mimo signal detection method and device
A signal detection and signal technology, applied in the field of communication, can solve the problems such as difficult to determine the selection of parameters, high complexity, and difficult application
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Embodiment 1
[0050] Such as figure 1 As shown, the MIMO signal detection method of this embodiment includes the following steps:
[0051] Step S1: Preliminarily detect the MIMO signal according to the preset method 1 to the preset method m, and obtain the first estimated value to the mth estimate in, m is an integer not less than 2, N is the number of antennas transmitting MIMO signals; MIMO signals are signals received by the MIMO system at a certain moment, a MIMO signal contains multiple inputs, and the number of inputs is equal to the number of antennas sent in the antenna matrix The number of antennas, MIMO signals are usually constructed as a vector containing elements equal to the number of antennas;
[0052] The first estimated value to the mth estimated value are all row vectors composed of N elements equal to the number of transmitting antennas in the antenna matrix; the value of m is obtained according to the requirements for computing performance and the computing power o...
Embodiment 2
[0062] In this embodiment, on the basis of the previous embodiment, the specific step S3 is as follows:
[0063] Step S3.1: According to S New The dimension m*n builds an orthogonal table L M (m n ); Wherein, what M represents is the number of times that needs the orthogonal test; The construction of orthogonal table is to select the orthogonal table that meets the requirements of this embodiment from the existing mature orthogonal table that has been built, and has the realization Simple and fast features;
[0064] E oq = Σ u = 1 M R u × W uoq Σ u = 1 ...
Embodiment 3
[0078] The MIMO signal detection method described in this embodiment is applied to the following system, which adopts 4-QAM modulation and a MIMO system with 3*3 antenna configuration. The signal sent by the sending end is: [-1+i, 1-i, -1+i], and the receiving end receives the signal r ^ = [ 5.23250 - 1.1947 i , - 2.6069 - 3.4946 i , - 4.5195 + 1.7132 i ]
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