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Differential beam spatial modulation transmission and blind detection method assisted by sending precoding

A technology of spatial modulation and blind detection, applied in transmission modification based on link quality, error prevention/detection through diversity reception, transmission system, etc., can solve the problems of differential spatial modulation blind detection bit error rate performance loss and so on

Active Publication Date: 2020-08-25
SHANDONG UNIV +1
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Problems solved by technology

Although the blind detection of spatial modulation signals can be realized based on the differential mechanism, compared with the traditional spatial modulation transmission scheme, the bit error rate performance loss of differential spatial modulation blind detection is greater

Method used

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  • Differential beam spatial modulation transmission and blind detection method assisted by sending precoding
  • Differential beam spatial modulation transmission and blind detection method assisted by sending precoding
  • Differential beam spatial modulation transmission and blind detection method assisted by sending precoding

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Embodiment 1

[0048] This embodiment considers the uplink transmission scenario of the Internet of Things or wireless sensor network, such as figure 1 In the shown differential beam spatial modulation time-division duplex multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) communication system, the transmitting end and the receiving end are respectively equipped with N a and N b Antennas, and the two perform differential beam spatial modulation transmission and blind detection through a quasi-static flat Rayleigh fading channel. Differential beam space modulation maps information bits to space-time transmission blocks in beam space, that is, utilizes time dimension and beam index to carry additional information bits. In this communication system, the beam spatially modulated signal vector transmitted by the jth time slot in the tth transmission block at the transmitter is 1≤j≤N s , N s ≤N a , superscript T means transpose, s tj Only the i-th element in is non-zero, ...

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Abstract

The invention relates to a differential beam spatial modulation transmission and blind detection method assisted by sending precoding, and belongs to the technical field of wireless communication. According to the invention, in combination with the idea of beam switching, information bits are mapped to a space-time sending block in a beam space by means of a precoding technology. The method comprises: firstly, setting the column number of a differential beam spatial modulation sending block matrix to be equal to the dimension number of a sending signal vector; then, according to a set closurerequirement of differential transmission, constructing a space-time sending block total set and a differential beam space modulation sending block mapping set of a beam space; then constructing a precoding matrix based on a singular value decomposition mode, using the precoding matrix for differential beam space modulation transmission of a transmitting end; and finally performing differential beam space modulation signal blind detection by a receiving end. The differential beam spatial modulation method designed by the invention has good anti-noise performance, effectively improves the reliability of differential transmission of a communication system, and has practicability.

Description

technical field [0001] The invention relates to a transmission precoding-assisted differential beam space modulation transmission and blind detection method, which belongs to the technical field of wireless communication. Background technique [0002] Spatial modulation is a novel multi-antenna technology based on a switching mechanism, which transmits information simultaneously using the spatial domain and the amplitude / phase domain by activating different antennas or beams in different time slots. Compared with traditional multi-antenna technology, spatial modulation only uses a small number of radio frequency links, and has the advantages of low hardware cost, high energy efficiency and low system complexity, and has great application prospects in future communication systems [R.Y.Mesleh, H.Haas, S. Sinanovic, C.W. Ahn and S. Yun, "Spatial Modulation," IEEE Transactions on Vehicular Technology, vol.57, no.4, pp.2228-2241, 2008.]. The performance of signal detection direc...

Claims

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Application Information

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IPC IPC(8): H04B7/0456H04L1/06H04L1/00H04B7/0413
CPCH04B7/0413H04B7/0456H04L1/0038H04L1/0612
Inventor 郭帅帅续澄澄张海霞张彭
Owner SHANDONG UNIV
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