A system, comprising - an antenna (A, A00), comprising a radiating element and a feeding unit, wherein the radiating element is configured to perform conversion between an electromagnetic wave in space and an electrical signal in a circuit, and the feeding unit is configured to transfer the electrical signal between the feeding unit and the radiating element; - a lighting system, wherein the antenna (A, A00) is integrated with the lighting system, wherein the lighting system comprises a protective cover (L1, L2, L10, L20) and a light source disposed inside the protective cover (L1, L2, L10, L20); and both the radiating element and the feeding unit of the antenna (A, A00) are integrated with the protective cover (L1, L2, L10, L20) of the lighting system, wherein the radiating element is attached to a surface of a cover body, in a forward direction of the light source, of the protective cover (L1, L2, L10, L20); and one part of the feeding unit is integrated with the protective cover (L1, L2, L10, L20), and is electrically connected to the radiating element, and the other part of the feeding unit supports an electrical connection to a signal processing device, wherein the cover body part to which the radiating element is attached is of a non-conductive material, and is disposed as a substrate of the antenna (A, A00), characterised in that the feeding unit comprises a feeding metal conductor (A21-1), there is a gap in the cover body to which the radiating element is attached, and the feeding metal conductor is disposed in the gap; and the feeding metal conductor passes through the cover body via the gap, one end is in direct contact with the radiating element, and the other end supports an electrical connection to a signal transmission line, wherein the signal transmission line is configured to transmit an electrical signal between the feeding metal conductor and the signal processing device. - an antenna (A, A00), comprising a radiating element and a feeding unit, wherein the radiating element is configured to perform conversion between an electromagnetic wave in space and an electrical signal in a circuit, and the feeding unit is configured to transfer the electrical signal between the feeding unit and the radiating element; - a lighting system, the antenna (A, A00) is integrated with the lighting system, wherein the lighting system comprises a protective cover (L1, L2, L10, L20) and a light source disposed inside the protective cover (L1, L2, L10, L20); and both the radiating element and the feeding unit of the antenna (A, A00) are integrated with the protective cover (L1, L2, L10, L20) of the lighting system, wherein the radiating element is attached to a surface of a cover body, in a forward direction of the light source, of the protective cover (L1, L2, L10, L20); and one part of the feeding unit is integrated with the protective cover (L1, L2, L10, L20), and is electrically connected to the radiating element, and the other part of the feeding unit supports an electrical connection to a signal processing device, wherein the cover body part to which the radiating element is attached is of a non-conductive material, and is disposed as a substrate of the antenna (A, A00), characterised in that the feeding unit comprises a feeding metal conductor (A21-1), there is a gap in the cover body to which the radiating element is attached, and the feeding metal conductor is disposed in the gap; and the feeding metal conductor passes through the cover body via the gap, one end is in direct contact with the radiating element, and the other end supports an electrical connection to a signal transmission line, wherein the signal transmission line is configured to transmit an electrical signal between the feeding metal conductor and the signal processing device.