New Generalized Multistream Spatial Modulation for Wireless Communications

New four‐dimensional signal constellations construction

“…For these purposes, in the paper, we consider 4D signal constellations. As we have already shown in [15], such an approach gives good results for MIMO systems, in particular for generalised multi‐stream SM. Similar to [5, 16–19], for construction of 4D signal constellations, we use the combination of signals of binary frequency shift keying (2FSK) and M ‐ary phase‐shift keying (MPSK)– 2FSK‐MPSK.…”

“…In [15], we considered the regular method of construction of 2FSK‐MPSK signals when M is even number. Compared to the results presented in [15], in this paper, we introduced a new method that is more efficient and can be used for arbitrary M to construct 2FSK‐MPSK signals optimised by means of maximal .…”

“…As a novel, multiple‐input multiple‐output (MIMO) scheme, spatial modulation (SM), has emerged as an attractive candidate to achieve the spectral and energy efficiency fulfilment of the next‐generation wireless communications. As of today, the issue of widely introduced MIMO‐SM is still relevant and the construction of new classes of efficient signals is essential [8–15]. We would like to pay special attention to the fact that we consider the constellations with atypical sizes (when the size of the constellation ), as such constellations are widely used in MIMO systems, and especially in SM systems [12, 13, 15].…”

Four-Dimensional Signal Constellations Based on Binary Frequency-Shift Keying and <i>M</i>-ary Amplitude-Phase-Shift Keying

“…Concerning SER characteristics good results are obtained for four-dimensional (4D) signals, which represent certain combinations of binary frequency shift keying (BFSK) and M-ary phase-shift keying (MPSK) modulations (BFSK-MPSK signals). Initially, several such signals were presented in combination with channel coding schemes [4] [5], and later, as the components of Spatial Modulation (SM) systems [6]. In both cases, the considered signals gave a remarkable performance.…”

“…Numerous new 4D BFSK-MPSK signal characteristics are listed in [7], where their advantage (according to SER) is shown compared to the best M-ary amplitude-phase shift keying (MAPSK) signals discussed in [1] [8]. The constellations with usual size ( 2 i M = , where i is a natural number), as well as atypical size ( 2 i M ≠ ) are presented in [6], whose use has been particularly convenient and fruitful in MIMO SM systems.…”