Bandwidth-efficient turbo trellis-coded modulation using punctured component codes

@article{citeulike:2042842, abstract = {We present a bandwidth-efficient channel coding scheme that has an overall structure similar to binary turbo codes, but employs trellis-coded modulation (TCM) codes (including multidimensional codes) as component codes. The combination of turbo codes with powerful bandwidth-efficient component codes leads to a straightforward encoder structure, and allows iterative decoding in analogy to the binary turbo decoder. However, certain special conditions may need to be met at the encoder, and the iterative decoder needs to be adapted to the decoding of the component TCM codes. The scheme has been investigated for 8-PSK, 16-QAM, and 64-QAM modulation schemes with varying overall bandwidth efficiencies. A simple code choice based on the minimal distance of the punctured component code has also been performed. The interset distances of the partitioning tree can be used to fix the number of coded and uncoded bits. We derive the symbol-by-symbol MAP component decoder operating in the log domain, and apply methods of reducing decoder complexity. Simulation results are presented and compare the scheme with traditional TCM as well as turbo codes with Gray mapping. The results show that the novel scheme is very powerful, yet of modest complexity since simple component codes are used}, author = {Robertson, P. and Worz, T. }, booktitle = {Selected Areas in Communications, IEEE Journal on}, citeulike-article-id = {2042842}, doi = {http://dx.doi.org/10.1109/49.661109}, journal = {Selected Areas in Communications, IEEE Journal on}, keywords = {bandwidth, code, efficiency, modulation, puncturing, trellis}, number = {2}, pages = {206--218}, posted-at = {2008-04-15 18:47:19}, priority = {2}, title = {Bandwidth-efficient turbo trellis-coded modulation using punctured component codes}, url = {http://dx.doi.org/10.1109/49.661109}, volume = {16}, year = {1998} }

TY - JOUR ID - citeulike:2042842 L3 - citeulike-article-id:2042842 TI - Bandwidth-efficient turbo trellis-coded modulation using punctured component codes T2 - Selected Areas in Communications, IEEE Journal on JF - Selected Areas in Communications, IEEE Journal on VL - 16 IS - 2 SP - 206 EP - 218 N2 - We present a bandwidth-efficient channel coding scheme that has an overall structure similar to binary turbo codes, but employs trellis-coded modulation (TCM) codes (including multidimensional codes) as component codes. The combination of turbo codes with powerful bandwidth-efficient component codes leads to a straightforward encoder structure, and allows iterative decoding in analogy to the binary turbo decoder. However, certain special conditions may need to be met at the encoder, and the iterative decoder needs to be adapted to the decoding of the component TCM codes. The scheme has been investigated for 8-PSK, 16-QAM, and 64-QAM modulation schemes with varying overall bandwidth efficiencies. A simple code choice based on the minimal distance of the punctured component code has also been performed. The interset distances of the partitioning tree can be used to fix the number of coded and uncoded bits. We derive the symbol-by-symbol MAP component decoder operating in the log domain, and apply methods of reducing decoder complexity. Simulation results are presented and compare the scheme with traditional TCM as well as turbo codes with Gray mapping. The results show that the novel scheme is very powerful, yet of modest complexity since simple component codes are used KW - bandwidth KW - code KW - efficiency KW - modulation KW - puncturing KW - trellis AU - Robertson, P AU - Worz, T PY - 1998/// UR - http://dx.doi.org/10.1109/49.661109 ER -