{"title":"一种用于小卫星的节能混合FEC-ARQ通信方案","authors":"Oliver Vassallo, Victor Buttigieg, M. Azzopardi","doi":"10.1109/cits52676.2021.9618067","DOIUrl":null,"url":null,"abstract":"With the extensive cost reductions associated with small satellites, low Earth orbit missions are increasingly becoming popular, mostly with universities and the New-Space industry. However, a persistent limitation associated with the smallest satellites is the significant reduction in energy resources that each satellite has at its disposal. This limitation poses a challenge when using advanced communication systems, particularly those employing advanced forward error correction such as low-density parity check (LDPC) codes. To conserve the high computational energy required to decode such codes, we propose a novel early termination stopping criterion for LDPC decoders that is based on detecting the periodicity of syndrome weight oscillations. The technique is independent of the operating signal-to-noise ratio and results in reductions better than 80%, in the computational energy expended on a well-known bit-flipping decoding algorithm. Real world results are presented using an ARM-based microcontroller.","PeriodicalId":211570,"journal":{"name":"2021 International Conference on Computer, Information and Telecommunication Systems (CITS)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An Energy Efficient Hybrid FEC-ARQ Communication Scheme for Small Satellite Applications\",\"authors\":\"Oliver Vassallo, Victor Buttigieg, M. Azzopardi\",\"doi\":\"10.1109/cits52676.2021.9618067\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"With the extensive cost reductions associated with small satellites, low Earth orbit missions are increasingly becoming popular, mostly with universities and the New-Space industry. However, a persistent limitation associated with the smallest satellites is the significant reduction in energy resources that each satellite has at its disposal. This limitation poses a challenge when using advanced communication systems, particularly those employing advanced forward error correction such as low-density parity check (LDPC) codes. To conserve the high computational energy required to decode such codes, we propose a novel early termination stopping criterion for LDPC decoders that is based on detecting the periodicity of syndrome weight oscillations. The technique is independent of the operating signal-to-noise ratio and results in reductions better than 80%, in the computational energy expended on a well-known bit-flipping decoding algorithm. Real world results are presented using an ARM-based microcontroller.\",\"PeriodicalId\":211570,\"journal\":{\"name\":\"2021 International Conference on Computer, Information and Telecommunication Systems (CITS)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-11-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2021 International Conference on Computer, Information and Telecommunication Systems (CITS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/cits52676.2021.9618067\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 International Conference on Computer, Information and Telecommunication Systems (CITS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/cits52676.2021.9618067","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
An Energy Efficient Hybrid FEC-ARQ Communication Scheme for Small Satellite Applications
With the extensive cost reductions associated with small satellites, low Earth orbit missions are increasingly becoming popular, mostly with universities and the New-Space industry. However, a persistent limitation associated with the smallest satellites is the significant reduction in energy resources that each satellite has at its disposal. This limitation poses a challenge when using advanced communication systems, particularly those employing advanced forward error correction such as low-density parity check (LDPC) codes. To conserve the high computational energy required to decode such codes, we propose a novel early termination stopping criterion for LDPC decoders that is based on detecting the periodicity of syndrome weight oscillations. The technique is independent of the operating signal-to-noise ratio and results in reductions better than 80%, in the computational energy expended on a well-known bit-flipping decoding algorithm. Real world results are presented using an ARM-based microcontroller.