A unified approach to the unilateral bounds of interference performance

In wireless communication systems with high requirements of reliability, the bounds determine the range of the performance the systems or techniques can achieve which are the key criteria for system assessment. In this paper, a simple unified approach is proposed to evaluate the unilateral bounds of interference performance in wireless systems. The general method deals with a broad class of performance criteria related to average signal to interference and noise ratio (SINR), e.g. bit error rate (BER) and received quality (RxQual). The common access is flexibly applied in all kinds of modulation modes, various transmit power, regardless of single or multiple interferers in the case of envelop or power, and a mass of channel environments including the general Nakagami-m fading, log-normal shadowing and inverse power law path loss models. In addition, the concavo-convex property is also a key role in decision of whether the unilateral bounds are the lower bounds or the upper bounds. For the convex functions of SINR, the unified approach presents the upper bounds, and for the concave functions of SINR, the approach gives the lower bounds. Finally, the simulations are conducted for the approach applied to analyze the interference performance of Frequency Shift Keying (FSK) modulation in general channel models as examples.