient SC-LDPC codes, whose performance degrades only slowly under imperfect transmission conditions.
Original language | English |
---|---|
Title of host publication | [Host publication title missing] |
Publisher | IEEE - Institute of Electrical and Electronics Engineers Inc. |
Number of pages | 5 |
Publication status | Published - 2015 |
Event | IEEE BlackSeaCom - Constanta, Romania Duration: 2015 May 19 → … |
Conference
Conference | IEEE BlackSeaCom |
---|---|
Country/Territory | Romania |
City | Constanta |
Period | 2015/05/19 → … |
Subject classification (UKÄ)
- Electrical Engineering, Electronic Engineering, Information Engineering
Free keywords
- spatial coupling
- spatially coupled codes
- LDPC codes
- LDPC convolutional codes
- block fading channel
- root LDPC codes