Hybrid precoding method and system for beam offset compensation
An offset compensation and precoding technology, which is applied in transmission systems, radio transmission systems, electrical components, etc., can solve the problems of high computational complexity and high hardware cost, and achieve improved signal-to-noise ratio, low hardware cost, and improved beam deviation The effect of target users
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[0031] Consider a mmWave massive MIMO system where the carrier center frequency f c =28GHz, the bandwidth is 100MHz, and the transmitting antenna is N t =8, receiving antenna N r =[8:16:152], the antenna spacing d is the center carrier frequency wavelength λ c half of the number of paths N p =8, the angle of arrival (Angle of Arrival, AoA) and the angle of departure (Angle of Departure, AoD) are randomly generated within the range (-π, π), and the number of subcarriers K=128. A hybrid precoding method for beam offset compensation provided by the present invention is applied to the system to compensate the beam offset phenomenon in the millimeter-wave massive MIMO system, thereby improving system capacity. Specifically include the following steps:
[0032] (1) By averaging the channel state information H[k] of subcarriers on different frequencies, a frequency-independent equivalent channel is obtained
[0033] (2) Extract the average channel matrix The phase of the ana...
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