Space Shift Keying (SSK) Modulation: On the Transmit Diversity / Multiplexing Trade-Off

Marco Di Renzo 1, * Harald Haas 2
* Corresponding author
1 Division Télécoms et Réseaux - L2S
L2S - Laboratoire des signaux et systèmes : 1289
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.
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Marco Di Renzo, Harald Haas. Space Shift Keying (SSK) Modulation: On the Transmit Diversity / Multiplexing Trade-Off. IEEE International Conference on Communications (ICC 2011), Jun 2011, Kyoto, Japan. pp.1-6, ⟨10.1109/icc.2011.5963455⟩. ⟨hal-00658687⟩

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