A novel frequency-domain channel parameters estimation method by time-domain pilots inserting for OFDM systems

Authors:
Tao Chen;Min Wang;Yong Fang
Affiliations:
School of Communication and Infonnation Engineering, the Key Lab of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai, China;School of Communication and Infonnation Engineering, the Key Lab of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai, China;School of Communication and Infonnation Engineering, the Key Lab of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai, China
Venue:
ISWPC'09 Proceedings of the 4th international conference on Wireless pervasive computing
Year:
2009

Citing 2
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Abstract

A novel least square (LS) estimation method for frequency-domain channel parameters is proposed for orthogonal frequency division multiplexing (OFDM) systems. It inserts character pilots with constant envelops in time domain to avoid influencing the peak-to-average power ratio (PAPR) of systems caused by the inserted pilots. Moreover, it improves the estimation accuracy significantly with much lower computing complexity by designing the appropriate character pilots and the pilot multiplex format. Simulation results have demonstrated that the proposed algorithm is more effective than the conventional LS method for practical applications.