No abstract

No abstract

No abstract

The effect of UWB interference on a been investigated thoroughly in the literature [2] [3] [4] but WiMax system operating in the 3.5 GHz frequency the impact of UWB interference on WiMax systems has band has been addressed in this paper. The possible not been explored large enough. In [2] the coexistence impact on WiMax performance is still a topical problem of UWB with Fixed Wideband Access (FWA) has been even though the European regulation bodies have paida much attention to the coexistence issue between these analysed by means of a mitigation technique when distwo systems. On the other hand WiMax industries tances between FWA receiver and UWB transmitter were claimed that UWB can pose a harmful threat to their regarded from 200 m to 3 km. In [1], the performance user's terminals if UWB devices are located in very of WiMax receiver in presence of DS-UWB system has close proximity less than 1 meter. Hence, UWB may be sied; te aggregatie rceiedUntererece owe need to scarify their 3.5 GHz channel or implement b some suitable mitigation techniques to keep the channel by the victim receiver was calculated and compared with alive. In this paper, the WiMax receiver characteristics the receiver interference threshold level. It was shown that have been studied by means of the noise floor, sen-DS-UWB system interference will not have a harmful effect sitivity level and some interference criteria. Also the on the performance of a WiMax receiver. In [3] FWA copossible impacts on their cell coverage and on outage are computed. It is shown that UWB transmit power band interference from UWB hot-spot has been examined interference will not have a destructive effect on the but some of its parameters like system bandwidth, Noise performance of a WiMax receiver. Figure (NF), etc. have not satisfied the demand required Index Terms UWB, WiMax, UWB Regulation, Co-by ECC TG3 group to move further on their ongoing existence.regulation process. In this paper we have calculated the realistic cell radius by considering the Cell Edge Reliability I. INTRODUCTION (CER) and the practical system parameters. Then the Ultra wideband wireless technologies have received a reduction of cell radius because of potential interference large amount of interest for the deployment in a very broad impact on the WiMax service was computed. In addition, range of applications ranging from computer peripheral the outage of active users was estimated with applying the integration over wireless USB and home multimedia with tolerable noise raise factor of 1 dB, 2 dB and 3 dB. high data rate communication systems. As a base for the deployment of this new innovative wireless technology, II. WIMAX RECEIVER AND INTERFERENCE a worldwide regulatory framework is needed in order to CHARACTERISTICS guarantee the smooth coexistence of the underlay UWB At the early stage of the coexistence studies, the victim technology with existing incumbent and future services receiver characteristics (e.g. noise floor, receiver sensitivity, sharing the same frequency bands. Since U...

No abstract