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Pham Hong Lien1, Nguyen Duy Lai2, An Algorithm Combining Synchronization and Channel Estimation for OFDM Systems (2010), Journal on Information Technologies and Communications - Research, Development and Application on Information and Telecommunication Technology, Volume E-1, Number 2 (6), pp: 26 - 34

1Electrical and Electronics Engineering Faculty, Ton Duc Thang University, Vietnam

2Electrical and Electronics Engineering Faculty, Ho Chi Minh City University of Transport, Vietnam

Abstract: OFDM(Orthogonal Frequency Division Multiplexing) is more and more popular in applications of digital communicationsbecause oftheeffective spectrum andlessimpacts of multipath fading. However, beside these advantages, OFDM signals are destroyed easily by errors such as CFO (Carrier Frequency Offset), SFO (Sampling Clock Frequency Offset). Thus, it's necessary to have robustly offset algorithms to overcome these disadvantages. Studies about OFDMwe justexamined channel estimation with assumptions that synchronization is perfect, and vice versa. However, theyhave aclose relationship, channel estimation can be restricted if synchronization is bad, and vice versa.This paper presents an algorithm combining synchronization and channel estimation in OFDM systems. The algorithm is compared with other proposed algorithms by simulation.The simulation result of the algorithmcombining synchronization and channel estimationis close to that of ideal conditions: perfect channel estimation and synchronization.