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In this paper, Decision-Directed adaptive detection scheme based on Normalised Least Mean-Square (DD/NLMS) principles is proposed and investigated for the hybrid Direct-Sequence Time-Hopping Ultra-Wide Bandwidth (DS-TH UWB) system. The Bit-Error-Rate (BER) performance of the hybrid DS-TH UWB system is investigated when communicating over the UWB channels modelled by the Saleh-Valenzuela (S-V) channel model. Since both the pure DS-UWB and pure TH-UWB constitute special examples of the hybrid DS-TH UWB, their BER performance is also investigated in this contribution for sake of comparison with that of the hybrid DS-TH UWB.
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