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Method for determining optimal precoding parameter and precoding device of adjustable complexity

A technology of precoding and precoding, applied in the field of precoding equipment used to determine optimal precoding parameters and adjustable complexity, it can solve the problems of not considering coherence time, change, not considering, etc., and achieve computational complexity Enhanced, Adaptable Effects

Inactive Publication Date: 2017-11-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] However, this solution (see image 3 ) does not consider the case where the coherence time is not known a priori and varies with scheduled users, or where different hardware capabilities are available

Method used

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  • Method for determining optimal precoding parameter and precoding device of adjustable complexity
  • Method for determining optimal precoding parameter and precoding device of adjustable complexity
  • Method for determining optimal precoding parameter and precoding device of adjustable complexity

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Embodiment Construction

[0088] In the following detailed description, reference is made to the accompanying drawings which form a part hereof, and are shown by way of illustration of specific aspects in which the disclosure may be practiced. It is to be understood that other aspects may be utilized and structural or logical changes may be made without departing from the scope of the present disclosure. Accordingly, the following detailed description should not be taken as limiting, and the scope of the present disclosure is defined by the appended claims.

[0089] It should be understood that notes made in connection with a described method may also hold for a corresponding device or system configured to perform the method, and vice versa. For example, if specific method steps are described, a corresponding device may include means for performing the described method steps, even if such means are not explicitly described or shown in the figures. Furthermore, it should be understood that the features...

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Abstract

A method (400, 500, 600) for determining a value, Jopt, of a precoding parameter, J, for precoding a sequence of transmit samples, s(t), for transmission in a multi-antenna system, comprises: obtaining (401) values of an objective function, u(J), based on a transmission period, TT, for transmitting the precoded sequence of transmit samples, s(t), a coherence time, TC, of a channel and a precoding performance function, f(J), and characteristics of a precoding performance function, f(J), the transmission period TT depending on a training period, TTR, for channel estimation, a precoding period, TP, for precoding the sequence of transmit samples, s(t), and the coherence time, TC, of the channel; and applying (402) an optimality criterion to the values of the objective function, u(J), with respect to the precoding parameter, J, in order to obtain the value Jopt.

Description

technical field [0001] The present disclosure relates to a method for determining optimal precoding parameters for precoding a sequence of transmit samples transmitted in a multi-antenna system, and a precoding device with adjustable complexity for precoding in multiple The sequence of transmitted samples transmitted in the antenna system. The invention also relates to a precoding system implementing a variable complexity / variable performance precoding strategy, utilizing the method in order to perform optimal precoding taking into account the precoding quality and the contextual properties of the transmission medium, especially the coherence time. In particular, the present disclosure relates to techniques for performance-maximizing adaptive MIMO precoding based on a trade-off between precoder complexity and quality. Background technique [0002] In modern networks, the existence of multiple antenna devices has become a reality with the deployment of long term evolution (l...

Claims

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Application Information

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IPC IPC(8): H04B7/02H04B7/0452H04B7/0456
CPCH04B7/02H04B7/0452H04B7/0456H04B7/0413
Inventor 卢卡·罗斯阿克塞尔·米勒何高宁
Owner HUAWEI TECH CO LTD