GEN01-1: A Wide Band Modem Based on Impulse Modulation and Frequency Domain Signal Processing for Powerline Communication

We describe a powerline (PL) communication system that deploys wide band impulse modulation combined with direct sequence code division multiple access (DS-CDMA) to obtain a form of orthogonal modulation, and to allow for user multiplexing. Several novel frequency domain (FD) detection algorithms are proposed. They all have the capability of canceling the inter-code interference (ICI) and the multiple access interference (MAI) that is generated by the frequency selective PL channel. Practical estimation of the channel, and mitigation of impulse noise is also addressed. When channel coding is used, we also show that iterative techniques with feedback from the decoder better the channel estimation and detection performance. Simulation results prove that the scheme achieves high data rates in a PL channel in the presence of impulsive noise and MAI.