Energy-efficient transmission and bit allocation schemes in wireless sensor networks

• DOI: 10.1504/ijsnet.2012.047129
• Publication Date: 2012-06-03T11:14:38Z
• Authors: Xiaoxia Zhang; Liang Liang Xie; Xuemin Shen
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology; 7. Clean energy

Energy–efficient transmission and bit allocation schemes are investigated in multi–source single–sink Wireless Sensor Networks (WSNs). For over Additive White Gaussian Noise (AWGN) channels with path loss, this work shows that the overall energy consumption can be minimised if each sensor transmits minimum power cooperates others Time–Division Multiple Access (TDMA) mode. From efficient correlated source coding perspective, Slepian–Wolf theorem is applied. Jointly considering two aspects, we propose a closed form scheme to minimise consumption. The underlying idea assign more bits nodes better channel conditions. Additionally, based on definition of network lifetime as time before first fails, further maximise by developing heuristic algorithm balance among sensors. superiority proposed validated both analytical simulation results.