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We introduce a model of a combination of particular low density parity check (LDPC) code and quadrature-quadrature phase shift keying (Q2PSK) constellation for the application of the downlink of the unmanned aerial vehicle (UAV) data chain. This model is a modification of the combination of LDPC code and constant envelope Q2PSK (CEQ2PSK) constellation. It achieves higher bandwidth efficiency of 4/3...
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