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Everything about Barker code
Sequence of digital values used for synchronisation
In telecommunication technology, a Barker code or Barker sequence is a finite sequence of digital values with the ideal autocorrelation property. It is used as a synchronising pattern between the sender and receiver of a stream of bits. Apart from the trivial sequence of length 1, the known Barker sequences have lengths 2, 3, 4, 5, 7, 11 and 13. It is conjectured that no longer sequence exists; this is proved for odd lengths, while the possible existence of an even Barker sequence longer than 4 remains open. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: Barker codeA 5-minute orientation
- Skim a recent paper: Micro-crack defects detection of semiconductor Si-wafers based on Barker code laser infrared thermographyInfluential work since 2022
- Pick up a classic book: Beginning Java objectsThe most-reprinted book on the subject
- Read the landmark paper: A new algorithm to optimize Barker code sidelobe suppression filtersCited 25 times
- Go sideways: Ryser's conjecture on circulant Hadamard matricesA closely related topic
- Go sideways: Littlewood polynomialA closely related topic
📖 Definitions
No dictionary entry for this exact phrase.
🏆 Landmark papers (most cited)
A new algorithm to optimize Barker code sidelobe suppression filters
Full speckle suppression in laser projectors using two Barker code-type diffractive optical elements
Ultrasonic non-destructive testing using Barker code pulse compression techniques
Barker Code in TCD Ultrasound Systems to Improve the Sensitivity of Emboli Detection
Nested code sequences of Barker — Mersenne — Raghavarao
Performance Analysis of Barker Code Based on their Correlation Property in Multiuser Environment
Digital Modulator and Demodulator IC for RFID Tag Employing DSSS and Barker Code
Optical schemes for speckle suppression by Barker code diffractive optical elements
🆕 Influential since 2022
Micro-crack defects detection of semiconductor Si-wafers based on Barker code laser infrared thermography
Barker code Pulse-Compression thermography for defects detection in CFRP composites based on 3D-Matched filter
Modified Nested Barker Codes for Ultra-Wideband Signal–Code Constructions
Barker Code Thermography Inspection and Reliability Evaluation for CFRP Defects Detection
A New Type of SH-Guided Wave EMAT based on Barker Code Pulse Compression Technology with Tone-Burst Excitation
📚 Books worth reading
Beginning Java objectsJacquie Barker · 2000- 📕Properties of even-length Barker codes and specific polyphase codes with Barker type autocorrelation functionsShimshon Gabbay · 1982
Accountability CodeMarci Barker · 2022- 📕Venom CodeAndres Meyer, Adolfo de Roodt · 2023
- 📕The history of codes and ciphers in the United States during the period between the World WarsWayne G. Barker · 1979
- 📕Crime and regulationJeremy Rowan-Robinson, Paul Q. Watchman · 1990
- 📕Famous stories of code and cipherRaymond Tostevin Bond · 1947
Beginning C# 2008 objectsGrant Palmer · 2008
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
- Ryser's conjecture on circulant Hadamard matrices Unsolved problem in mathematics Does there exist a real circulant Hadamard matrix of order greater than 4? More unsolved problems in mathematics In matrix…
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- Complementary sequences For complementary sequences in biology, see complementarity (molecular biology). For integer sequences with complementary sets of members see Lambek–Moser…
- Maximum-length sequence A maximum-length sequence (MLS) is a type of pseudorandom binary sequence. They are bit sequences generated using maximal linear-feedback shift registers…
- Ronald Hugh Barker Ronald Hugh Barker FIEE (28 October 1915 – 7 October 2015) was a British physicist, mathematician and engineer whose work led to the identification of…
- Hadamard matrix In mathematics, a Hadamard matrix, named after the French mathematician Jacques Hadamard, is a square matrix whose entries are either +1 or −1 and whose…
- Sign sequence In mathematics, a sign sequence, or ±1–sequence or bipolar sequence, is a sequence of numbers, each of which is either 1 or −1. One example is the sequence…
- Williamson conjecture In combinatorial mathematics, specifically in combinatorial design theory and combinatorial matrix theory, the Williamson conjecture is that Williamson…