NDLI: Outage probability of unequal block-based OFDM Amplify-and-Forward relay protocol over wideband channels

Content Provider	IEEE Xplore Digital Library
Author	Sileh, I.K. Wei Xiang Alajel, K.M.
Copyright Year	2012
Description	Author affiliation: University of Southern Queensland, Toowoomba, 4350, Australia (Sileh, I.K.; Wei Xiang; Alajel, K.M.)
Abstract	In this paper, we consider a dual-hop multiple-relay network with orthogonal frequency division multiplexing (OFDM) based Amplify-and-Forward (AF) relay protocol over frequency-selective channels. In practice, subcarriers suffered that suffer deep fade in one relay may have good channels available for another relay. Therefore, each relay can support a different number of subcarriers. We propose an unequal block-based OFDM-AF relaying scheme. In our scheme, an OFDM symbol is divided into unequal blocks of subcarriers at its destination. The destination assigns each relay a corresponding number of subcarriers depending on the signal-to-noise ratio (SNR) of the signals. We derive a closed form expression of the probability of outage and this gives the general expression for our protocol and selective OFDM, OFDMA, and block-OFDM schemes. results show that the scheme achieves a better performance for a given number of blocks than the selective block-OFDM protocol.
Starting Page	599
Ending Page	603
File Size	390292
Page Count	5
File Format	PDF
ISBN	9781467311564
e-ISBN	9781467311571
e-ISBN	9781467311557
DOI	10.1109/ISCIT.2012.6380970
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-02
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless communication Fading Protocols outage probability OFDM Simulation selective relaying Relays Signal to noise ratio
Content Type	Text
Resource Type	Article

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