Embedded IWT evaluation in reconfigurable wireless sensor network

This paper presents the evaluation of a low complexity discrete wavelet transform for image compression in a critical scenario such as the wireless sensor network one. Due to the increasing interest towards the possibility of developing wireless networks of small sensors with embedded processing capabilities, IC designers have to face new challenges. In particular not only power consumption issues but also algorithm complexity can tackle sensors feasibility. Moreover, a remarkable degree of reconfigurability has to be granted to reach high flexibility. The analysis proposed in this paper is based on the development of a parametric IP mapped on different physical layers. The reported measures show that very interesting low-energy figures can be achieved on modern CPLD devices.