Impact of Ultra Wide Band emission on WiMAX systems at 2.5 and 3.5 GHz

In this work, results of an analytical analysis to assess the effect of Ultra Wide Band (UWB) emissions on the Worldwide Interoperability for Microwave Access system (WiMAX) are presented. The WiMAX range is evaluated with and without the UWB interference. Free space propagation model is used to calculate the UWB signal power that interferes with WiMAX systems. It is shown that, for the case of single UWB transmitter, WiMAX system can easily tolerate UWB interference when the UWB EIRP is -83dBm/MHz or less for a distance between the UWB transmitter and the WiMAX receiver of 1m or higher at 3.5GHz frequency in order to have only 5% range reduction. To make this possible, multi band UWB should not transmit in the first and the second bands. This will have a detrimental effect on UWB technology. For 2.5GHz WiMAX, the range reduction will be 5% when the UWB EIRP is -87dBm/MHz.

[1]  B.T. Ahmed,et al.  On the Impact of Ultra-Wideband (UWB) on Macrocell Downlink of UMTS and CDMA-450 Systems , 2008, IEEE Transactions on Electromagnetic Compatibility.

[2]  Romeo Giuliano,et al.  On the interference between UMTS and UWB systems , 2003, IEEE Conference on Ultra Wideband Systems and Technologies, 2003.

[3]  Lutz H.-J. Lampe,et al.  Impact of WiMAX interference on MB-OFDM UWB systems: analysis and mitigation , 2009, IEEE Transactions on Communications.

[4]  Chia-Chin Chong,et al.  A Comprehensive Standardized Model for Ultrawideband Propagation Channels , 2006, IEEE Transactions on Antennas and Propagation.

[5]  Robert W. Brodersen,et al.  Detect and avoid: an ultra-wideband/WiMAX coexistence mechanism [Topics in Radio Communications] , 2007, IEEE Communications Magazine.

[6]  Ángel G. Andrade,et al.  Evaluation of UWB Interference at WiMax Systems Based on a Generalized Pulse Waveform , 2009, 2009 International Conference on Electrical, Communications, and Computers.

[7]  Jeffrey G. Andrews,et al.  Fundamentals of WiMAX: Understanding Broadband Wireless Networking , 2007 .

[8]  Matti Latva-aho,et al.  On the UWB system coexistence with GSM900, UMTS/WCDMA, and GPS , 2002, IEEE J. Sel. Areas Commun..

[9]  J. Iinatti,et al.  In-band interference power caused by different kinds of UWB signals at UMTS/WCDMA frequency bands , 2001, Proceedings RAWCON 2001. 2001 IEEE Radio and Wireless Conference (Cat.No.01EX514).

[10]  Lutz H.-J. Lampe,et al.  Performance of BICM-OFDM systems in UWB interference , 2009, IEEE Transactions on Wireless Communications.

[11]  Abolfazl Mehbodniya,et al.  Effects of MB-OFDM System Interference on the Performance of DS-UWB , 2009, IEEE Transactions on Vehicular Technology.

[12]  Jeffrey G. Andrews,et al.  Fundamentals of WiMAX: Understanding Broadband Wireless Networking (Prentice Hall Communications Engineering and Emerging Technologies Series) , 2007 .

[13]  Rajesh Thakare.  Evaluation of UWB Interference on WiMAX , 2011 .

[14]  J. Iinatti,et al.  UWB coexistence with IEEE 802.11a and UMTS in modified Saleh-Valenzuela channel , 2004, 2004 International Workshop on Ultra Wideband Systems Joint with Conference on Ultra Wideband Systems and Technologies. Joint UWBST & IWUWBS 2004 (IEEE Cat. No.04EX812).

[15]  Matti Latva-aho,et al.  In-band interference of three kinds of UWB signals in GPS L1 band and GSM900 uplink band , 2001, 12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598).

[16]  Amitabh Kumar.  Mobile Broadcasting with WiMAX: Principles, Technology, and Applications , 2008 .