Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2004.08c
- /
- Pages.663-666
- /
- 2004
A Modified Soft Output Viterbi Algorithm for Quantized Channel Outputs
- Lee Ho Kyoung (School of Electronic and Electrical Engineering. Hongik University) ;
- Lee Kyoung Ho (School of Electronic and Electrical Engineering. Hongik University)
- Published : 2004.08.01
Abstract
In this paper, a modified-SOYA (soft output viterbi algorithm) of turbo codes is proposed for quantized channel receiver filter outputs. We derive optimum branch values for the Viterbi algorithm. Here we assume that received filter outputs are quantized and the channel is additive white Gaussian noise. The optimum non-uniform quantizer is used to quantize channel receiver filter outputs. To compare the BER (bit error rate) performance we perform simulations for the modified SOYA algorithm and the general SOYA
Keywords