Full length article: An iterative interference cancellation method for co-channel multicarrier and narrowband systems

Authors:
Mustafa E. ŞAhin;Ismail Guvenc;HüSeyin Arslan
Affiliations:
Electrical Engineering Department, University of South Florida, 4202 E. Fowler Ave., ENB-118, Tampa, FL, 33620, United States;DOCOMO Communications Laboratories USA, Inc., 3240 Hillview Avenue, Palo Alto, CA, 94304, United States;Electrical Engineering Department, University of South Florida, 4202 E. Fowler Ave., ENB-118, Tampa, FL, 33620, United States
Venue:
Physical Communication
Year:
2011

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Abstract

Coexistence of narrowband (NB) and multicarrier technologies will be a major concern in next generation wireless communication systems due to the co-channel interference (CCI) problem. In this paper, an efficient CCI cancellation method is proposed that may be utilized for improved coexistence of NB and multicarrier technologies. The method treats both co-channel signals as desired signals and enhances them in an iterative manner. In every iteration, the signals are demodulated, regenerated, and subtracted from the received signal successively in order to obtain a better estimate of the other co-channel signal. Computational complexity of the proposed method is compared in detail with the joint demodulation technique. Through computer simulations, it is shown that the proposed method has lower complexity compared to joint demodulation, and it yields significant gains in the symbol error rate (SER) performance of both the NB and multicarrier systems.