TRANSMISSION METHOD OF CODE DIVISION MULTIPLEXING AND MULTIPLE ACCESS
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United States of America Patent
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Issued Date -
May 5, 2011
app pub date -
Sep 13, 2009
filing date -
Sep 13, 2009
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Abandoned
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Abstract
The present invention relates to a code multiplexing method which employs the parallel linear or nonlinear coding whose coding rate is more than one for the multiplexing transmission. When the coding rate is more than one, the parallel input bits sequence and the parallel output bits sequence have a one-to-one relationship. The aforementioned parallel coding method is beyond the finite field, and all the parallel coding polynomial set is coprime with each other. The method includes the following steps: compositing the encoding matrix B which contains K coding vectors, forming K parallel data transmission paths which correspond to the K coding vectors, processing the convolutional coding between each data path and the corresponding coding vector where the coding constraint length is L, forming the N-dimensional output vectors by summing the result of the K convolutional coding data paths, receiving the aforementioned N-dimensional coding output vectors and taking the sequence detection. The abovementioned K, N, L are the basic parameters for the parallel coding. The present invention can greatly boost the system capacity and enhance the frequency efficiency by using the linear or nonlinear coding transmission whose coding rate is more than one.
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