Interference analysis of interleaved and localized mapping schemes in OFDMA system with Carrier Frequency Offset

Bilal Ranjha, M. I Sakib Chowdhury, Mohsen Kavehrad

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

In this paper, we analyze the effect of Carrier Frequency Offset (CFO) of multiple users on the SINR of a single user in OFDMA based uplink communication receiver. We have computed an explicit SINR expression for two types of mapping strategies used in uplink OFDMA systems namely Interleaved Frequency Division Multiple Access (IFDMA) and Localized Frequency Division Multiple Access (LFDMA). SINR expressions in case of carrier frequency offset correction are also computed. Using simulations, we have compared the total average interference due to different values of CFO's of multiple users for both mapping schemes. Simulation results also show that the average value of Inter-Carrier Interference (ICI) for localized mapping is higher than interleaved mapping while the average value of Multiuser Interference (MUI) is higher for interleaved mapping. Moreover, the average MUI for localized mapping is minimum at the center of the band and it increases as we move towards the band edges. We also observe a flat response for ICI and MUI for interleaved mapping.

Original languageEnglish (US)
Title of host publicationMILCOM 2012 - 2012 IEEE Military Communications Conference
DOIs
StatePublished - 2012
Event2012 IEEE Military Communications Conference, MILCOM 2012 - Orlando, FL, United States
Duration: Nov 1 2012Nov 1 2012

Other

Other2012 IEEE Military Communications Conference, MILCOM 2012
CountryUnited States
CityOrlando, FL
Period11/1/1211/1/12

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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    Ranjha, B., Chowdhury, M. I. S., & Kavehrad, M. (2012). Interference analysis of interleaved and localized mapping schemes in OFDMA system with Carrier Frequency Offset. In MILCOM 2012 - 2012 IEEE Military Communications Conference [6415778] https://doi.org/10.1109/MILCOM.2012.6415778