Abstract
In this paper we present a novel modulation technique for dual polarization communication systems, which reduces the error rate compared with the existent schemes. This modulation places the symbols in a 3D constellation, rather than the classic approach of 2D. Adjusting the phase of these symbols depending on the information bits, we are able to increase the bit rate. Hence, the proposed scheme conveys information by selecting both polarization state and the phase of radiated electromagnetic wave. We also analyse the performance of 3D Polarized Modulation (PMod) for different constellation sizes and we obtain a curve of rate adaptation. Finally, we compare the proposed 3D PMod with other existing schemes such as single polarization Phase Shift Keying (PSK) and double polarization Vertical Bell Laboratories Layer Space-Time (V-BLAST), both carrying the same number of information bits. The results show that 3D PMod always outperforms all other schemes, except for low order modulation. Therefore, we can conclude that 3D PMod is an excellent candidate for medium and high modulation order transmissions.
Highlights
Polarization dimension is being used massively in satellite communications during many decades
We introduce a PMod scheme using an arbitrary number of polarizations, which we entitled 3D Polarized Modulation (3D PMod) targeted to satellite networks
Bit Splitter splits the incoming bits into two groups of Nb and Lb bits; Phase Shift Keying (PSK) Mapper and ej perform the PSK mapping; Poincare Mapper maps the incoming bits into the Poincaresphere by using Tables VIII, IX, X and XI for L = 2, 4, 8, 16; Stokes−1 performs the conversion from Stokes to Jones vector described by (11)
Summary
Polarization dimension is being used massively in satellite communications during many decades. With the explosion of digital signal processing, the dynamic use of polarization schemes is taking an important role to increase the throughput and robustness Standards, such as Broadband Global Area Network (BGAN) or Digital Video Broadcast S2 (DVB-S2), are including the use of multiple polarization schemes in the incoming releases because the benefits of using dynamic polarization has been discussed in many works [1], [2]. Polarization Shift Keying (PolSK) is a double polarization scheme, which conveys information not by radiating a symbol modulated with in-phase and quadrature (I/Q) model, but in the selected polarization. Among the aforementioned schemes, Polarized Modulation (PMod) [7] conveys the information in the polarization hop, as with PolSK, and radiating an electromagnetic wave using in-phase/quadrature symbols, which are chosen from a modulation set depending on the information. 5) We compare and benchmark our proposals with other solutions such as Lattice Amplitude Modulation (LAM), Polarization Multiplexing or Single Polarization
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
