6 research outputs found
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Recursive construction for error correcting constant weight codes
In this project we have designed a new construction method for t error correcting constant weight codes. This method is an improvement over the existing codes in terms of information rate. The construction method is recursive as it is based on the observation that 2t error correcting code can be built by concatenating two t error correcting codes.This results in reduction of code word length for higher t values
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Design of efficient constant weight codes
In a constant weight code, each code word contains a constant number of 1's. If this number is equal to half the length of the code word then the code is called balanced. These codes find many applications in computer and communication systems noise reduction in VLSI systems, fault masking in bus lines of VLSI systems, rejection of the low frequency components in digital communication systems, delay insensitive communications in asynchronous systems, data transmission in fiber optics, data storage in optical discs and magnetic tapes, fault tolerant synchronous circuits, etc. This thesis presents new efficient design methods for constant weight codes suitable to these applications. The proposed codes require low redundancy but at the same time have fast and simple encoding/decoding algorithms