Reconstruction method and device for realizing interference cancellation in wireless communication system

Abstract

The invention discloses a reconstruction method for realizing interference cancellation in a wireless communication system. The method comprises the following steps of: dividing a storage space for storing filtered data of a previous user according to maximum value of a conflict window; and acquiring filtered data of a current user and the filtered data of the previous user adjacent to the current user from the filtered branch data, performing reconstructing operation with original reconstructed data and performing interference cancellation. The invention also discloses a reconstruction device for realizing the interference cancellation in the wireless communication system. A reconstruction implementing unit in the device is used for dividing the storage space for storing the filtered data of the previous user according to the maximum value of the conflict window, acquiring the filtered data of the current user and the filtered data of the previous user adjacent to the current user from the filtered branch data, performing reconstructing operation with the original reconstructed data and performing the interference cancellation. By the method and the device, the problem of data conflict between the users is solved at a lower cost and higher performance.

Description

technical field [0001] The invention belongs to the field of wireless communication systems, and in particular relates to a reconstruction method and device for realizing interference cancellation in a wireless communication system. Background technique [0002] With the rapid development of 3G technology, data services have also been widely popularized, and the data volume and power of a single user are also constantly increasing, so the inter-user interference among system users is also increasing. In order to reduce the interference between users and improve the decoding performance of the system, many high-end base station baseband chips have successively added interference cancellation functions to improve the processing capacity of the entire system. Interference cancellation is mainly to reconstruct the user data correctly decoded by the base station processor, and reconstruction is generally used to realize interference cancellation in wireless communication systems....

AI Technical Summary

Problems solved by technology

The disadvantage of adopting the processing method of Solution 1 is that user 2 must wait for user 1 to be completely reconfigured before starting user 2 instead of starting user 2 after user 1 does a small part, and the flow is interrupted, resulting in system performance degradation and Uncontrollable, control complexity rises sharply

It can be seen that the disadvantage of adopting the processing method of Scheme 2 is that this processing method is to increase the cost in exchange for system performance, that is to say, in order to improve the system performance, after the normal reconstruction operation is completed, the result obtained is not The complete reconstructed data, therefore, needs to be combined with the reconstructed data through the above-mentioned subsequent processing process, so that an additional reconstruction RAM is required for the above-mentioned subsequent processing process, and the reconstruction RAM is relatively large; when using reconstruction to achieve interference cancellation In the process, reconfiguration is related to various channels, so there must be multiple reconfiguration RAMs

To sum up, adopting any of the above-mentioned reconfiguration schemes has major defects, either leading to system performance degradation and high control complexity, or system performance can be improved but additional system manufacturing costs are required

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