In order to get error-free data in any wireless communication systems the data has to be transmitted and received in an efficient manner. But in case of some wireless networks such as cognitive radio(CR) technology,wh...
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ISBN:
(数字)9781538681138
ISBN:
(纸本)9781538681138
In order to get error-free data in any wireless communication systems the data has to be transmitted and received in an efficient manner. But in case of some wireless networks such as cognitive radio(CR) technology,while performing spectrum sensing and spectrum allocation, they may cause interferences which leads to creating error in transmitted data. To overcome such problem in CR technology, the efficient data transmission needs Error Detection and Correction method. Here various error detection and correction methods are implemented based on parity check code along with hamming code algorithm. Encoder block may calculate the parity bits for data bits in various parity check code methods and also parity bits are coded with hamming codes. Whereas in decoder block, data can be regenerated after calculating syndrome vector and paritychecking also takes place. Such encoder and decoder block is developed using verilog coding in Xilinx ISE software. Finally the comparison of various parity check code with hamming code is distinguished.
We classify all q-ary ?-divisible linear codes which are spanned by codewords of weight ?. The basic building blocks are the simplex codes, and for q = 2 additionally the first order Reed-Muller codes and the parity c...
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We classify all q-ary ?-divisible linear codes which are spanned by codewords of weight ?. The basic building blocks are the simplex codes, and for q = 2 additionally the first order Reed-Muller codes and the parity check codes. This generalizes a result of Pless and Sloane, where the binary self-orthogonal codes spanned by codewords of weight 4 have been classified, which is the case q = 2 and ? = 4 of our classification. As an application, we give an alternative proof of a theorem of Liu on binary ?-divisible codes of length 4? in the projective case.
In the communication of ternary optical computer (TOC), channel failure can make the communication system restart and data retransmission too many times, resulting in wasted resources. We have done the following work ...
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In the communication of ternary optical computer (TOC), channel failure can make the communication system restart and data retransmission too many times, resulting in wasted resources. We have done the following work to solve this problem: proposed a parity check code for TOC. And take it as the core to improve the ternary Hamming code theory. To realize the practical application of Hamming code, ternary logic gates (MIN gate, MAX gate, and NOT gate) are designed. The Hamming code error correction module is designed by taking ternary logic gates as the essential component. Compared with TOC without the error correction module, the Hamming code error correction module can improve tolerance of the TOC channel for occasional failures. It dramatically reduces the communication cost and the waste of resources. Finally, this paper designs a set of verification experiments of Hamming code theory to verify its correctness. The experimental results show that the bit error rate of TOC output results can be reduced by one order of magnitude after error correction by Hamming code error correction module.
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