TY - GEN
T1 - On-chip principal component analysis with a mean pre-estimation method for spike sorting
AU - Chen, Tung Chien
AU - Chen, Kuanfu
AU - Liu, Wentai
AU - Chen, Liang Gee
PY - 2009
Y1 - 2009
N2 - Principal component analysis (PCA) spike sorting hardware in an integrated neural recording system is highly desired for wireless neuroprosthetic devices. However, a large memory is required to store thousands of spike events during the PCA training procedure, which impedes the on-chip implementation for the PCA training engine. In this paper, a mean pre-estimation method is proposed to save 99.01% memory requirement by breaking the algorithm dependency. According to the simulation result, 100 dB signal-to-error power ratio can be preserved for the resulting principal components. According to the implementation result, 6.07 mm2 silicon area is required after a 283.16 mm2 area saving for the proposed PCA training hardware.
AB - Principal component analysis (PCA) spike sorting hardware in an integrated neural recording system is highly desired for wireless neuroprosthetic devices. However, a large memory is required to store thousands of spike events during the PCA training procedure, which impedes the on-chip implementation for the PCA training engine. In this paper, a mean pre-estimation method is proposed to save 99.01% memory requirement by breaking the algorithm dependency. According to the simulation result, 100 dB signal-to-error power ratio can be preserved for the resulting principal components. According to the implementation result, 6.07 mm2 silicon area is required after a 283.16 mm2 area saving for the proposed PCA training hardware.
UR - http://www.scopus.com/inward/record.url?scp=70350151702&partnerID=8YFLogxK
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U2 - 10.1109/ISCAS.2009.5118461
DO - 10.1109/ISCAS.2009.5118461
M3 - Conference contribution
AN - SCOPUS:70350151702
SN - 9781424438280
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 3110
EP - 3113
BT - 2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
T2 - 2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009
Y2 - 24 May 2009 through 27 May 2009
ER -