Institution of Engineering and Technology;Stevenage: The Institution of Engineering and Technology
摘要:
摘要： 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. 出版者： Stevenage: The Institution of Engineering and Technology 出版日期： 2013-05 出處： IET communications, 2013-05, Vol.7 (8), p.721-730 資源來源： Wiley Online Library Open Access 版權： The Institution of Engineering and Technology 版權： 2021 The Institution of Engineering and Technology 版權： Copyright The Institution of Engineering & Technology May 2013 識別號： ISSN: 1751-8628 識別號： ISSN: 1751-8636 識別號： EISSN: 1751-8636 識別號： DOI: 10.1049/iet-com.2012.0348
