Ph.D. Thesis Defense: Jordan Melzer (Communication Sciences Institute, USC)

Jordan Melzer (Communication Sciences Institute, USC)TITLE: Low complexity turbo-like codesTHESIS ADVISOR: Keith Chugg (USC)ABSTRACT: Error-control coding is a key feature of most modern
communications systems, allowing close to a factor of ten in increased
receiver sensitivity. We explore two aspects of low-cost error-control
code decoders. First we design single decoders that provide competitive
performance-complexity trade-offs over a wide range of operation. We
introduce a new class of codes, show design rules and design techniques
for this class, and design new codes in this class able to give, from a
single decoder, extremely good performance over a range of decoding
effort, block sizes, and code rates and give close to no performance
penalty when generating rate-compatible codewords.
The flexibility and
competitive performance-complexity profile
of these decoder designs
allows them to be good choices both for systems that support a range of
operating conditions and those
that don't.Next we explore decoders with hardware errors. We show that
error-control code decoders that have faults in memory may exhibit very
little performance degradation and suggest design techniques that
virtually eliminate the performance loss from a single
error.

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 539 (10:00am)

Audiences: Everyone Is Invited

Contact: michael neely