Title :
On the use of double correlation for frame synchronization in the presence of frequency offset
Author :
Choi, Zae Yong ; Lee, Yong Hoon
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
A new frame synchronization technique, which is robust to carrier frequency and phase errors, is proposed for M-ary PSK systems. This technique is derived through some modification of the procedure for obtaining the maximum likelihood (ML) rule in Gansmann et al. (1997). The proposed rule is based on an operation called double correlation, which evaluates the correlation after properly multiplying the received signal with a sync pattern. It is shown through computer simulation that the proposed rule outperforms the existing ML rule when the frequency offset is greater than about 0.02/T
Keywords :
AWGN channels; correlation methods; maximum likelihood estimation; quadrature phase shift keying; synchronisation; M-ary PSK systems; QPSK; carrier frequency; double correlation; frame synchronization; frequency offset; maximum likelihood; phase errors; received signal; sync pattern; Additive white noise; Computer simulation; Constellation diagram; Digital communication; Frequency estimation; Frequency synchronization; Phase estimation; Phase shift keying; Robustness; Timing;
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
DOI :
10.1109/ICC.1999.765415
