Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Uncertainty area-based interference mitigation for cognitive radio | Boutin et al. EURASIP Journal on Wireless Communications and Networking 2011 2011 175 EURASIP Journal on . http content 2011 1 175 Wireless Communications and Networking a SpringerOpen Journal RESEARCH Open Access Uncertainty area-based interference mitigation for cognitive radio Mathieu Boutin1 2 Charles L Despins1 2 3 and Tayeb A Denidni1 2 Abstract A new interference mitigation approach is presented for a Mobile Ad Hoc NETwork MANET acting as a secondary wireless network which takes advantage of smart antennas and cognitive radio capabilities when arbitrarily deployed in the same area as a primary wireless network while both sharing the same spectrum. The MANET has to cope with the very coarse probabilistic estimate of the primary network antenna location resulting from the absence of communication between both networks. Prior to MANET deployment a Monte Carlo simulation is performed to evaluate the MANET s potential aggregate interference. Thus both network managers have offline requirements to meet by such a simulation before approving their coexistence in the same environment. The adequate size of an uncertainty area surrounding each primary antenna to respect those requirements is therefore our main contribution to mitigate the MANET s interference. This is a novel solution for this kind of non-intrusive underlay spectrum sharing paradigm. Keywords cognitive radio interference estimation mobile ad hoc network probabilistic location radio coverage area smart antennas uncertainty area underlay paradigm wireless network coexistence 1. Introduction The rapid growth of electromagnetic radio-spectrum use has made this natural resource a rather scarce asset for different wireless networks deployed in overlapping areas. Acute bandwidth shortage is predicted in the near future by considering the frequency bands already assigned for various applications such as television broadcast cellular communications 1 etc. In contrast to this apparent .
