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Analysis of BER and energy efficiency of raptor codes under BEC for wireless sensor network

V. Nithya, B. Ramachandran, S. Subashini

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Abstract

This paper has explored the energy efficiency of Raptor codes; a first known class of fountain codes in an energy constrained network. Transmission power is adjusted dynamically to overcome unreliability over lossy links in wireless sensor network. One of the most felicitous key for this reliability issue is using Forward Error Correction (FEC) codes. This paper investigates the energy bagged by one such FEC code called Raptor codes in the Binary Erasure Channel (BEC) scenario. The performance analysis of Raptor codes in terms of energy by varying its precoder is carried out. The network parameters such as Bit Error Rate (BER), Throughput and Energy Spent per Bit are considered for the study. The simulation results show that Raptor code with BCH code as a precoder improves the network lifetime over Raptor code alongside LDPC (Low Density Parity Check) code as a precoder by 88.24%.

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What this paper is about

This paper has explored the energy efficiency of Raptor codes; a first known class of fountain codes in an energy constrained network. Transmission power is adjusted dynamically to overcome unreliability over lossy links in wireless sensor network. One of the most felicitous key for this reliability issue is using Forward Error Correction (FEC) codes. This paper investigates the energy bagged by one such FEC code called Raptor codes in the Binary Erasure Channel (BEC) scenario. The performance analysis of Raptor codes in terms of energy by varying its precoder is carried out. The network parameters such as Bit Error Rate (BER), Throughput and Energy Spent per Bit are considered for the study. The simulation results show that Raptor code with BCH code as a precoder improves the network lifetime over Raptor code alongside LDPC (Low Density Parity Check) code as a precoder by 88.24%.

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Available abstract

This paper has explored the energy efficiency of Raptor codes; a first known class of fountain codes in an energy constrained network. Transmission power is adjusted dynamically to overcome unreliability over lossy links in wireless sensor network. One of the most felicitous key for this reliability issue is using Forward Error Correction (FEC) codes. This paper investigates the energy bagged by one such FEC code called Raptor codes in the Binary Erasure Channel (BEC) scenario. The performance analysis of Raptor codes in terms of energy by varying its precoder is carried out. The network parameters such as Bit Error Rate (BER), Throughput and Energy Spent per Bit are considered for the study. The simulation results show that Raptor code with BCH code as a precoder improves the network lifetime over Raptor code alongside LDPC (Low Density Parity Check) code as a precoder by 88.24%.

Key concepts: Raptor code, Fountain code, Computer science, BCH code, Forward error correction, Low-density parity-check code, Luby transform code, Tornado code

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