Reliable wireless telephony using the 2.4 GHz ISM band: issues and solutions

We focus on key issues associated with ensuring the reliability of spread-spectrum communication systems in the 2.4 GHz ISM band. To this end, we present a characterization of the emissions from microwave ovens which are the most ubiquitous interference sources in this segment of the spectrum. Clarifying the nature of these interferers facilitates the development of deployment planning tools that take location specific interference levels into account in determining radio link feasibility and reliability. An understanding of the detailed structure in such interference also leads to optimism about the possibility of using interference cancellation techniques to mitigate their impact on wideband spread-spectrum communication systems operating in this ISM band