An Interleaved EPE-Immune PA-DPL Structure for Resisting Concentrated EM Side Channel Attacks on FPGA Implementation

Early propagation effect (EPE) is a critical problem in conventional dual-rail logic implementations against Side Channel Attacks (SCAs). Among previous EPE-resistant architectures, PA-DPL logic offers EPE-free capability at relatively low cost. However, its separate dual core structure is a weakness when facing concentrated EM attacks where a tiny EM probe can be precisely positioned closer to one of the two cores. In this paper, we present an PA-DPL dual-core interleaved structure to strengthen resistance against sophisticated EM attacks on Xilinx FPGA implementations. The main merit of the proposed structure is that every two routing in each signal pair are kept identical even the dual cores are interleaved together. By minimizing the distance between the complementary routings and instances of both cores, even the concentrated EM measurement cannot easily distinguish the minor EM field unbalance. In PA- DPL, EPE is avoided by compressing the evaluation phase to a small portion of the clock period, therefore, the speed is inevitably limited. Regarding this, we made an improvement to extend the duty cycle of evaluation phase to more than 40 percent, yielding a larger maximum working frequency. The detailed design flow is also presented. We validate the security improvement against EM attack by implementing a simplified AES co-processor in Virtex-5 FPGA.

Analysis and optimized design of a distributed multi-stage EMC filter for an interleaved three-phase PWM-rectifier system for aircraft applications

Different possible input filter configurations for a modular three-phase PWM rectifier system consisting of three interleaved converter cells are studied. The system is designed for an aircraft application where MIL-STD-461E conducted EMI standards have to be met and system weight is a critical design issue. The importance of a LISN model on the simulated noise levels and the effect of interleaving and power unbalance between the different converter modules is discussed. The effect of the number of filter stages and the degree of distribution of the filter stages among the individual converter modules on the weight and losses of the input filter is studied and optimal filter structures are proposed.

Interleaved multi-cell isolated three-phase PWM rectifier system for aircraft applications

Recently there has been an important increase in electric equipment, as well as, electric power demand in aircrafts applications. This prompts to the necessity of efficient, reliable, and low-weight converters, especially rectifiers from 115VAC to 270VDC because these voltages are used in power distribution. In order to obtain a high efficiency, in aircraft application where the derating in semiconductors is high, normally several semiconductors are used in parallel to decrease the conduction losses. However, this is in conflict with high reliability. To match both goals of high efficiency and reliability, this work proposes an interleaved multi-cell rectifier system, employing several converter cells in parallel instead of parallel-connected semiconductors. In this work a 10kW multi-cell isolated rectifier system has been designed where each cell is composed of a buck type rectifier and a full bridge DC-DC converter. The implemented system exhibits 91% of efficiency, high power density (10kW/10kg), low THD (2.5%), and n−1 fault tolerance which complies, with military aircraft standards.

Multiphase Parallel Interleaved And Primary-Parallel Secondary-Series Forward Micro-Inverter Comparison.

Using multiphase technique is interesting in PV AC-module application due to light-load efficiency improvement by applying phase shedding, and the possibility of low-profile implementation. This paper presents a comparison, in terms of size and efficiency, of the parallel interleaved and the parallel-series connected multiphase configurations, as a function of the number of phases, for a forward micro-inverter operated in DCM. 8-phase prototypes of both multiphase configurations are built and compared between them and with the single phase forward micro-inverter, validating the presented analysis.

Interleaved concatenated codes: New perspectives on approaching the Shannon limit

The last few years have witnessed a significant decrease in the gap between the Shannon channel capacity limit and what is practically achievable. Progress has resulted from novel extensions of previously known coding techniques involving interleaved concatenated codes. A considerable body of simulation results is now available, supported by an important but limited theoretical basis. This paper presents a computational technique which further ties simulation results to the known theory and reveals a considerable reduction in the complexity required to approach the Shannon limit.

