%0 Journal Article
%A FAN Ting-ting
%A XU Chang-long
%A YANG Wei
%T Study on the Quantification Problems for Polar Code with Successive Cancellation Decoder
%D 2015
%R 10.13190/j.jbupt.2015.04.020
%J Journal of Beijing University of Posts and Telecommunications
%P 99-104
%V 38
%N 4
%X <p>In order to apply decoding algorithms of polar code in digital chips with low hardware complexity, the quantification problems on the received signals after channel transmission and the initial log likelihood ratios (LLR) of successive cancellation (SC) decoder were studied. The quantized interval and quantization accuracy for the received signals on system bit error rate (BER) performance were analyzed. For the quantization of initial LLR, both uniform and non-uniform quantization which contain two methods named normalizing quantization and decimal quantization were applied. Simulations show that 6 bit uniform quantization on interval [-4 4] and [-20 20] for received signals and initial LLR respectively can both bring BER performance loss less than 0.1 dB, but with hardware implementation complexity decreased significantly.</p>
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2015.04.020