Space Shift Keying SSK Modulation: On the Transmit Diversity - Multiplexing Trade-OffReportar como inadecuado




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* Corresponding author 1 Division Télécoms et Réseaux L2S - Laboratoire des signaux et systèmes 2 IDCOM - Institute for Digital Communications

Abstract : Space Shift Keying SSK is a low-complexity modulation scheme for multiple-antenna wireless systems. In this paper, we analyze the transmit-diversity-multiplexing trade-off of SSK modulation with the main objective of developing practical solutions to achieve transmit-diversity. More specifically, the contributions of this paper are as follows: i we propose a practical scheme that achieves transmit-diversity equal to two for any number of antennas at the transmitter. The solution is based on the so-called Time-Orthogonal-Signal-Design TOSD principle introduced in, and adopts time-orthogonal shaping filters at the transmitter; ii we show that the TOSD principle with orthogonal shaping filters can be applied to the so-called Generalized SSK GSSK modulation scheme in, and that a transmit-diversity equal to two can still be obtained while increasing the data rate with respect to SSK modulation; and iii we propose a general encoding scheme that allows us to get transmit-diversity greater than two. The solution combines TOSD and GSSK principles in a unique fashion, and is flexible enough to accommodate various transmit-diversity gains by trading-off the number of transmit-antenna, the number of simultaneously-active transmit-antenna, and the achievable data rate. Furthermore, proposed methods and findings are substantiated via analysis and numerical simulations.





Autor: Marco Di Renzo - Harald Haas -

Fuente: https://hal.archives-ouvertes.fr/



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