TY - JOUR
T1 - Multidimensional pulse-position coded-modulation for deep-space optical communication
AU - Djordjevic, Ivan B.
N1 - Funding Information:
Manuscript received April 21, 2011; revised June 17, 2011; accepted June 24, 2011. Date of publication June 30, 2011; date of current version August 31, 2011. This letter was supported in part by the NSF under Grant CCF-0952711, Grant ECCS-0725405, and Grant EEC-0812072. The author is with the ECE Department, University of Arizona, Tucson, AZ 85721 USA (e-mail: [email protected]). Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LPT.2011.2160940
PY - 2011
Y1 - 2011
N2 - In order to achieve multigigabit transmission (projected for 2020) for the use in interplanetary communications, in this letter, we propose the use of multidimensional pulse-position modulation (PPM). From Shannon's theory, we know that information capacity is a logarithmic function of signal-to-noise ratio, but a linear function of number of dimensions. By using pulse-positions as a basis function, we can improve the spectral efficiency of conventional PPM. The N-dimensional PPM (ND-PPM) can, therefore, be used to solve the high-bandwidth requirements of future deep-space optical communications. The N-dimensional signal constellation can be obtained as N-dimensional Cartesian product one-dimensional pulse-amplitude modulation constellation. The improvement of ND-PPM over PPM for N=8 in strong turbulence regime is even 3.21 dB at a bit-error rate (BER) of 10-5. In addition, the spectral efficiency of the proposed scheme is N/log2 N times better than that of PPM.
AB - In order to achieve multigigabit transmission (projected for 2020) for the use in interplanetary communications, in this letter, we propose the use of multidimensional pulse-position modulation (PPM). From Shannon's theory, we know that information capacity is a logarithmic function of signal-to-noise ratio, but a linear function of number of dimensions. By using pulse-positions as a basis function, we can improve the spectral efficiency of conventional PPM. The N-dimensional PPM (ND-PPM) can, therefore, be used to solve the high-bandwidth requirements of future deep-space optical communications. The N-dimensional signal constellation can be obtained as N-dimensional Cartesian product one-dimensional pulse-amplitude modulation constellation. The improvement of ND-PPM over PPM for N=8 in strong turbulence regime is even 3.21 dB at a bit-error rate (BER) of 10-5. In addition, the spectral efficiency of the proposed scheme is N/log2 N times better than that of PPM.
KW - Atmospheric turbulence
KW - coded modulation
KW - deep-space optical communication
KW - low-density parity-check (LDPC) codes
KW - multidimensional pulse-position modulation
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U2 - 10.1109/LPT.2011.2160940
DO - 10.1109/LPT.2011.2160940
M3 - Article
AN - SCOPUS:80052415892
SN - 1041-1135
VL - 23
SP - 1355
EP - 1357
JO - IEEE Photonics Technology Letters
JF - IEEE Photonics Technology Letters
IS - 18
M1 - 5936098
ER -