Enabling Fast Polar SC Decoding with IR-HARQ
Preprint
Abstract
To extend the applications of polar codes within next-generation wireless communication systems, it is essential to incorporate support for Incremental Redundancy (IR) Hybrid Automatic Repeat Request (HARQ) schemes. For very high-throughput applications, Successive Cancellation (SC) decoding is particularly appealing for polar codes owing to its high area efficiency. In this paper, we propose modifications to SC decoders that employ special nodes to accelerate decoding. Our modifications enable the use of polar IR-HARQ with SC decoding for high throughput applications. Compared to the unmodified SC IR-HARQ scheme, our proposed approach allows us to achieve a 72% reduction in node traversals with a polar code of length 2048. Simulation results confirm that the proposed special node modifications do not cause any degradation in FER performance.Keywords
All Related Versions
This publication has 6 references indexed in Scilit:
- An Adaptive IR-HARQ Scheme for Polar Codes by Polarizing Matrix ExtensionIEEE Communications Letters, 2018
- Fast Polar Decoders: Algorithm and ImplementationIEEE Journal on Selected Areas in Communications, 2014
- Polar coded HARQ scheme with Chase combining2014
- A Simplified Successive-Cancellation Decoder for Polar CodesIEEE Communications Letters, 2011
- Channel Polarization: A Method for Constructing Capacity-Achieving Codes for Symmetric Binary-Input Memoryless ChannelsIEEE Transactions on Information Theory, 2009
- Coding Performance of Hybrid ARQ SchemesIEEE Transactions on Communications, 2006