NDLI: Performance enhancement of OFDM non-regenerative Variable Gain relay systems

Content Provider	IEEE Xplore Digital Library
Author	Kocan, E. Pejanovic-Djurisic, M.
Copyright Year	2012
Description	Author affiliation: University of Montegro, Faculty of Electrical Engineering, Podgorica, Montenegro (Kocan, E.; Pejanovic-Djurisic, M.)
Abstract	In this paper the level of bit error rate (BER) performance enhancement achieved by subcarrier mapping (SCM) at the relay (R) station in dual-hop OFDM non-regenerative Variable Gain (VG) relay system, is examined. Closed form BER expressions are derived for the assumed M-QAM (M-ary Quadrature Amplitude Modulation) modulated system, in the case of Rayleigh fading channels on both hops, when two SCM schemes denoted as Best-to-Best SCM (BTB SCM) and Best-to-Worst SCM (BTW SCM) are implemented. The obtained results show that, for all the signal-to-noise ratio values of interest, the analyzed relay system with BTB SCM achieves better BER performance, or at least the BER performance equal to the case when BTW SCM scheme is implemented. Having in mind that BTB SCM scheme also maximizes the system capacity, it is shown that it can be considered as the optimal SCM scheme for the OFDM non-regenerative VG relay system.
Starting Page	1038
Ending Page	1041
File Size	383358
Page Count	4
File Format	PDF
ISBN	9781467307826
ISSN	21588473
e-ISBN	9781467307840
DOI	10.1109/MELCON.2012.6196605
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-25
Publisher Place	Tunisia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bit error rate Relays OFDM Signal to noise ratio Strontium Analytical models Fading
Content Type	Text
Resource Type	Article

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