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Channel estimation method and apparatus suitable for single-antenna interference cancellation technology

A channel estimation and interference cancellation technology, which is applied in channel estimation, multi-modulation transmitter/receiver arrangement, transmitter/receiver shaping network, etc., can solve the problems of result deviation and reliability decline

Active Publication Date: 2020-02-21
LEADCORE TECH +2
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Problems solved by technology

Due to the existence of asynchronous interference, if the channel impulse response is estimated purely by the training sequence, the reliability will decrease, and interference may be introduced to cause the result to deviate greatly from the expected channel estimation value. Therefore, it is necessary to make improvements in channel estimation to make the channel estimation value more accurate. Close to the desired channel value and improve the ability of the decoupling linear filter to suppress asynchronous interference

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  • Channel estimation method and apparatus suitable for single-antenna interference cancellation technology
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  • Channel estimation method and apparatus suitable for single-antenna interference cancellation technology

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[0039] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that the drawings are all in a very simplified form and use imprecise ratios, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0040] The present invention proposes a channel estimation device applicable to the single-antenna interference cancellation technology (SAIC) of decoupling linear filtering nonlinear equalization, and its position in the decoupling linear filtering nonlinear equalization SAIC system is as follows: figure 1 As shown in 102, the function is to perform channel estimation on the bits divided into two channels of single data after double sampling in step 101, and provide channel estimation values ​​for the CCI filte...

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Abstract

The invention provides a channel estimation method suitable for single-antenna interference elimination technology. The method comprises steps of: pre-equalizing a signal so as to obtain a signal sequence estimation value; reducing the sequence estimation value into a burst sequence form and determining direction determination through signal energy; and executing adaptive sequence estimation on a half sequence including a training sequence according to the reference value of the obtained burst sequence and the direction determination. The method comprises three steps of: pre-processing, sequence reduction and direction determination and adaptive channel estimation. The invention also provides a channel estimation device suitable for the single-antenna interference elimination technology of decoupling linear filtering nonlinear balancing method. Thus, asynchronous interference elimination performance is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a channel estimation method and device suitable for single-antenna interference elimination technology. Background technique [0002] Co-channel interference (CCI, co-channel interference) is generated because multiple users transmit information in the same channel. In the GSM system where adjacent cells communicate, co-channel interference as a major interference must be considered. Aiming at the conditions of the terminal in the downlink, the single-antenna-interference-cancellation technology (SAIC, single-antenna-interference-cancellation) is undoubtedly a better method to solve the co-channel interference suppression problem. [0003] Conventional SAIC methods include MIC (Mono Interference Cancellation), joint detection, decoupling linear filtering nonlinear equalization and other methods. MIC has insufficient freedom and harsh conditions of use, esp...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L25/03H04L27/00
CPCH04L25/0202H04L25/03006H04L25/03178H04L27/0008
Inventor 祁卿峰周小林毕伟祥王紫鹏
Owner LEADCORE TECH
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