Power-line communication testbed through underdetermined blind source separation

Powerline communication has become interesting as a new choice of communication media by using OFDM in the Europe Internet application and using TDMA in power meters' reading in Japan mimicking the function of phone-line DSL. However, this raw copper media without hefty infrastructure investment such as the telephone twisted pair DSL has many challenges, because it was designed to transmit an electrical current that had isolated power grid with transformers, it has nothing that is suitable to convey data but it is everywhere in the last mile of connecting households. To make everything worse, the powerline is also easily interfered by unpredictable impulsive noise, background colored noise, and fatal attenuation of signal. Our goal is to take the US city grid power-line as a supplement to the concept of a single-user & multiple-sensor-broadcasting applications for security. To successfully communicate through the power-line for the household/stadium/subway/traffic-lights security application, e.g. separated video feds find themselves the single owner PC through the common household/stadium/subway/traffic-lights power-line, we develop and test an appropriate sparse coding, compression, & error correction to succeed the task with a limited bandwidth technique. In this paper we did not apply our "human sensory preserving compression code" but to concentrate on sparse coding BSS with the less-bandwidth-demanding audio signals. In this paper, we describe a detail model of the power-line topologies based on realistic powerline data, and quantify the error rates of transmitted data on the powerline in the cases when noise is presented in the channel.