UltraWide Band Cognitive Pulse Shaping under Physical-Layer QoS Constraints

被引:4
作者
Biagi, Mauro [1 ]
Polli, Valentina [1 ]
机构
[1] Univ Rome, Dept Informat Elect & Telecommun Engn DIET, Fac Informat Engn Stat & Comp Sci, I-00184 Rome, Italy
关键词
IR-UWB; multipath faded channels; Parks-McClellan algorithm; synchronization; interference; spectral masks; cognitive; RADIO;
D O I
10.1109/TCOMM.2011.082011.090643
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Ultra Wide Band (UWB) communication systems operate in the frequency range between 0 and 10.6 GHz so they induce the Scientific Community to solve the problem of coexistence with concurrent telecommunication services. This is the leading reason why both the Federal Communications Commission (FCC) and the European Telecommunications Standards Institute (ETSI) gave strict indications about the spectral limits to be respected and require the transmitter and receiver to be compliant with these spectral masks. To this end, it is mandatory to carefully shape the UWB pulse, for this can be accurately designed so as to avoid severe performance reduction while guarding inter-systems coexistence. The UWB technology and, more, the pulse shaping allow to apply the cognitive paradigm where the transmitter and receiver are the actors of this functionality since the performance are tied to channel features and interference presence. The widespread choice of Gaussian-like pulses has proven, however, largely suboptimal from a power emission point of view since they fail to optimize performance. Goal of this contribution is to show how to achieve a good compromise between spectral emission, rate and synchronization errors robustness, via a modified version of the Parks-McClellan method, considering channel impairments due to its frequency-selective nature and to the inter-pulse interference.
引用
收藏
页码:3167 / 3176
页数:10
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