Sileh, Ibrahim Khalil and Xiang, Wei and Alajel, Khalid Mohamed (2012) Outage probability of unequal block-based OFDM amplify-and-forward relay protocol over wideband channels. In: 12th International Symposium on Communications and Information Technologies (ISCIT 2012), 2-5 Oct 2012, Gold Coast, Australia.
Abstract
In this paper, we consider a dual-hop multiplerelay 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 blockbased 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.
|
Statistics for this ePrint Item |
| Item Type: | Conference or Workshop Item (Commonwealth Reporting Category E) (Paper) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Permanent restricted access to published version due to publisher copyright policy. |
| Faculty / Department / School: | Historic - Faculty of Engineering and Surveying - Department of Electrical, Electronic and Computer Engineering |
| Date Deposited: | 04 Jan 2013 00:27 |
| Last Modified: | 27 Aug 2014 04:36 |
| Uncontrolled Keywords: | OFDM; outage probability; selective relaying |
| Fields of Research : | 08 Information and Computing Sciences > 0805 Distributed Computing > 080503 Networking and Communications 10 Technology > 1005 Communications Technologies > 100503 Computer Communications Networks 09 Engineering > 0906 Electrical and Electronic Engineering > 090609 Signal Processing |
| Socio-Economic Objective: | E Expanding Knowledge > 97 Expanding Knowledge > 970108 Expanding Knowledge in the Information and Computing Sciences |
| Identification Number or DOI: | 10.1109/ISCIT.2012.6380970 |
| URI: | http://eprints.usq.edu.au/id/eprint/22509 |
Actions (login required)
 |
Archive Repository Staff Only |