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Sensors 2015, 15(10), 24771-24790; doi:10.3390/s151024771

The Applications of Decision-Level Data Fusion Techniques in the Field of Multiuser Detection for DS-UWB Systems

1
School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China
2
Shanghai Electro-Mechanical Engineering Institute, Shanghai 200245, China
*
Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 11 August 2015 / Revised: 17 September 2015 / Accepted: 18 September 2015 / Published: 25 September 2015
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [796 KB, uploaded 25 September 2015]   |  

Abstract

In this paper, the decision-level data fusion techniques are extended to the multiuser detection (MUD) field. Then two novel MUD algorithms, that is the chairman arbitrating decision-level fusion criterion (CA-DFC) based MUD algorithm and the veto logic decision-level fusion criterion (VL-DFC) based MUD algorithm, are proposed for DS-UWB communication systems. In CA-DFC based method, the chairman can make his arbitration among the preliminary decisions from sub-optimal detectors by his own rule. In the VL-DFC based method, the undetermined bits in these preliminary decisions are considered to construct a simplified solution space, and then the chairman can make his final decision within this space. Simulation results demonstrate that the performances of CA-DFC and VL-DFC based MUD algorithms are superior to those of other sub-optimal MUD algorithms, and even close to that of OMD. Moreover, both of these proposed algorithms have lower computational complexity than OMD, which reveals their efficiency. Compared with CA-DFC, VL-DFC based algorithm achieves a little improvement in its performance, at the cost of the increment in its computational complexity. Thus, they can be applied to different practical situations. View Full-Text
Keywords: data fusion; decision-level fusion criterion (DFC); multiuser detection (MUD); DS-UWB data fusion; decision-level fusion criterion (DFC); multiuser detection (MUD); DS-UWB
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Gu, Y.; Yang, M.; Shi, Z.; Wu, Z. The Applications of Decision-Level Data Fusion Techniques in the Field of Multiuser Detection for DS-UWB Systems. Sensors 2015, 15, 24771-24790.

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