Title :
Blind frequency offset estimation for PCC-OFDM with symbols overlapped in the time domain
Author :
Shentu, Jinwen ; Armstrong, Jean
Author_Institution :
Sch. of Electron. Eng., La Trobe Univ., Bundoora, Vic., Australia
Abstract :
This paper presents a blind frequency offset estimator for Polynomial Cancellation Coded Orthogonal Frequency Division Multiplexing (PCC-OFDM) signals with symbols overlapped in the time domain (Overlap PCC-OFDM). The estimation is carried out in the frequency domain. A frequency offset estimate is obtained by using a pair of demodulated subcarriers at the Discrete Fourier Transform (DFT) output. As no pilot tones are required for the estimation there is no loss in bandwidth efficiency. Simulations show that this estimator is an approximately lineal function of frequency offset and has low variance
Keywords :
OFDM modulation; discrete Fourier transforms; frequency estimation; Overlap PCC-OFDM; bandwidth efficiency; blind frequency offset estimation; discrete Fourier transform; frequency domain; overlapping symbols; polynomial cancellation coded orthogonal frequency division multiplexing; subcarrier demodulation; time domain; Bandwidth; Data communication; Demodulation; Discrete Fourier transforms; Frequency domain analysis; Frequency estimation; Linear approximation; OFDM modulation; Redundancy; Sampling methods;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.922301
