A High efficiency 16-Channel ICA RISC-V Processor for Biomedical Signal Processing

• Main Authors: Chen, Yu-Jui, 陳俞睿
• Other Authors: Chiueh, Herming
• Format: Others
• Language: en_US
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/19879372082744467690

碩士 === 國立交通大學 === 電機工程學系 === 105 === To improve the performance of epileptic seizure detection, independent component analysis (ICA) is applied to multi-channel signals to separate artifacts and signals of interest. FastICA is an efficient algorithm to compute ICA. However, the number of channels will limit by chip area. ICA has much matrix operations. The complexity of matrix is O (n2~3). It is hard to extend channel out of four to eight channels. In the case of ECoG signal, the electrode patches are fixed after installation. Some of the FastICA algorithm can be reduced because of fixed electrode patches. We only need one-time singular value decomposition for eigenvalue at first time. We can implement singular value decomposition by firmware in stand of hardware to reduce area. We can have more area to get more channels. The microcontroller can implement other protocol and signal process making this chip more applicable. The performance of the chip was verified by human dataset.