A semi-blind channel estimation method and device
A channel estimation and blind channel technology, which is applied in the field of channel estimation, can solve the problems that the least squares channel estimation performance needs to be improved, and achieve the effect of excellent performance
Active Publication Date: 2021-11-16
深圳市天凯利信息科技有限公司
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[0004] The present invention discloses a semi-blind channel estimation method and device to at least solve the problem in the related art that the performance of the least squares channel estimation based on the training sequence needs to be improved when the channel parameters are unknown in the multi-antenna overlapping multiplexing system
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[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.
[0053] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermo...
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The present invention discloses a semi-blind channel estimation method and device. The semi-blind channel estimation method includes: step S1, acquiring the data containing the first training sequence received by the receiving end; step S2, according to the data and the pre-stored first The training sequence is subjected to minimum mean square error channel estimation, thereby obtaining the channel parameter matrix; step S3, using the least squares detection algorithm to detect the first training sequence, thereby obtaining estimated data; step S4, using the estimated data as the second training sequence , and replace the first training sequence in step S2 with the second training sequence, and execute the above steps S2 and S3 cyclically on the second training sequence until the channel parameter matrix obtained last time is the same as the channel parameter matrix obtained this time , then the loop is stopped to estimate the final channel parameter matrix. The present invention can estimate the random channel parameter matrix in the multi-antenna overlapping multiplexing system through the above technical scheme, and the performance is better than that of the least squares channel estimation based on the training sequence.
Description
technical field [0001] The present invention relates to the field of channel estimation, in particular to a semi-blind channel estimation method and device. Background technique [0002] In the communication system, the overlap multiplexing coding method is used for data coding, which can greatly improve the transmission spectrum efficiency of the system, and the current overlap multiplexing system OvXDM (X represents any domain, including: time domain T, space domain S, frequency domain F , code-division domain C or hybrid domain H, etc.), and adopting multi-antenna technology at the same time can increase the transmission rate of the system. However, the multi-antenna overlapping multiplexing system needs to perform channel estimation processing when the channel parameters are unknown, and the performance of least squares channel estimation based on training sequences needs to be improved. [0003] Aiming at the problems in the related technologies, no effective solution ...
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IPC IPC(8): H04L25/02
CPCH04L25/0238H04L25/0242H04L25/0224H04L25/0256H04L25/021H04L2025/03636H04B7/0408H04J3/14H04L1/0059
Inventor 不公告发明人
Owner 深圳市天凯利信息科技有限公司