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On the Joint Optimization of Dispersion Matrices and Constellations for Near-Capacity Irregular Precoded Space-Time Shift Keying

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2 Author(s)
Sugiura, S. ; Toyota Central R&D Labs., Inc., Nagakute, Japan ; Hanzo, L.

Joint dispersion-matrix and constellation optimization algorithm is proposed, which is invoked for the recent space-time shift keying (STSK) scheme. More specifically, the theoretical gradients of the discrete-input continuous-output memoryless channel's (DCMC) capacity with respect to both a dispersion-matrix set and to the modem constellations are derived, which allows a substantial reduction in the computational complexity required for maximizing the system's capacity. Furthermore, we also conceive a near-capacity irregular-precoded STSK (IR-PSTSK) architecture, which is designed with the aid of extrinsic information transfer (EXIT) charts, while invoking STSK subcodes, which are optimized by using the proposed algorithm.

Published in:

Wireless Communications, IEEE Transactions on  (Volume:12 ,  Issue: 1 )