Spatial modulation method using stacked Alamouti coding mapping
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A technology of code mapping and space modulation, applied in space transmit diversity, transmission system, electrical components, etc.
Active Publication Date: 2019-02-12
XI AN JIAOTONG UNIV
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However, the SM-OSTBC method is only suitable for MIMO systems with an even number of transmit antennas and radio frequency (RF) links, and at least 4 radio frequency links need to be configured at the transmit end
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[0096] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0097] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...
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Abstract
The invention discloses a spatial modulation method using stacked Alamouti coding mapping. The spatial constellation in the spatial modulation method using the stacked Alamouti coding mapping is defined as containing all possible combinations of activated antennas; and corresponding symbols in stacked codes are activated according to a specific SC codeword in the spatial constellation to form a SA-SM transmission signal for transmission. The invention is suitable for any even number of transmitting antennas, and is suitable for any number of activated antennas between 1 and n<T>; when the number of the activated antennas is the same, the SA-SM scheme provided by the invention carries more symbols than a spatial modulation orthogonal space-time coding scheme, therefore, higher spectral efficiency can be obtained; the SA-SM scheme provided by the invention has a never disappeared determinant feature without any parameter or matrix optimization, and the disappeared determinant feature canensure that the SA-SM scheme obtains second-order emission diversity; and finally, the SA-SM scheme provided by the invention has a block orthogonal structure on the coding structure, therefore, a low-complexity QRDM detection method can be adopted to perform decoding, which has very low decoding complexity.
Description
【Technical field】 [0001] The invention belongs to the technical field of transmit diversity transmission in a multi-antenna wireless communication system, and in particular relates to a space modulation method using stacked Alamouti coding mapping. 【Background technique】 [0002] Spatial Modulation (Spatial Modulation, SM) (R. Mesleh, H. Haas, S. Sinanovic, et al., "Spatial modulation," IEEE Trans. Veh. Technol., vol.57, no.4, pp.2228- 2241, July2008.) and Space Shift Keying (SSK) (J.Jeganathan, A.Ghrayeb, L.Szczecinski, et al., "Space shift keying modulation for MIMO channels," IEEETrans.Wireless Commun. , vol.8, no.7, pp.3692-3703, July 2009.) Using spatial dimensions to transmit information, compared with traditional MIMO schemes, additional spectral efficiency can be obtained. Therefore, in recent years, SM and SSK have received extensive attention as a novel MIMO transmission technology. However, SM and SSK only activate one antenna per transmission, so they cannot ac...
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