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Rateless Codes for ...
Rateless Codes for the Multiway Relay Channel
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- Hussain, Iqbal (författare)
- KTH,Kommunikationsteori
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- Xiao, Ming (författare)
- KTH,Kommunikationsteori
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- Rasmussen, Lars K. (författare)
- KTH,Kommunikationsteori
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: IEEE Wireless Communications Letters. - 2162-2337 .- 2162-2345. ; 3:5, s. 457-460
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- We consider distributed Luby transform (DLT) codes for efficient packet transmission in a multi-way relay network, where the links are modeled as erasure channels. Density evolution is applied for asymptotic performance analysis, and subsequently used in a linear-programming design framework for optimizing the degree distribution at the relay in terms of overhead. Moreover a buffer is introduced at the relay to enable efficient downlink transmission even if packets are lost during uplink transmission. Performance losses in terms of delay and/or erasure rates caused by link erasures during uplink transmission are thus alleviated. The proposed DLT codes provide significant improvements in overhead and decoded erasure rates. Numerical results for finite-length codes follow closely the asymptotic analysis. Our results demonstrate that the proposed buffer-based DLT codes outperform its counterparts for lossy uplink transmission.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Nyckelord
- degree distribution
- erasure rate.
- LT codes
- multi-way relay channels
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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