Abstract
Two incremental redundancy hybrid ARQ (IR-HARQ) schemes are compared: one is based on LDPC code ensembles with random transmission assignments, the other is based on recently introduced Raptor codes. A number of important issues, such as rate and power control, and error rate performance after each transmission on time varying binary-input, symmetric-output channels are addressed by analyzing performance of LDPC and Raptor codes on parallel channels. The theoretical results obtained for random code ensembles are tested on several practical code examples by simulation. Both theoretical and simulation results show that both LDPC and Raptor codes are suitable for HARQ schemes. Which codes would make a better choice depends mainly on the width of the signal-to-noise operating range of the HARQ scheme, prior knowledge of that range, and other design parameters and constraints dictated by standards.
| Original language | English |
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| Title of host publication | 2006 IEEE information theory workshop, ITW 2006 |
| Place of Publication | Piscataway, NJ |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Pages | 155-159 |
| Number of pages | 5 |
| ISBN (Print) | 142440035X, 9781424400355 |
| Publication status | Published - 2006 |
| Externally published | Yes |
| Event | 2006 IEEE Information Theory Workshop, ITW 2006 - Punta del Este, Uruguay Duration: 13 Mar 2006 → 17 Mar 2006 |
Other
| Other | 2006 IEEE Information Theory Workshop, ITW 2006 |
|---|---|
| Country/Territory | Uruguay |
| City | Punta del Este |
| Period | 13/03/06 → 17/03/06 |