Combined Fountain Code with Network Coding in Cooperative Communication
ABSTRACT In this paper, we will investigate the block error rate (BLER) performance in cooperative communication, through combining fountain code with network coding. Contrast to the fixed-rate code, the rate of fountain code is not determined in advance, since that varies according to the instant channel state information. Under the error-free channel condition, network coding can get the maximum possible rate through coding at the correlative nodes not just store-and-forward. Based on this, the error-tolerant coding scheme is proposed by means of integrating fountain code with network coding in cooperative communication. Simulation results show that the proposed scheme can obtain the lower block error rate (BLER), compared with detect and forward scheme.
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ABSTRACT: This paper tackles the problem of providing end to end reliable transmissions in a randomly deployed wireless sensor network. To this aim, we investigate the simultaneous use of gradient broadcast routing (for its inherent adaptability to any network topology and its changes), fountain codes (for their universal property) and intra-flow network coding (to introduce packet diversity in redundant copies). We present the impact of the proposed XLT-GRAB strategy on a realistic network. This work permits to highlight that, compared to basic gradient broadcast routing, the strategy not only improves the reliability and the delay in the network but also clearly increases its lifetime.Sarnoff Symposium (SARNOFF), 2012 35th IEEE; 01/2012