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Soft_demapping_QPSK.zip
- soft Demapping QPSK : LLR computation using Euclidian distance approach, Parallel-to-Serial converter : needs I and Q components of QPSK symbols at the input,soft Demapping QPSK : LLR computation using Euclidian distance approach, Parallel-to-Serial
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
QPSK_chain
- Simulation of a baseband QPSK mod/demod: TX : a pseudo random bit stream generation, Serial to parallel conversion, QPSK Mapping (Gray coding), Signal power computation Channel : AWGN channel RX: Soft Demapping / Hard Demapping, Plot constellat
Good_ver_Soft_demapping_QPSK
- good version of soft Demapping QPSK : LLR computation using Euclidian distance approache, Parallel-to-Serial converter, needs I and Q componets of QPSK symbols at the input
demapping_soft_QPSK_good_version
- corrected version of Demapping QPSK : LLR computation using Euclidian distance approach, Parallel-to-Serial converter, needs I and Q componets of QPSK symbols at the input
QPSK.LLR
- illustrates the improvement in BER performance when using log-likelihood instead of hard decision demodulation in a convolutionally coded communication link-illustrates the improvement in BER performance when using log-likelihood instead of hard d
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