Performance analysis of multiband OFDM in a homogeneous Poisson field of generic interferers

This paper presents a generalized analysis of Multiband OFDM (MB-OFDM) Ultra Wideband (UWB) communication in the presence of generic or non-specific interference sources. The interference sources are assumed to be distributed in a two-dimensional space according to a homogeneous Poisson field. An aggregate interference is formed by the asynchronous operation of these sources. To provide a generalized analysis, the conventional Gaussian approximation is replaced by a method involving the moment generating function (MGF) of the signal-to-interference-plus-noise ratio (SINR) and Laplace transform to derive the exact expression for the probability density function (pdf) of the interference power. From this, overall expression for the bit error rate, BER, is derived based on the cases where band limited interference is present and otherwise. This resulting expression is valid equally for the first and next generation devices.