无线传感器网络码分复用方案性能分析

doi:10.3969/j.issn.1001-2400.2016.03.002

Abstract

Abstract:

In a wireless sensor network (WSN), multiple groups of source nodes communicate with their respective destination nodes with the help of a common relay network. To remove the inter-session interference among multiple transmission sessions at each destination in a wireless sensor network, a network code division multiplexing (NCDM) scheme is proposed for the parallel session model. The fundamental of the NCDM scheme takes advantage of the property of the low-density generator matrix (LDGM) code to calculate the equivalent received signal. Then the NCDM scheme is analyzed. Based on the analysis of the soft processing, a new code design criterion for the construction of the generator matrix is developed. Simulation results show that by following the proposed code design criterion, the bit error ratio (BER) performance gap between the scheme we studied and the serial session scheme can be managed effectively.

Key words: wireless sensor network, network code division multiplexing, soft processing algorithm, log-likelihood ratio, bit error ratio

CLC Number:

TN929.5

YUE Jing;BAI Baoming. Performance analysis of network code division multiplexing over wireless sensor networks[J].Journal of Xidian University, 2016, 43(3): 6-12.

References

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(2016, Vol.43, No.3, 6-12)

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Performance analysis of network code division multiplexing over wireless sensor networks

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