P. Lee

ORCID: 0000-0002-9089-4292
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About
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Research Areas
  • Cellular Automata and Applications
  • Error Correcting Code Techniques
  • Coding theory and cryptography
  • Advanced Wireless Communication Techniques
  • Network Time Synchronization Technologies
  • Nonlinear Dynamics and Pattern Formation
  • Algorithms and Data Compression
  • Advancements in PLL and VCO Technologies
  • Neural Networks and Applications
  • Advanced Data Storage Technologies
  • Traffic control and management
  • Advanced Power Amplifier Design
  • Radio Frequency Integrated Circuit Design
  • Blind Source Separation Techniques
  • Opinion Dynamics and Social Influence
  • Complex Network Analysis Techniques
  • Network Security and Intrusion Detection
  • DNA and Biological Computing
  • Full-Duplex Wireless Communications

University of California, San Diego
1987-2008

Western Digital (United States)
1989-2006

Dynamic Research (United States)
2005

Western Digital (Japan)
1999-2002

This paper considers the integration of communication and control with respect to task coordinated heading for a group N vehicles energy efficiency communications in mind. The employed on each vehicle is discretization well-known Kuramoto model nonlinearly coupled oscillators over sequence logical graphs. Stability both all-to-all random one- to-all broadcasts shown be dependent coupling strength, K, time discretization, DeltaT. For desired system performance characteristics, DeltaT imposes...

10.1109/jsac.2008.080511 article EN IEEE Journal on Selected Areas in Communications 2008-04-29

A general method is presented for constructing a single-error-correcting, run-length-limited code the class of input-restricted, binary symmetric channels described by parameters (d,k), where d minimum and k maximum number consecutive zeros in any allowable channel input sequence. Upper lower bounds on rates these codes are derived.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

10.1109/18.45295 article EN IEEE Transactions on Information Theory 1989-01-01

Two simple codes are presented which both provide error correction and satisfy (d,k) constraints. Both rate 1/3 trellis codes. The first is a =

10.1109/tmag.1987.1065193 article EN IEEE Transactions on Magnetics 1987-09-01

The power efficiency of the final stage amplifier (PA) in a RF transmitter is critical for overall consumption, size, lifetime, and reliability transceiver products, especially portable low-power highly-integrated RF-SoC applications. This paper discusses limitations issues applying analytic design equations designing highly efficient class E PAs. main focus this work on validation previously published optimal PAs design, as we implemented PA designs using both discrete transistors...

10.1109/vdat.2005.1500045 article EN 2005-08-30

Upper and lower bounds on the weight distribution of overextended Reed-Solomon (OERS) codes are derived, from which tight upper probability undetected error for OERS obtained q-ary symmetric channels

10.1109/tit.2006.876255 article EN IEEE Transactions on Information Theory 2006-07-26

Clock distribution systems are used in many applications requiring accurate time basis: integrated circuits, computer networks, satellite communications, and Global Position System (GPS). Trying to automatize the design of clock systems, this work presents a general formulation considering possible topologies parameters, building computational tool allowing evaluate performance any case be studied. The developed enables simulate networks setting number nodes, internal node topology,...

10.1155/2024/3134522 article EN cc-by Journal of Electrical and Computer Engineering 2024-01-01

We derive upper and lower bounds on the weight distribution of Over-Extended Reed-Solomon (OERS) codes. Using these bounds, we obtain tight probability undetected error for OERS codes q-ary symmetric channels.

10.1109/itw.2006.1633800 article EN 2006-05-25

In this paper, we summarize some recent results on the use of neural net equalization in a magnetic recording channel using partial response signaling. Specifically, compare performance various equalizers to more conventional equalizer designs. The results, which were based experimentally measured data (includes both known and unknown nonlinear characteristics), show that with respect mean square error metric, has significantly better than designs.< <ETX...

10.1109/acssc.1993.342537 article EN 2002-12-30

We consider a new constraint on stored data in partial response digital magnetic recording. The one-pairs is an upper bound the maximum number of symbols between pairs ones coded sequence and can be considered as alternative to widely used (0, G/I) constraint. limits quasi-catastrophic error propagation guarantees occurrence superior timing corrections class IV (PR4) extended PR4 (EPR4) recording systems. In this paper we give low complexity rate 8/9, 16/17, 24/25 block codes, derive...

10.1109/20.764917 article EN IEEE Transactions on Magnetics 1999-05-01

The authors present a parallel decoding method for concatenated outer (nearest the channel) error-correcting code (ECC) and inner user) error-detecting (EDC). This can be used if (1) both ECC EDC are linear codes, (2) decoder implemented as an error-trapping decoder, (3) is realized by polynomial division circuit. algorithm described when received codeword corrected forward backward decoder. A mathematical justification presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...

10.1109/acssc.1991.186409 article EN 2002-12-09
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