Published papers

DOCTORAL THESIS:

B.K. Butler, "Error Floors of LDPC Codes and Related Topics," Ph.D. dissertation, Dept. Elect. and Comp. Eng., Univ. Calif., San Diego, 2013. link to open access

JOURNAL PAPERS:

B.K. Butler, P.H. Siegel, “Error Floor Approximation for LDPC Codes in the AWGN Channel," IEEE Trans. on Information Theory, Dec., 2014. PDF link

B.K. Butler, P.H. Siegel, “Sharp Bounds on the Spectral Radius of Nonnegative Matrices and Digraphs," Linear Algebra Appl., vol. 439 (1 Sep. 2013) pp. 1468-1478. PDF link

B.K. Butler, P.H. Siegel, “Bounds on the Minimum Distance of Punctured Quasi-Cyclic LDPC Codes," IEEE Trans. on Information Theory, Jul., 2013. PDF link

S. Sarkar, B.K. Butler, E.G. Tiedemann, Jr., “Phone Standby Time in cdma2000:The Quick Paging Channel in Soft Handoff,” IEEE Trans. on Vehicular Technology, Sep., 2001. PDF

CONFERENCE PAPERS:

B.K. Butler, P.H. Siegel, “Numerical Issues Affecting LDPC Error Floors," IEEE Globelcom, Dec. 2012. PDF Slides_PDF

P.H. Siegel, B.K. Butler, S. Kayser, E. Yaakobi, X. Zhang, "Comparison of ECC Performance on Multilevel Flash Memories," Asilomar Conference on Signals, Systems, and Computers, Nov. 2012. (talk only) Slides_PDF

B.K. Butler, P.H. Siegel, “Error Floor Approximation for LDPC Codes in the AWGN Channel," 49th Annual Allerton Conf., Sep. 2011. PDF Slides-PDF

B.K. Butler, P.H. Siegel, “On Distance Properties of Quasi-Cyclic Protograph-Based LDPC Codes,” IEEE International Symposium on Info. Theory, June 2010. PDF Slides-PDF

B.K. Butler, “AWGN Performance of Superorthogonal Convolutional Codes,” IEEE Milcom, Oct. 2006. PDF Slides-PDF

B.K. Butler, K.-C. Lai, K. Saints, B. Meagher, “The MSM5100 cdma2000 + AMPS + gpsOne + Bluetooth Multimode ASIC for 3G Handsets,” IEEE RFIC Symposium, 2002. PDF

V. Aparin, B.K. Butler, P. Draxler, “Cross modulation distortion in CDMA receivers,” IEEE MTT-S International, 2000. PDF

S. Sarkar, B.K. Butler, E.G. Tiedemann, Jr., “Soft handoff on the quick paging channel,” IEEE Globelcom, 1999. PDF

S. Sarkar, B.K. Butler, "Phone Standby Time and the Quick Paging Channel,” IEEE PIMRC, 1999. PDF¹

B.K. Butler, N. Yu, “The MSM3000 dual-mode CDMA+AMPS ASIC: for increased functionality and standby time of handsets,” IEEE RFIC Symposium, 1999. PDF

R. Padovani, B. Butler, R. Boesel, “CDMA Digital Cellular: Field Test Results,” IEEE Vehicular Technology Conference, 1994. PDF

¹IEEExplore does not have the proceedings

SUBMITTED PAPERS:

Several submitted papers appear here

LETTERS, ETC.:

B.K. Butler, “Minimum Distances of the QC-LDPC Codes in IEEE 802 Communication Standards,” https://arxiv.org/abs/1602.02831, Feb. 2016.

B.K. Butler, “Erratum to 'Sharp bounds for the spectral radius of digraphs,'" Linear Algebra Appl., vol. 438 (1 Jan. 2013) pp. 3-4.

B.K. Butler, “Finite Rings & Matrices over Finite Rings," informal presentation, Apr, 2013. PDF

MEMBERSHIP:

Senior Member of IEEE (Institute of Electrical and Electronics Engineers)

• IEEE Communications Society

• IEEE Information Theory Society

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