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A time-domain control signal detection technique for OFDM

Adegbite, Saheed A. and McMeekin, Scott G. and Stewart, Brian G. (2016) A time-domain control signal detection technique for OFDM. EURASIP Journal on Wireless Communications and Networking, 2016. ISSN 1687-1472

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Abstract

Transmission of system-critical control information plays a key role in efficient management of limited wireless network resources and successful reception of payload data information. This paper uses an orthogonal frequency division multiplexing (OFDM) architecture to investigate the detection performance of a time-domain approach used to detect deterministic control signalling information. It considers a type of control information chosen from a finite set of information, which is known at both transmitting and receiving wireless terminals. Unlike the maximum likelihood (ML) estimation method, which is often used, the time-domain detection technique requires no channel estimation and no pilots as it uses a form of time-domain correlation as the means of detection. Results show that when compared with the ML method, the time-domain approach improves detection performance even in the presence of synchronisation error caused by carrier frequency offset.