심볼 단위 채널 부호화된 시퀀스에 대한 블라인드 인터리버 추정

초록

A number of wireless communication systems adopt a channel code for error correction and error correction capability of channel code can be improved by interleaving, which converts burst errors into random errors. However, if information of transmitter's interleaver is not known, a receiver cannot acquire exact data from transmitter because deinterleaving cannot be performed correctly. For this case, interleaver parameters can be estimated by using the linearity of channel code, and related researches have been studied recently. However, previous researches are restricted to estimations of bit unit interleaver when bit unit channel codes are used. Researches for estimation of symbol unit interleaver are insufficient when communications systems adopt symbol unit channel codes such as Reed Solomon code. Thus, in this paper, we propose an estimation method for the symbol unit convolution interleavr when symbol unit channel codes are adopted. We investigate the characteristics of symbol unit convolution interleaved sequence and estimate the parameters such as the number of shift registers and the size of register unit using the linearity of symbol unit channel codes. We verify the proposed estimation algorithm through computer simulations. Then, the detection probabilities for various cases are presented and performance of estimation for noisy channel is analyzed.

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