EE_SP_Mitigation of RFI in Ad Hoc Wireless Receiver Nodes

The Ad-hoc wireless networks are assuming great importance because of the ease of operation and their operation without any infrastructure. On the other hand, it has its own characteristics like operation from low-capacity battery, frequent change of routing and connectivity etc.. Bit Error Rate (BER) of any wireless data network is critically dependent on the signal to noise and distortion(SINAD) ratio or signal to noise ratio(SNR) or signal to interference ratio(SIR) parameters of a receiver. The degradation in receiver performance can be made up theoretically by boosting the transmitter power level but the maximum power level is also highly regulated. Consequently, solution by reducing the interference is more relevant for Ad-hoc nodes. In this paper, we have analyzed one of the most critical internal radio interference factor of a receiver and have tried some circuits successfully to reduce or remove the difficult-to-remove interference problem of such receivers.