Abstract
In this contribution 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 ultrawide 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. Our study and simulation results show that the DD/NLMS-aided adaptive detection constitutes a feasible detection scheme for practical DS-, TH- or hybrid DS-TH UWB systems. With the aid of a training sequence of reasonable length, our study shows that the considered UWB schemes are capable of achieving the BER performance that is close to that achieved by the minimum mean-square error (MMSE) detector with perfect channel knowledge. Furthermore, the DD adaptive techniques may be employed by UWB systems in order to improve their spectral-efficiency.
Original language | English |
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Title of host publication | The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall |
Number of pages | 5 |
DOIs | |
Publication status | Published - 1 Dec 2008 |
Externally published | Yes |
Event | 68th Semi-Annual IEEE Vehicular Technology Conference - Calgary, Canada Duration: 21 Sep 2008 → 24 Sep 2008 Conference number: 68 |
Conference
Conference | 68th Semi-Annual IEEE Vehicular Technology Conference |
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Abbreviated title | VTC 2008-Fall |
Country/Territory | Canada |
City | Calgary |
Period | 21/09/08 → 24/09/08 |