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LDPc
- LDPC编码调制系统中基于反馈LLR均值的迭代解调／译码算法-LDPC coded modulation systems based on iterative feedback from the mean LLR demodulator/decoding algorithm
16QAM_soft_demapping
- This document is about 16 QAM demapping of received data. But its a soft demapping method based Log likelihood ratio(llr). So results can be used as inputs for viterbi decoder or turbo decoder. It is very usefull to decrease BER for communication sys
EXIT
- low density parity check codes for error correcting exit charts for show llr evolution
ppt
- After identifying the best MNT− 1 nodes with the simplified branch metric and the accumulated branch metric at stage NT − 1, we then calculate the LLR of each coded bit utilizing the standard squared Euclidian distance metric. The log-lik
composite
- This function implements the composite objective measure proposed in [1]. It returns three values: The predicted rating of overall quality (Covl), the rating of speech distortion (Csig) and the rating of background distortion (Cbak). The rat