TY - JOUR
T1 - An improved pragmatic turbo encoding scheme for high spectral efficiency using constellation shaping
AU - Raphaeli, Dan
AU - Gurevitz, Assaf
PY - 2003
Y1 - 2003
N2 - We propose a new turbo encoding scheme for high spectral efficiency with performance close to the Gaussian channel capacity. The scheme combines nonuniform signaling on a Gaussian channel, and pragmatic turbo coded modulation for simple and flexible implementation. A table is used to map equiprobable input symbols into nonequiprobable points in the QAM constellation. It is shown that the new scheme provides shaping gains of 0.6 dB and 0.93 dB, at rates 2 and 3 bits/dim respectively compared to the equiprobable pragmatic turbo coded modulation, and reach about 1 dB from the Gaussian channel capacity.
AB - We propose a new turbo encoding scheme for high spectral efficiency with performance close to the Gaussian channel capacity. The scheme combines nonuniform signaling on a Gaussian channel, and pragmatic turbo coded modulation for simple and flexible implementation. A table is used to map equiprobable input symbols into nonequiprobable points in the QAM constellation. It is shown that the new scheme provides shaping gains of 0.6 dB and 0.93 dB, at rates 2 and 3 bits/dim respectively compared to the equiprobable pragmatic turbo coded modulation, and reach about 1 dB from the Gaussian channel capacity.
UR - http://www.scopus.com/inward/record.url?scp=0037971901&partnerID=8YFLogxK
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AN - SCOPUS:0037971901
SN - 0536-1486
VL - 4
SP - 2738
EP - 2742
JO - Conference Record - International Conference on Communications
JF - Conference Record - International Conference on Communications
T2 - 2003 International Conference on Communications (ICC 2003)
Y2 - 11 May 2003 through 15 May 2003
ER -