The Tracking Range of CFO Tracking Algorithm Based on Signal Reconstruction for OFDM

doi:10.13190/jbupt.200502.80.zhenglb

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2005, Vol. 28 ›› Issue (2): 80-83.doi: 10.13190/jbupt.200502.80.zhenglb

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The Tracking Range of CFO Tracking Algorithm Based on Signal Reconstruction for OFDM

ZHENG Laibo1,2,HU Jiandong1

1.School of Telecommunication Engineering, Beijing University of Postsand Telecommunications, Beijing 100876, China; 2.Information Science and Engineering School, Shandong University, Ji'nan 250100, China

Online:2005-04-28 Published:2005-04-28

Abstract

Abstract: The tracking range of a carrier frequency offset (CFO) tracking algorithm for orthogonal frequency division multiplexing (OFDM) systems based on timedomain received signal reconstruction was investigated deeply. It is found that the tracking range of this algorithm is not fixed. Analyses show the decision error is the main factor that affects the timedomain signal re construction accuracy and the tracking range, while the decision error is affected by subcarrier modulation scheme, subcarrier number, additive white Gaussin noise and channel estimate error, so dose the tracking range. We find that subcarrier modulation scheme and subcarrier number are main factors that affect the tracking range. The tracking range at different carrier numbers applying BPSK and 16QAM modulation scheme respectively on subcarriers are determined by simulation.

Key words: OFDM systems, carrier frequency offset, tracking

CLC Number:

TN911

ZHENG Laibo1,2,HU Jiandong1. The Tracking Range of CFO Tracking Algorithm Based on Signal Reconstruction for OFDM[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2005, 28(2): 80-83.

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The Tracking Range of CFO Tracking Algorithm Based on Signal Reconstruction for OFDM

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