METHOD FOR DECODING CHANNEL USING NOISE LEVEL CORRECTION IN HIGH SPEED MOBILDE RECEPTION ENVIRONMENT AND APPARATUS USING THE SAME

摘要

Disclosed are a channel decoding method using noise level correction in a high-speed mobile reception environment and an apparatus therefor. In a channel decoding method according to an embodiment of the present invention, an OFDM-based signal receiver moving at high speed estimates inter-carrier interference (INTER CARRIER INTERFERENCE, ICI) on received signal power based on the movement speed of the signal receiver. step; calculating, by the signal receiver, a SIGNAL TO NOISE RATIO (SNR) for a received signal using the inter-carrier interference estimate; and decoding, by the signal receiver, a channel code based on the bitwise log likelihood ratio (LOG LIKELIHOOD RATIO, LLR) calculated based on the signal-to-noise ratio and the received signal.