naa a22 4500 510798756 CHVBK 20180411083346.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11277-013-1168-y doi (NATIONALLICENCE)springer-10.1007/s11277-013-1168-y Novel Finite Summation Expressions for Total Interference Power due to Carrier Frequency Offset in Uplink Multiuser OFDM Systems [Elektronische Daten] [Porselvi Soundararajan, Vidhyacharan Bhaskar] Carrier Frequency Offset which poses adverse threats in uplink Multiuser OFDM systems induces Inter-Carrier Interference (ICI) and Multiuser Interference (MUI). It is very essential that the power of ICI and MUI is calculated precisely. In previous work, the total interference power was presented in an indefinite integral form or as an infinite series. Further, an ideal channel was the scenario under consideration in earlier work. In this paper, novel finite summation expressions for power of ICI and MUI are derived over slowly fading channels which make the calculation of total interference simpler for any number of users by just specifying the total number of users and the number of subcarriers allotted for each user. Based on the mean of the dominant signal and the total interference power experienced in the system, closed-form expressions for mean and variance of the desired signal in uplink multiuser OFDM system are obtained which provide an idea of the strength of the desired signal. Finite-sum expressions for the total interference power, and closed-form expressions for mean and variance of the desired signal under Rayleigh, Weibull and Nakagami fading channels are derived and plotted from which the response of the system can be understood perfectly. Springer Science+Business Media New York, 2013 Inter-Carrier Interference (ICI) nationallicence Multiuser Interference (MUI) nationallicence Total Interference (TI) nationallicence Symbol to Interference Ratio (SIR) nationallicence Carrier-to-Interference power Ratio (CIR) nationallicence Cyclic Prefix (CP) nationallicence Soundararajan Porselvi Department of Electronics and Communication Engineering, SRM University, Kattankulathur, 603203, Kancheepuram Dt., Tamilnadu, India aut Bhaskar Vidhyacharan Department of Electronics and Communication Engineering, SRM University, Kattankulathur, 603203, Kancheepuram Dt., Tamilnadu, India aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2587-2604 0929-6212 72:4<2587 2013 72 11277 https://doi.org/10.1007/s11277-013-1168-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1168-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Soundararajan Porselvi Department of Electronics and Communication Engineering, SRM University, Kattankulathur, 603203, Kancheepuram Dt., Tamilnadu, India aut NATIONALLICENCE 700 1- Bhaskar Vidhyacharan Department of Electronics and Communication Engineering, SRM University, Kattankulathur, 603203, Kancheepuram Dt., Tamilnadu, India aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2587-2604 0929-6212 72:4<2587 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer