Physical‐layer transceiving techniques on data‐aided orthogonal frequency‐division multiplexing towards seamless service on vehicular communications | Zendy

Lin ChiSheng | Zendy; Lin JiaChin | Zendy

Open Access

Physical‐layer transceiving techniques on data‐aided orthogonal frequency‐division multiplexing towards seamless service on vehicular communications

Author(s) -

Lin ChiSheng,

Lin JiaChin

Publication year - 2013

Publication title -

iet communications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.355

H-Index - 62

eISSN - 1751-8636

pISSN - 1751-8628

DOI - 10.1049/iet-com.2012.0348

Subject(s) - computer science , physical layer , orthogonal frequency division multiplexing , computer network , service layer , division (mathematics) , data as a service , multiplexing , telecommunications , service (business) , quality of service , wireless , business , mathematics , channel (broadcasting) , arithmetic , marketing

Frequency error, non‐ideal channel estimation (CE) and inefficient seamless road side unit (RSU) service are critical issues occurring in conventional systems that are completely specified by current IEEE 802.11p standards. This study investigates novel techniques for achieving accurate frequency offset compensation and effective CE and RSU selection for handover in signal‐overlapping areas. Recently, communications using data‐aided orthogonal frequency‐division multiplexing (DA‐OFDM), such as pseudo‐random‐postfix OFDM and time‐domain‐synchronous OFDM (TDS‐OFDM), have been actively studied because of their higher effectiveness, efficiency and better transmission quality. This study consists of three parts: (i) derivation of the maximum likelihood estimation for DA‐OFDM, (ii) design of an accurate RSU selection scheme and (iii) implementation of a superior TD CE technique. Performance comparisons between the conventional and the proposed techniques are conducted through comprehensive computer simulations.

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