An Antenna Selection-Power Adaptive Spatial Modulation Method
An antenna selection and self-adaptation technology, applied in the field of communication, can solve the problems of weak anti-interference ability of MIMO system, increasing the minimum Euclidean distance between constellation points, etc.
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[0051] The specific embodiments of the present invention will be given below in conjunction with the accompanying drawings; it should be noted that the parameters in the embodiments do not affect the generality of the present invention.
[0052] Assume that the information transmission rate of the transmitter is m=3 bits / time, and the number of antennas at the transmitter is N t = 2, the number of antennas at the receiving end N r =1, considering that the modulation mode is 4-QAM, that is, the constellation point set D={-0.7071-0.7071i,-0.7071+0.7071i,0.7071-0.7071i,0.7071+0.7071i}. Alternative power transfer schemes are as follows:
[0053] Φ={diag([p 11 ,p 12 ]),diag([p 21 ,p 22 ]),...,diag([p r1 ,p r2 ])}
[0054] in, p ik >0, here we assume that the initial value is p 11 =1.9,p 12 =0.1, final value p r1 =0.1,p 12 =1.9, The step size Δ=0.1, that is, p i1 =p 11 -(i-1)Δ,p i2 =p 12 +(i-1)Δ.
[0055] Then for each scheme of the candidate power allocation s...
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