Design of diversity-achieving LDPC codes for H-ARQ with cross-packet channel coding

In wireless scenarios an effective protocol to increase the reliability for time-varying channels is the hybrid automatic repeat request (H-ARQ). The H-ARQ scheme with cross-packet channel coding (CPC) is a recently published extension of H-ARQ with several advantages. No full-diversity low-density paritycheck (LDPC) code design for the whole range of coding rates yielding full-diversity has been published. In this paper the authors provide a new outage behavior analysis and a new structured LDPC code ensemble achieving full-diversity for HARQ with CPC by exploiting the rootcheck principle. Simulation results show that the new code design outperforms the previous approaches, providing full-diversity and good coding gain, also at high coding rates.

• Type: Journal
• Year: 2010
• Where: PIMRC
• Authors: Dieter Duyck, Daniele Capirone, Christoph Hausl, Marc Moeneclaey
• Keywords: Coding Rates, Communications, Full-diversity Low-density Paritycheck, Hybrid Automatic Repeat, PIMRC 2010