Title :
SNR mismatch in bit-interleaved turbo-coded modulation
Author :
Sun, Minying ; Li, Yuan ; Sun, Sumei
Author_Institution :
Inst. for Infocomm Res., Singapore, Singapore
Abstract :
Bit-interleaved turbo-coded modulation is more sensitive to signal-to-noise ratio (SNR) overestimation than turbo code with BPSK. An explanation is given from the effect of SNR mismatch on bit-metric generation, which consequently affects the log-MAP turbo-decoding algorithm.
Keywords :
AWGN channels; modulation coding; noise; turbo codes; SNR mismatch; SNR overestimation; additive white Gaussian noise channel; bit-interleaved modulation; bit-metric generation; log-MAP turbo-decoding algorithm; multilevel modulation; signal-to-noise ratio; turbo-coded modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20030889
