Title :
Acquisition of spread spectrum codes with consecutive correlator outputs in the presence of fractional Doppler frequency offset
Author :
Lee, Seong Ro ; Kang, Hyun Gu ; An, Taehun ; Jeong, Min A. ; Kim, Yun Hee ; Song, Iickho ; Yoon, Seokho
Author_Institution :
Mokpo Nat. Univ., South Korea
Abstract :
A novel code acquisition scheme is proposed for the acquisition in time of spread spectrum codes in the presence of fractional Doppler frequency offset (FDFO). In the proposed acquisition scheme, the decision variable for detection is formed by combining two consecutive correlator outputs so that the influence of the reduction in the correlation peak due to the FDFO can be alleviated. Numerical results show that the proposed acquisition scheme can offer better mean-time-to-synchronization performance than the conventional scheme based on the cell-by-cell detection.
Keywords :
Doppler effect; correlators; decision theory; signal detection; spread spectrum communication; code acquisition scheme; consecutive correlator output; decision variable; fractional Doppler frequency offset; spread spectrum communication; Code standards; Correlators; Detectors; Frequency synchronization; Global Positioning System; Hardware; Signal processing; Spread spectrum communication; Transmitters; Uncertainty;
Conference_Titel :
Communications, Computers and Signal Processing, 2009. PacRim 2009. IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4244-4560-8
Electronic_ISBN :
978-1-4244-4561-5
DOI :
10.1109/PACRIM.2009.5291320
