Signal detection method and device of MIMO (multiple input multiple output) system
A signal detection and symbol technology, which is applied in the signal detection field of MIMO system, can solve the problems of high computational complexity of the breadth-first algorithm, reduce the number of reserved nodes, and limit the number of visited nodes, so as not to reduce the detection performance, and the hardware implementation circuit is simple , the effect of low power consumption
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[0043] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.
[0044] figure 1 Shown is a flowchart of a signal detection method of a MIMO system according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:
[0045] S1. Process the received signal and use the known channel matrix and possible transmission symbols to form a search tree;
[0046] Specifically: sort each row of the channel matrix, and then triangulate the sorted channel matrix using the possible transmission symbols to form a search tree. The sorting method is from small to large (if the number of possible nodes in the layer is No more than K) / gain from large to small (if all possible nodes of the layer are more than K), sorting can speed up the search...
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