Performance Analysis of Unequal Error Protection Distributed Network Coding Based on Fountain Codes

Abstract

In this paper, we propose an unequal error protection (UEP) distributed network coding (DNC) scheme based on fountain codes to provide arbitrary error protection (i.e., infinite protection levels) to all the source nodes in wireless relay networks (WRNs). We derive the upper and lower bit error rate (BER) bounds for the proposed UEP DNC scheme with maximum-likelihood (ML) decoding over Rayleigh fading channels. Numerical results show that the derived analytical bounds are tight and our proposed UEP DNC scheme based on fountain codes has a strong UEP property.Index Terms-Distributed network coding, wireless relay networks, fountain codes, Rayleigh fading channels, upper and lower bit error rate bounds.

Design of expanding window fountain codes with unequal power allocation over BIAWGN channels

“…Similar to [8, 21], Hussain et al exploited regular variable‐node degrees in each part to improve the performance of weighted UEP‐LT codes over BIAWGN channels in [25]. In [26], Yue et al designed UEP distributed network coding scheme based on weighted UEP‐LT codes in wireless relay channels.…”