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Two-dimensional modulation codes

IEEE Journal on Selected Areas in Communications, 1992
A new class of run-length-limited codes in introduced. These codes are called two-dimensional or multitrack modulation codes. Two-dimensional modulation codes provide substantial data storage density increases for multitrack recording systems by operating on multiple tracks in parallel. Procedures for computing the capacity of these new codes are given
M.W. Marcellin, H.J. Weber
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Noncoherent-coded modulation constructed from conventional trellis-coded modulation

IEEE Communications Letters, 1998
We propose a method to construct noncoherent-coded modulation (NCM) by modifying the conventional trellis-coded modulation (TCM) as proposed by Ungerboeck (1982). The error performance of the modified TCM using noncoherent decoding can approach that of the conventional TCM using coherent decoding for additive white Gaussian noise.
null Ruey-Yi Wei, null Mao-Chao Lin
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