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In this work we adopt an OFDMA like Multi-Carrier scheme for wireless sensor networks with the aim of improving the performance in the presence of intensive traffic load. To examine the MAC performance, a simple, yet accurate analytic model has been provided, validated by simulation results. We demonstrate that the proposed scheme can achieve better throughput under heavy offered traffic load, as...
An adaptive spreading code length technique is demonstrated which increases throughput performance and energy efficiency in Wireless Sensor Networks (WSN). Through experiment, it is shown that an optimum spreading code length can be achieved which maximises throughput while minimizing energy usage. To enable this optimization process, an accurate performance estimation model has been proposed and...
Many applications of sensor networks require batteries as the energy source, and hence critically rely on energy optimisation of sensor batteries. But as often neglected by the networking community, most batteries are non-ideal energy reservoirs and can exhibit battery recovery effect - the deliverable energy in batteries can be replenished per se, if left idling for sufficient duration. We made several...
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