Title :
Searching Binary Sequences for Coded Excitation in Medical Ultrasound
Author :
Liu, Kai ; Gao, Shangkai
Author_Institution :
Dept. of Biomed. Eng., Tsinghua Univ., Beijing
Abstract :
In this paper, the optimal binary sequences for coded excitation in B-mode medical ultrasound imaging are found by exhaustive search. The criterion is the mainlobe to sidelobe ratio (MSR) of the pulse compression. The pulse compression filter is designed based on an FIR least squares inverse filtering algorithm. The optimal binary sequences of length 13 to 28 are shown. A simulation of coded excitation using the resulting sequence is performed. The presented search results showed regularity in the structure of sequences with high MSR, which may be of help in the search of longer sequences
Keywords :
FIR filters; binary sequences; biomedical ultrasonics; medical image processing; pulse compression; B-mode medical ultrasound imaging; FIR least squares inverse filtering algorithm; coded excitation; mainlobe-to-sidelobe ratio; optimal binary sequences; pulse compression filter; Autocorrelation; Binary sequences; Biomedical imaging; Equations; Filtering; Finite impulse response filter; Least squares methods; Matched filters; Pulse compression methods; Ultrasonic imaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1616812
