Adaptive threshold to mitigate the effect of cross-modulation interference and synchronization errors in energy detection PPM UWB systems
In conventional energy detection (ED) pulse position modulation (PPM) systems, the optimal decision threshold is 0. However, when cross-modulation interference (CMI) or synchronisation errors occur, the optimal threshold deviates from 0 and the bit error rate (BER) performance is degraded greatly. An adaptive threshold is developed to replace 0 threshold to find the optimal threshold. The research results show that this adaptive threshold effectively mitigates the effect of cross modulation interference (CMI) or synchronisation errors and achieves BER improvement.
Cui, Song and Xiong, Fuqin, "Adaptive threshold to mitigate the effect of cross-modulation interference and synchronization errors in energy detection PPM UWB systems" (2012). Electrical Engineering & Computer Science Faculty Publications. 315.