An 8 - Dimensional Trellis - Coded 8 - PSK with Non - Zero Crossing Constraint
نویسندگان
چکیده
We present an 8-dimensional trellis-coded 8PSK with a symbol transition constraint that is similar to that of =4-shift quadrature phase shift keying(QPSK). This scheme can achieve a coding gain of 1.6 to 2.4 dB at the same rate of =4shift QPSK on Gaussian channel, and it has also an immunity against the integer multiples of 90 phase ambiguities. In order to label the constellation of the proposed scheme, a constellation partitioning algorithm is presented. This algorithm,on the basis of set partitioning, can be used to label the signal constellation with no coset structure. key words: TCM, =4-shift QPSK, set partitioning, non-zero crossing
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