A Low Complexity Detection Method for Spatial Modulation System
A space modulation, low-complexity technology, applied in wireless communication, electrical components, etc., can solve high-complexity problems, achieve the effect of reducing the number of traversals and reducing the complexity of detection
Inactive Publication Date: 2017-11-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0003] What the present invention aims to solve is to propose a low-complexity spatial modulation system detection method for the high complexity problems that exist in the traditional ML detection algorithm when there are more transmitting antennas and higher modulation orders
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[0013] Below in conjunction with accompanying drawing, describe technical scheme of the present invention in detail:
[0014] The space modulation system detection method of the present invention mainly selects a specific subset of the constellation symbol neighborhood, and then performs the first traversal search, thereby determining the bit information for activating the transmitting antenna or having the minimum Euclidean distance according to the selected M minimum Euclidean distance results. The quadrant of the symbol corresponding to the combination of K-distances is used to determine the quadrant of the transmitted symbol, and then a second search is performed. The present invention performs the first traversal through the selection of a specific subset of four quadrants, which can reduce the number of possible detection and transmission signals to be searched, thereby effectively reducing the detection complexity of the receiver, and obtaining better Detection performa...
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The invention relates to mobile communication technology, in particular to a low-complexity space modulation system detection method. The present invention mainly selects a specific subset of the constellation symbol neighborhood, and then performs the first traversal search, so as to determine the bit information of the activated transmitting antenna or the combination corresponding to the minimum Euclidean distance according to the selected M minimum Euclidean distance results. Determine the quadrant where the symbol is located, and then perform a secondary search. The present invention performs the first traversal through the selection of a specific subset of four quadrants, which can reduce the number of possible detected transmission signals to be searched, thereby effectively reducing the detection complexity of the receiver, and obtaining better Detection performance. The invention is especially suitable for the detection method of the spatial modulation system.
Description
technical field [0001] The invention relates to mobile communication technology, in particular to a low-complexity space modulation system detection method. Background technique [0002] Spatial Modulation (SM) technology divides a certain number of information bits into two parts, one part is used to select the transmit antenna to be activated, the other part is used to modulate and map into constellation symbols, and the mapped constellation symbols pass through the selected transmit antenna transmits, and the unselected transmit antennas are silent. Using the SM technology can avoid inter-channel interference and transmission antenna synchronization problems existing in a MIMO (Multiple-Input Multiple-Output) system. The SM system only activates one transmitting antenna at a time, and the other transmitting antennas are silent. However, the generalized spatial modulation system (Generalized Spatial Modulation, GSM) technology can select multiple transmitting antennas, a...
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IPC IPC(8): H04W24/02
Inventor 肖悦张云娇范世文何旭李少谦
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA