Non-coherent detection for cooperative OFDM-based system over time-varying fading channels

Sara Al Maeeni, Sami Muhaidat, Ibrahim Abualhaol

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, we investigate a non-coherent detection recursive scheme for a multi-relay cooperative orthogonal frequency division multiplexing (C-OFDM) wireless system. We consider a distributed space-time block code (STBC) system over time-varying fading channels, in which source-relay, relay-destination, and source-destination links experience different Doppler spreads. The cooperative diversity scheme is based on the amplify-and-forward (AaF) protocol and the decoding algorithm is derived based on the generalized maximum likelihood sequence estimation (GMLSE). We show that our proposed decoder allows recursive implementation, that does not require any channel state information (CSI). Simulation results demonstrate that the recursive decoder achieves sufficient results even under quasi-static fading assumption. The bit error rate (BER) performance of the proposed scheme over time-varying channel, exhibits near quasi-static channel performance at low to medium signal-to-noise ratio (SNR). Using the assistance of 5 relays and under particular assumptions, the gain advantage is almost 5 dB.

Original languageBritish English
Title of host publication2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages197-200
Number of pages4
ISBN (Print)9781479924523
DOIs
StatePublished - 2013
Event2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013 - Abu Dhabi, United Arab Emirates
Duration: 8 Dec 201311 Dec 2013

Publication series

NameProceedings of the IEEE International Conference on Electronics, Circuits, and Systems

Conference

Conference2013 IEEE 20th International Conference on Electronics, Circuits, and Systems, ICECS 2013
Country/TerritoryUnited Arab Emirates
CityAbu Dhabi
Period8/12/1311/12/13

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