Millimeter wave mimo channel estimation method for multi-antenna panel structure
An antenna panel and channel estimation technology, applied to radio transmission systems, baseband system components, electrical components, etc., can solve the problems of channel information differences, different launch angles, millimeter wave systems cannot directly use millimeter wave MIMO systems, etc. To achieve the effect of guaranteeing the use effect, broad application prospects, improving efficiency and accuracy
Active Publication Date: 2021-11-16
NANJING UNIV OF POSTS & TELECOMM
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[0004] Channel estimation is the basis for effective communication and precoding in millimeter-wave systems. Due to the large number of antennas at the base station in the millimeter-wave MIMO system with multi-antenna panel structure, and the effective path transmission angles of signals between antenna panels and users are different, Therefore, there is a certain difference in the channel information between each antenna panel and the user, so that the channel estimation method of the traditional millimeter-wave system cannot be directly used in the millimeter-wave MIMO system with a multi-antenna panel structure.
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[0053] Such as figure 1 As shown, the present invention discloses a millimeter-wave MIMO channel estimation method with a multi-antenna panel structure, comprising the following steps:
[0054] S1. Construct a millimeter-wave MIMO system using a multi-antenna panel with a partially connected structure. The system includes a base station transmitter and a user receiver.
[0055] S2. Each antenna panel transmits a pilot sequence to the user receiving end in multiple time slots.
[0056] S3. The receiving end of the user receives signals sent by each antenna panel in different time slots and stores the received signals in blocks.
[0057] S4. The receiving end of the user uses a joint compressed sensing algorithm to jointly restore the channels of each antenna panel.
[0058] S1 specifically includes the following steps:
[0059] Construct a millimeter-wave MIMO system using a multi-antenna panel with a partially connected structure. The system includes a base station transmit...
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The present invention discloses a millimeter-wave MIMO channel estimation method with a multi-antenna panel structure, including the following steps: S1, constructing a millimeter-wave MIMO system with a multi-antenna panel with a partially connected structure, the system includes a base station transmitter and a user receiver; S2 , each antenna panel transmits a pilot sequence to the user receiving end in multiple time slots; S3, the user receiving end receives signals sent by each antenna panel in different time slots and stores the received signal in blocks; S4, the user receiving end The user receiving end uses the joint compressed sensing algorithm to jointly recover the channels of each antenna panel. The method of the invention enables the system to jointly restore the channel information between each antenna panel and the user with relatively low complexity under the premise of ensuring the channel estimation accuracy.
Description
technical field [0001] The present invention relates to a millimeter wave MIMO channel estimation method, in particular to a millimeter wave MIMO channel estimation method with a multi-antenna panel structure, which belongs to the technical field of millimeter wave communication. Background technique [0002] In an existing massive MIMO (Multiple-Input Multiple-Output) system, a base station is equipped with a large number of antennas, and the distance between adjacent antennas is small. In order to ensure the independence between the antennas, millimeter waves with shorter wavelengths can be used as signal carriers for data transmission. [0003] This millimeter-wave massive MIMO system mainly adopts two antenna connection structures, fully connected and partially connected. Wherein, the fully connected structure means that each radio frequency link is connected with all array antennas. Compared with the fully connected structure, the hardware complexity of the partially ...
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IPC IPC(8): H04L25/02H04B7/0413
Inventor 刘旭谢洋赵学健杨龙祥朱洪波
Owner NANJING UNIV OF POSTS & TELECOMM