1.672 Gigabits/s FPGA based Viterbi decoder for 4D 8PSK TCM
Digital Signal Processing
Interlevel-correlated orthogonal space–time block codes based on the expanded signal constellation
Wireless Communications & Mobile Computing
| Hi-index | 754.84 |
A 2L-dimensional multiple phase-shift keyed (L×MPSK) signal set is obtained by forming the Cartesian product of L two-dimensional MPSK signal sets. A systematic approach to partitioning L×MPSK signal sets that is based on block coding is used. An encoder system approach is developed. It incorporates the design of a differential precoder, a systematic convolutional encoder, and a signal set mapper. Trellis-coded L×4PSK, L×8PSK, and L×16PSK modulation schemes are found for 1⩽L⩽4 and a variety of code rates and decoder complexities, many of which are fully transparent to discrete phase rotations of the signal set. The new codes achieve asymptotic coding gains up to 5.85 dB