This paper investigates and compares the performance of various ultrawide bandwidth (UWB) systems when communicating over Nakagami-m fading channels. Specifically, the directsequence (DS), time-hopping (TH) and hybrid direct-sequence time-hopping (DS-TH) UWB systems are considered. The performance of these UWB systems is studied, when using the conventional single-user correlation detector or the minimum mean-square error (MMSE) multiuser detector. Our simulation results show that the hybrid DS-TH UWB system may outperform a corresponding pure TH-UWB or pure DS-UWB system in terms of the achievable error performance. Given the total spreading gain of the hybrid DS-TH UWB system, there is an optimal setting of the TH spreading factor and DS spreading factor, which results in the best error performance.
|Title of host publication||18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07|
|Number of pages||5|
|Publication status||Published - 1 Dec 2007|
|Event||18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications - Athens, Greece|
Duration: 3 Sep 2007 → 7 Sep 2007
|Conference||18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications|
|Period||3/09/07 → 7/09/07|