Monthly Archives: December 2013

Paper to appear at Optical Fiber Communication Conference (OFC)

A recent co-authored paper on symbol synchronization for optical OFDM systems has been accepted at publication at the 2014 Optical Fiber Communication Conference (OFC).

Rachid Bouziane, Peter A. Milder, Sean Kilmurray, Benn C. Thomsen, Stephan Pachnicke, Polina Bayvel, and Robert I. Killey. “Blind symbol synchronisation in direct-detection optical OFDM using virtual subcarriers.”

Abstract: We investigate the performance of a novel blind symbol synchronisation technique using a 30.65Gb/s real-time 16-QAM OFDM transmitter with direct detection. The proposed scheme exhibits low complexity and does not have any bandwidth overhead.

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Reliability paper to appear at DATE 2014

My recently coauthored paper on execution signature compression has been accepted to Design, Automation and Test in Europe (DATE) 2014.

Jonah Caplan, Maria Isabel Mera, Peter Milder, and Brett H. Meyer. “Trade-offs in Execution Signature Compression for Reliable Processor Systems.”

Preprint available here.

Abstract—As semiconductor processes scale, making transistors more vulnerable to transient upset, a wide variety of microarchitectural and system-level strategies are emerging to perform efficient error detection and correction computer systems. While these approaches often target various application domains and address error detection and correction at different granularities and with different overheads, an emerging trend is the use of state compression, e.g., cyclic redundancy check (CRC), to reduce the cost of redundancy checking. Prior work in the literature has shown that Fletcher’s checksum (FC), while less effective where error detection probability is concerned, is less computationally complex when implemented in software than the more-effective CRC. In this paper, we reexamine the suitability of CRC and FC as compression algorithms when implemented in hardware for embedded safety-critical systems. We have developed and evaluated parameterizable implementations of CRC and FC in FPGA, and we observe that what was true for software implementations does not hold in hardware: CRC is more efficient than FC across a wide variety of target input bandwidths and compression strengths.

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New course, Spring 2014

My new course ESE-507, “Advanced Digital System Design and Generation” will be offered this Spring 2014 semester.

The field of digital system design has entered a new and complicated era. Digital designers now have increasingly large amounts of chip area to exploit, but they are strictly limited by the amount of power that can be consumed per transistor (the so-called “power wall”). Modern design practices must carefully balance a variety of system tradeoffs such as power, energy, area, throughput, latency, bandwidth, and reusability/customization of digital systems. This course will study how new design abstractions, languages, and tools can help address these problems from the system designer’s perspective.

Syllabus available here.