Title :
Effect of CDMA techniques with Kasami codes on ultrasound-image quality parameters
Author :
Diego, Cristina ; Hernández, Álvaro ; Jiménez, Ana ; Holm, Sverre ; Aparicio, Joaquìn
Author_Institution :
Dept. of Electron., Univ. of Alcala, Madrid, Spain
Abstract :
This works presents an analysis of the benefits of CDMA (Code Division for Multiple Access) excitation techniques on the quality parameters of ultrasonic phased array images such as gratinglobes, sidelobes, dynamic range, lateral resolution and range resolution. In order to consolidate these benefits, a comparison between phased array excitation and CDMA techniques in airborne transmission is performed. Furthermore it is shown how not only image rate, but also range resolution and SNR (Signal to Noise Ratio) are improved with CDMA excitation techniques. A disadvantage of the proposal is a decreased dynamic range in the B-Scan image, therefore a different emission schema is proposed.
Keywords :
code division multiple access; image coding; image resolution; image scanners; medical image processing; ultrasonic imaging; B-scan image; CDMA excitation technique; Kasami code; SNR; airborne transmission; code division for multiple access excitation technique; dynamic range; gratinglobe; lateral resolution; range resolution; sidelobe; signal to noise ratio; ultrasonic phased array images quality parameters; Acoustics; Arrays; Dynamic range; Gratings; Multiaccess communication; Signal to noise ratio; Ultrasonic imaging; B-Scan; CDMA; Phased array; Ultrasonic imaging;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International
Conference_Location :
Graz
Print_ISBN :
978-1-4577-1773-4
DOI :
10.1109/I2MTC.2012.6229427
