Abstract
In this treatise, first of all, we conceive a generic multiple-symbol differential sphere detection (MSDSD) solution for both single- and multiple-antenna-based noncoherent schemes in both uncoded and coded scenarios, where the high-mobility aeronautical Ricean fading features are taken into account. The bespoke design is the first MSDSD solution in the open literature that is applicable to the generic differential space-time modulation (DSTM) for transmission over Ricean fading. In the light of this development, the recently developed differential spatial modulation and its diversity counterpart of differential space-time block coding using index shift keying are specifically recommended for aeronautical applications owing to their low-complexity single-RF and finite-cardinality features. Moreover, we further devise a noncoherent decision-feedback differential detection and a channel-state information estimation aided coherent detection, which also take into account the same Ricean features. Finally, the advantages of the proposed techniques in different scenarios lead us to propose for the aeronautical systems to adaptively: 1) switch between coherent and non-coherent schemes; 2) switch between single- and multiple-antenna-based schemes as well as; and 3) switch between high-diversity and high-throughput DSTM schemes.
Highlights
The modernization of Air Traffic Management (ATM) is currently undertaken by the Single European Sky ATM Research (SESAR) in Europe and by the Generation Air Transportation System (NextGen) in the US, which demand substantial updates to the existing aeronautical networks
We propose for the aeronautical systems to adaptively switch between coherent and noncoherent schemes based on fd
We conceived both the pilot-based coherent detection as well as noncoherent Decision-Feedback Differential Detection (DFDD) and Multiple-Symbol Differential Sphere Detection (MSDSD) for both single and multiple Transmit Antennas (TAs) based systems, which take into account the aeronautical Ricean fading features
Summary
The financial support of the EPSRC projects EP/Noo4558/1 and EP/PO34284/1, as well as of the European Research Council’s Advanced Fellow Grant under the QuantCom project and of the Royal Society’s Wolfson Research Merit Award and of the GRCF is gratefully acknowledged. It is of practical importance to employ multiple airborne antennas, which offers a beneficial power-efficiency improvement in a variety of airborne scenarios [34]–[36] In contrast to DPSK, the DSTM’s matrix-based differential encoding may result in infinitecardinality of arbitrary transmit signals [28] The MSDSD and DFDD solutions are capable of outperforming their coherent counterparts at TABLE I: Summary of noncoherent detectors of DPSK over Ricean fading channels.
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