A new scheme of coded ultrasound using Golay codes

Golay codes are the most practical code in coded ultrasound imaging systems. But the trade-off for perfect range sidelobe cancellation is the requirement for two firings, thus resulting in motion-dependent decoding errors. In view of this, we propose a new scheme using the simukaneous emission of co...

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Bibliographic Details
Published in:Frontiers of information technology & electronic engineering 2010-06, Vol.11 (6), p.476-480
Main Authors: Jin, Cheng, Chen, Si-ping, Qin, Zheng-di, Wang, Tian-fu
Format: Article
Language:English
Subjects:
Autocorrelation functions
Communications Engineering
Computer Hardware
Computer Science
Computer Systems Organization and Communication Networks
Decoding
Electrical Engineering
Electronics and Microelectronics
Emission
Error analysis
Golay codes
Instrumentation
Motion effects
Networks
Orthogonality
Sidelobes
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Summary:Golay codes are the most practical code in coded ultrasound imaging systems. But the trade-off for perfect range sidelobe cancellation is the requirement for two firings, thus resulting in motion-dependent decoding errors. In view of this, we propose a new scheme using the simukaneous emission of code pairs. The code pair is allocated to different elements of an aperture and transmitted simultaneously. The process of separating the code pair from the echo received is based on the orthogonality of the code pair. At last the autocorrelation functions of the individual Golay codes are added together. The simultaneous emission of code pairs instead of two firings recovers the frame rate loss, and eliminates the motion-dependent decoding error. Our theoretical analysis and simulations show that the scheme can be used to eliminate the tissue motion effects.
ISSN:1869-1951
2095-9184
1869-196X
2095-9230
DOI:10.1631/jzus.C0910353