Hybrid beam forming iterative design method with low complexity
A hybrid beam, low-complexity technology, applied in the field of low-complexity hybrid beamforming iterative design, can solve problems such as difficulty in obtaining accurate original channel state information, and achieve the effects of reducing signaling overhead and cost
Active Publication Date: 2017-09-05
XI AN JIAOTONG UNIV
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Abstract
The invention discloses a hybrid beam forming iterative design method with low complexity. The method comprises the following steps: 1) analog beam forming design: first step, randomly selecting a vector from a DFT network, and initializing an analog beam forming matrix; second step, fixing the analog beam forming matrix and a receiving end equivalent channel, and then restoring the receiving end equivalent channel through the analog beam forming matrix; third step, fixing an analog pre-encoding matrix, updating an analog receiving matrix by a receiving end through the receiving end equivalent channel, and updating a feedback equivalent channel; fourth step, restoring a transmitting end equivalent channel by a transmitting end by using the equivalent channel; fifth step, fixing the analog receiving matrix, and updating the analog pre-encoding matrix through the transmitting end equivalent channel; repeating the second step to the fifth step until algorithm convergence; 2) digital beam forming design: first step, calculating the equivalent channel according to the determined analog beam forming matrix; and second step, calculating a digital beam forming matrix by using a singular value decomposition method, and performing power allocation by using an irrigation method.
Application Domain
Spatial transmit diversity
Technology Topic
Low complexityBeamforming +6
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