Interleaved almanac, 1748

John Holyoke’s diary is interleaved in Nathaniel Ames’ An astronomical diary, or, An almanack for the year of our Lord Christ, 1748 (Boston, 1747). The thin paper-covered book holds brief notes about Holyoke’s daily life as a Harvard undergraduate, written on blank pages bound with the almanac. Holyoke's diary offers a resource for information about the relational networks of the Holyoke family, travel in 18th century Massachusetts, and colonial dress.

Interleaved almanac, 1742

The 1742 diary is interleaved in Nathaniel Ames’ An astronomical diary, or, An almanack for the year of our Lord Christ, 1742. The volume holds brief notes about Holyoke’s daily life, written on blank pages bound with the almanac. Each page, representing one month, is divided into three columns with a section for the weather, the direction of the wind, and finally notes on the day and Holyoke’s undeciphered shorthand. The diary begins before Holyoke’s admittance to Harvard and concludes in his freshman year. The earlier months have regular entries, he later stops recording the weather and makes only sporadic entries. Holyoke notes holidays, travel events, interactions with Harvard faculty, and infrequently, community events such as a burial or trial. On the last page, Holyoke provides "An account of our examination the 13 day of July 1742: viz: [Daniel] Foxcroft [Joseph] Green myself and [James] Putnam listing the specific examiners and the texts used for the exam.

Interleaved almanac, 1743

The 1743 diary is interleaved in Nathaniel Ames’ An Astronomical Diary, or, An almanack for the year of our Lord Christ, 1743. The thin paper-covered book holds brief notes about Holyoke’s daily life as an undergraduate, written on blank pages bound with the almanac. The pages of the diary are separated into two columns: the first to display symbols indicating when class recitations occurred, and the second for entries. Entries include information about student life, Harvard events such as Overseers’ meetings and individuals who preached and lectured, trips to Boston and surrounding towns, and occasional references to community deaths and illnesses.

Interleaved almanac, 1744

The 1744 diary is interleaved in Poor Richard's An almanack for the year of Christ 1744. The thin paper-covered book holds brief notes about Holyoke’s daily life as an undergraduate at Harvard, written on blank pages bound with the almanac. The entries focus on Holyoke’s life as a college student with mention of his professors and daily events. The months of May, July, October, November, and December have no entries. The diary records the outbreak of King George's War: "War with France Proclamed [sic]" (June 2), as well as his new hobby of painting.

Interleaved almanac, 1746

The 1746 diary is interleaved in Poor Richard's, An almanack for the year of Christ 1746. The thin paper-covered book holds brief notes about Holyoke’s daily life, written on blank pages bound with the almanac. More consistently filled out, the diary continues information about Holyoke’s senior year at Harvard, and his appointment as a schoolteacher in Lexington, Massachusetts. The September and October entries reference local military movements of King George’s War. The diary includes regular entries on individuals who preached and lectured at Harvard. Holyoke mentions an earthquake in February, and in March he notes that Harvard Professor John Winthrop "had a lecture: Solving ye Aurora Bor[ealis]."

Interleaved almanac, 1748

John Holyoke’s diary is interleaved in Nathaniel Ames’ An astronomical diary, or, An almanack for the year of our Lord Christ, 1748 (Boston, 1747). The thin paper-covered book holds brief notes about Holyoke’s daily life as a Harvard undergraduate, written on blank pages bound with the almanac. Holyoke's diary offers a resource for information about the relational networks of the Holyoke family, travel in 18th century Massachusetts, and colonial dress.

A manual of statutory corporation law : classified corporation laws of all the states, containing a digest of the business corporation laws of every state and territory of the United States, arranged uniformly, with the enactments of 1906 interleaved /

Includes bibliographical references and index.

Analysis and design of interleaved memory systems

Thesis (M.S.)--Universty of Illinois at Urbana-Champaign.

The prayer book interleaved : with historical illustrations and explanatory notes arranged parallel to the text /

Added t.p.: The book of common prayer ... according to the use of the United Church of England and Ireland ... Cambridge : C.J. Clay, 1866.