Interference avoidance in wireless systems
Wireless system designers have always had contend with interference from both natural sources and other users of the medium. Thus, the classical wireless communications design cycle has consisted of measuring or predicting channel impairments, choosing a modulation method, signal pre-conditioning at the transmitter and processing at the receiver to reliably reconstruct the transmitted information. These methods have evolved from simple (like FM and pre-emphasis) to relatively complex (like CDMA and adaptive equalization). However, all share a common attribute – once the modulation method is chosen, it is difficult to change. For example, an ASK system cannot be simply modified to obtain a PSK system owing to the complexities of the transmission and reception hardware.
KeywordsAccess Point Wireless System Code Word CDMA System Autocorrelation Matrix
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- 1.Special issue on software radio. IEEE Personal Communications Magazine, 6(4), August 1999. Editors: K-C. Chen and R. Prasad and H.V. PoorGoogle Scholar
- 2.S. Ulukus, Power Control, Multiuser Detection and Interference Avoidance in CDMA Systems, Ph.D. thesis, RutgersUniv., Dept. Electrical and Computer Engineering, 1998 (thesis director: Prof. R. D. Yates)Google Scholar
- 3.C. Rose, S. Ulukus, and R. Yates, Wireless systems and interference avoidance, IEEE Trans. Wireless Communication1(3): (July2002).preprint available at http://steph.rutgers.edu/ crose/ papers/ avoid17.ps
- 4.C. Rose, S. Ulukus, and R. Yates. Wireless Systems and Interference Avoidance. IEEE Journal on Selected Areas in Communications, 2001. http://steph.rutgers.edu/crose/papers/ avoid16.ps
- 5.H. Liuetal.,”Capacity Analysis of cellular Data System with 3G/WLAN I Interworking”, in Proceedings of IEEE Vehicular Technology Conference, fall 2003Google Scholar
- 6.O.Yilmaz, “Access Selection in Cellular and WLAN Multi-Access Networks”, Master Thesis, Royal Institute of Technology, Sweden, February2003, available at www.s3.kth.se/radio