This Phase I program proposes to develop the appropriate design rules so that we can model and predict the behavior of both ePALS and traditional eTextile networks across typical soldier training and operational environments, including the ability to design for specific impedance, shielding and power handling requirements and the ability environments. To account for the impact of local environment challenges and artifacts, we will look to model and test humidity, bending, stretching, proximity to metals (ammo magazines, radios, hydration packs, etc.) and harsh electronic environments (MIL-STD_461, etc.). We are teaming with Georgia Institute of Tech (Georgia Tech) to leverage the extensive modeling, simulation and testing that they have experience with specifically in the eTextile area. Lead by Prof. Suresh Sitaraman, they have developed design and performance models for a wide array of wearable electronics products including Polar Hear Rate Monitors and Zephyr Biogarments. The Georgia Tech team boasts an impressive range of technical disciplines (electrical, mechanical, software, modeling & simulation, testing & characterization) and equipment/facilities making them a very credible and capable partner to help develop these critical design rules.