NDLI: Synchronization sensitivity of block-IFDMA systems

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Synchronization sensitivity of block-IFDMA systems

Content Provider	IEEE Xplore Digital Library
Author	Simon, E.P. Gaillot, D.P. Degardin, V.
Copyright Year	2002
Abstract	In this paper, we present a comprehensive study of the performance of a new model of DFT-precoded OFDMA with block-interleaved subcarrier allocation: B-IFDMA. The impact of the phase and timing jitter on the performance degradation for the two variants of B-IFDMA, namely joint-DFT and added-signal B-IFDMA is studied. Theoretical expressions of the degradation are derived for the additive white Gaussian noise channel and are compared with classical multicarrier schemes (OFDMA, MC-CDMA). Numerical results with various jitter parameters are presented and discussed. For the maximum number of active users, which is the critical case, it is shown that the phase jitter affects the two B-IFDMA variants and the classical multicarrier schemes in a similar fashion. Also, our results demonstrate that the two B-IFDMA variants are more sensitive to timing jitter than classical multicarrier schemes for a small number of blocks. Additionally, the number of blocks allocated to each user is found critical to minimize the degradation that occurs when timing jitter is introduced, and, therefore, must be carefully chosen.
File Size	682539
File Format	PDF
ISSN	15361276
Volume Number	9
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency synchronization Degradation Timing jitter Additive white noise Signal processing algorithms Signal processing AWGN Signal to noise ratio Frequency domain analysis Frequency diversity B-IFDMA, OFDMA, synchronization, jitter
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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