New approach to a DS-CDMA-UWB system using a pseudo orthogonal code (POC)

Ultra-Wideband Direct Sequences Code Division Multiple Access (DS-DMA) plays an important role in the case of multi-terminal multi-application communications UWB devices. In systems that exploit injection pulse itself directly to antenna hence very wide bandwidth, generation suitable DS-CDMA codes poses a real challenge. this paper we will describe our novel transmission which uses pseudo-orthogonal time code (POC) as sequences. The suggested are unipolar sequences with chips may be dynamically modified target certain number users or applications. Our approach bypasses modulations schemes commonly used on systems. Moreover, perspectives work, it would interesting realize new based FPGA circuit.