UWB piconet interference suppression using clustered ternary orthogonal signaling scheme

This paper describes a transceiver design based on clustered ternary code sequences as a form of modulation in order to achieve good interference suppression with a low cost and low complexity implementation. The use of ternary code sequences allows for flexible receiver designs, so that the same transmitted signals can be detected by coherent, differential and non-coherent receivers. By applying cyclic-shifts on the base ternary code sequence, an inherent coding gain from orthogonal signaling can be achieved without any external channel coder. Our pulse-clustering proposal makes use of both time and code domains for greater SOP suppression than the pure time domain scheme commonly used in pulse position modulation (PPM). In addition, pulse-clustering transmission of ternary chips enables a low sampling rate at the receiver.