This paper proposes a novel multi-dimensional modulation (MDM) scheme that achieves better performance than conventional modulation without any diversity or coding gain. We exploit the additional degrees of freedom offered by higher dimensional Euclidean space to construct the proposed constellation design. Analytical results are obtained for the exact symbol and bit error performance of the MDM design over Gaussian and Rayleigh fading channels. Through simulation, we compare the error performance of the MDM scheme with conventional orthogonal modulation.
IndexTerms-Error analysis, modulation, and multidimensional constellation.
This paper proposes a novel joint source coding and modulation scheme. The modulation constellation points are selected according to their prior symbol probabilities for better bandwidth as well as better bit error rate performance. Both the analysis and simulation results are presented to verify that the proposed scheme can achieve better performance than the conventional disjoint source coding and modulation schemes if the modulation and source coding are designed jointly and efficiently.
Index Terms-Quadrature Phase Shift Keying, Bit Error Rate, Maximum A Posteriori Probability, MaximumLikelihood.
This paper proposes a multi-dimensional modulation (MDM) technique that achieves better performance than conventional orthogonal modulation without any diversity or coding gain. The key to improving upon the performance of orthogonal modulation is to efficiently exploit the additional degrees of freedom offered by higher dimensional Euclidean space in the constellation design. Analytical results are obtained for the exact symbol and bit error performance of the MDM design over flat and multipath Rayleigh fading channels. Through simulation, we compare the error performance of the MDM scheme with conventional orthogonal modulation, namely frequency-shift keying.
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