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Showing 1 to 20 of 31 for “"BCH"”.
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On Iterative Decoding of Bch Codes and Decoding Beyond the Bch Bound
Made available in DSpace on 2015-09-25T20:09:50Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6915412.pdf: 1296238 bytes, checksum: ae9e9bfbda92498eb7733384ab2c9d2a (MD5) Previous issue date: 1969
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On Iterative Decoding of Bch Codes and Decoding Beyond the Bch Bound
Made available in DSpace on 2015-05-12T21:43:52Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6915412.PDF: 1820527 bytes, checksum: 9a49271a8d50009362cdb1eb2974e5d2 (MD5) Previous issue date: 1969
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Optimum implementation of BCH codes
The Bose-Chaudhuri-Hocquenghem (BCH) codes are best constructive codes for channels in which error affect successive symbols independently. The binary BCH codes, a subclass of BCH codes, are known to have good random error correcting capability and Reed-Solomon (RS) codes, an important subclass of …
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Álgebra de corpos finitos aplicada à teoria da codificação: estudo do codificador BCH.
… correcting codes and a sepcial class denoted BCH. The BCH code building uses algebraic structure of finite fields and are characterized by operations on polynomials. In order to understand the operation of the BCH codes, we will make a brief introduction to the study of rings, fields, …
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Topics in Coding Theory: 1. The A(,s)(n,d) Problem in The Plotkin Region. 2. Number of Information Symbols in a Bch Code
In chapter 1 we investigate the A(,s)(n,d) problem in the Plotkin Region. The problem is to finding the maximum number of codewords in a code on an alphabet with s symbols that has length n and minimum Hamming distance d. The Plotkin Region is the set of n and d such that sd > t(s - 1)n. We define …
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Betha Cholmáin maic Luacháin: an ecclesiastical microcosm of the twelfth-century Irish midlands
Betha Cholmáin maic Luacháin (BCh) is a key source of information about a small ecclesiastical community of the Irish midlands in the medieval period. BCh is one of the longest medieval Irish hagiographic texts. A sole copy exists. Scholarly concern with manuscript Rennes 598, and the Life of …
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At the foot of Table Mountain: paediatric tuberculosis patient experiences in a centralised treatment facility in Cape Town, South Africa
… Town, South Africa. Brooklyn Chest Hospital (BCH) is considered to be a provincial TB centre of excellence in the Western Cape (Parsons et al 2010) and as such, caters to both adult and paediatric TB patients. While there are other similar facilities in South Africa, BCH specializes in …
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Protichybové systémy využívající blokové kódy
… na podrobný popis Fireova, Hammingova a dvou BCH kódů. Po zdůvodnění výběru právě Hammingova kódu je popisováno odzkoušení funkčnosti protichybového systému v prostředí MathCad.
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Contributions to the decoding of linear codes over Z4
… codes of the same minimum distance d, and use BCH codes in all our computer simulations. In the first part of this thesis, we study the performance of BCH codes under list decoding, a decoding technique that finds a list of codewords falling within a certain Hamming distance, say tau, from the …
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Early warning of patient deterioration in the inpatient setting
… nursing staff. At Boston Children's Hospital (BCH), early warning scores are evaluated at least every four hours for each patient. Many hospitals monitor inpatients continuously to alert caregivers to changes in physiological status. At BCH, each hospital bed is equipped with a bedside monitor …
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Performance of error correcting codes with random and burst errors
… codes two well known classes of codes are used: BCH codes and Fire codes. The performance of all the codes with regard to random error correction is analysed using a binary symmetric channel model. BCH codes are shown to be more powerful for average codeword length, but as the codeword length …
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Symmetries in algebraic Property Testing
… new characterization of the extensively studied BCH codes. As a by-product, we obtain a more explicit description of structured tests for the special family of BCH codes of design distance 5.
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Error rate performance analysis of stream and block ciphers in a digital mobile communication channel.
… modes are considered. The ability of binary BCH codes and of bit interleaving to reduce the error rate over fading channels is examined in detail. Experimental results are derived from computer simulations where the digital mobile communication channel is represented by the Gilbert and …
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Cyclic Codes: Low-Weight Codewords and Locators
… codes such as the Bose-Chaudhuri-Hocquenghem (BCH) codes, quadratic residue (QR) codes and Golay codes. In this thesis I tackle two problems related to cyclic codes: finding low-weight codewords and decoding. Computing efficiently low-weight codewords of a cyclic code is often a key ingredient …
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Study of Modulation and Error Control Coding in Thick Film Digital Magnetic Recording
… correcting codes were used, these are the linear BCH code and the Non-Linear Reed Solomon Code.<br/><br/>The results of this thesis conclude that the effects of Tape Noise and ISI are independent pulse to pulse. A strategy was developed for pulse reconstruction for Manchester Modulation code. The …
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Channel-and-circuits aware, energy-efficient coding for high speed links
… codes. Four codes, specifically Hamming, BCH, Fire, and SEC-DED codes, are implemented and analyzed with various configurations (i.e. different blocksizes, data rates, and detection or correction). Most significantly, it is discovered that detection and retransmission of even the simple …
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System-Aware Design of Energy-Efficient High-Speed I/O Links
… can be achieved. We propose binary BCH codes, as these codes o ffer sufficient coding gain at moderate to high code-rates, and can be implemented at low power via techniques presented in this thesis. Further, we propose an accurate statistical model to evaluate the impact of FEC on …
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Coding performance on the AX.25 radio packet
… This thesis studies the performance of various BCH codes, the (23,12) Golay code, Reed-Solomon codes, and different rate convolutional codes with varying constraint lengths when used in conjunction with the go-back-N ARQ. Code combining and concatenation are also studied. The performance of …
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Fault tolerant, low voltage SRAM design
… SRAM design. A double error correcting binary BCH codec is chosen to mitigate reliability problems. Different decoding schemes are compared in terms of their synthesized power, area and latency. An alternative decision-tree based decoder is analyzed. This decoder requires 16ns for error …
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