Abstract
A generalization of unequal error protection (UEP) rateless codes and distributed rateless codes for distributed relay networks is proposed. We consider a two-hop relaying network where a single source transmits UEP rateless coded data to a destination via multiple relays. At the relays, the UEP rateless coded symbols are re-encoded by distributed rateless codes (DRC) to minimize the redundancy at the second hop. Previously introduced UEP rateless codes (URC) have supported a limited number of importance classes, mostly two classes, and targeted importance levels suited to a specific application. In this paper, however, we formulate an optimization problem to provide optimal URC in terms of the symbol error rate (SER) given any specific number and strengths of importance levels. Next, another optimization is proposed to obtain DRC with the minimum SER at a given overhead, which utilizes information of common symbols among the relays. The optimization methods are based on the AND-OR tree analysis and sequential quadratic programming. In addition, we evaluate the minimum achievable end-to-end symbol error rates over the wireless relay networks.
| Original language | English |
|---|---|
| Article number | 7303909 |
| Pages (from-to) | 4639-4650 |
| Number of pages | 12 |
| Journal | IEEE Transactions on Communications |
| Volume | 63 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2015 Dec 1 |
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Keywords
- Degree distribution optimization
- Distributed rateless codes
- unequal error protection
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Generalized Unequal Error Protection Rateless Codes for Distributed Wireless Relay Networks. / Baik, Jonghyun; Suh, Youngkil; Rahnavard, Nazanin; Heo, Jun.
In: IEEE Transactions on Communications, Vol. 63, No. 12, 7303909, 01.12.2015, p. 4639-4650.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Generalized Unequal Error Protection Rateless Codes for Distributed Wireless Relay Networks
AU - Baik, Jonghyun
AU - Suh, Youngkil
AU - Rahnavard, Nazanin
AU - Heo, Jun
PY - 2015/12/1
Y1 - 2015/12/1
N2 - A generalization of unequal error protection (UEP) rateless codes and distributed rateless codes for distributed relay networks is proposed. We consider a two-hop relaying network where a single source transmits UEP rateless coded data to a destination via multiple relays. At the relays, the UEP rateless coded symbols are re-encoded by distributed rateless codes (DRC) to minimize the redundancy at the second hop. Previously introduced UEP rateless codes (URC) have supported a limited number of importance classes, mostly two classes, and targeted importance levels suited to a specific application. In this paper, however, we formulate an optimization problem to provide optimal URC in terms of the symbol error rate (SER) given any specific number and strengths of importance levels. Next, another optimization is proposed to obtain DRC with the minimum SER at a given overhead, which utilizes information of common symbols among the relays. The optimization methods are based on the AND-OR tree analysis and sequential quadratic programming. In addition, we evaluate the minimum achievable end-to-end symbol error rates over the wireless relay networks.
AB - A generalization of unequal error protection (UEP) rateless codes and distributed rateless codes for distributed relay networks is proposed. We consider a two-hop relaying network where a single source transmits UEP rateless coded data to a destination via multiple relays. At the relays, the UEP rateless coded symbols are re-encoded by distributed rateless codes (DRC) to minimize the redundancy at the second hop. Previously introduced UEP rateless codes (URC) have supported a limited number of importance classes, mostly two classes, and targeted importance levels suited to a specific application. In this paper, however, we formulate an optimization problem to provide optimal URC in terms of the symbol error rate (SER) given any specific number and strengths of importance levels. Next, another optimization is proposed to obtain DRC with the minimum SER at a given overhead, which utilizes information of common symbols among the relays. The optimization methods are based on the AND-OR tree analysis and sequential quadratic programming. In addition, we evaluate the minimum achievable end-to-end symbol error rates over the wireless relay networks.
KW - Degree distribution optimization
KW - Distributed rateless codes
KW - unequal error protection
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UR - http://www.scopus.com/inward/citedby.url?scp=84961833645&partnerID=8YFLogxK
U2 - 10.1109/TCOMM.2015.2494011
DO - 10.1109/TCOMM.2015.2494011
M3 - Article
AN - SCOPUS:84961833645
VL - 63
SP - 4639
EP - 4650
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
SN - 0090-6778
IS - 12
M1 - 7303909
ER -