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Abstract

A kind of applicable to TDCS system basis function method for generating random phase

Author(s): Li-Fang Jian

Based on the requirements of the pseudorandom phase vector in transform domain communication system(TDCS), a new method using chaos mapping and m-sequences control to generate the pseudorandom phases of the basis function in TDCS was proposed. The implementation method and the simulation results regarding the correlation performance for the basis function were discussed in detail. Compared with that of the parallel, the basis function's randomicity of the new method is N times by that of one-ary method(the length of m-sequence is N), as well the basis functions have better correlation performance for that many basis functions with small cross-correlation coefficients can be generated by chaos mapping. The simulation results show that the correlation performance of the basis function produced by the new method was improved and the performance on BER was better.


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