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Method for implementing space division multiple access transmission for multi users in wireless communication system

A wireless communication system and space division multiple access technology, applied in the field of wireless communication, can solve the problem of no user grouping method, etc., and achieve the effects of increased complexity and good performance

Inactive Publication Date: 2008-07-23
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Application Information

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Problems solved by technology

[0004] For the problem of how to further reduce the interference between users, the interference between users can be reduced by grouping multiple users at the transmitting end, but there is no specially designed user grouping method yet

Method used

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  • Method for implementing space division multiple access transmission for multi users in wireless communication system
  • Method for implementing space division multiple access transmission for multi users in wireless communication system
  • Method for implementing space division multiple access transmission for multi users in wireless communication system

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Embodiment Construction

[0021] The present invention focuses on the SDMA wireless communication system including two users to illustrate the method of user grouping, but the scope of application of the present invention is not limited to the SDMA wireless communication system including two users.

[0022] Implementation steps of the transmitter according to the present invention:

[0023] (1) A Node-B equipped with multiple antennas first divides the transmitting antennas into two groups (first antenna group and second antenna group), one group (first antenna group) is used to support "good users", the other (The second antenna group) is used to support "bad users". The grouping of the transmitting antennas is a random combination, and other methods can also be used, such as grouping based on channel statistical information.

[0024] (2) The Node-B constructs a candidate set of "good users" (the first user group) and a candidate set of "bad users" (the second user group) according to user feedback inform...

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Abstract

A method which is provided and realizes space division multiple access transmission for a plurality of users in a radio communication system according to the invention comprises first dividing a plurality of transmitting antennas into a first antenna group which is corresponded to a first user group and has signal-to-noise ratio of a high transmission channel, and a second antenna group which is corresponded to a second user group and has signal-to-noise ratio of a low transmission channel, second, respectively confirming a candidate user of the first use group and a candidate user of the second use group in a plurality of the users according to the first antennas group and the second antenna group, third, respectively choosing a first user and a second user which is used to form space division multiple access grouping from the candidate user of the first use group and the candidate user of the second use group according to power distributing condition and service quality requirement, and fourth, transmitting data of the first user and the second user in the space division multiple access grouping from the base station by utilizing the first antenna group and the second antenna group through adopting space division multiple access mode to the first user and the second user.

Description

Technical field [0001] The present invention belongs to the field of wireless communication technology, and specifically relates to a method for realizing space division multiple access transmission for multiple users in a wireless communication system, which reduces interference between users in the space division multiple access system by grouping users . Background technique [0002] Spatial Division Multiple Access (SDMA) is an effective wireless communication method to improve system capacity. In SDMA, the base station (Node-B) is configured with multiple antennas, the Node-B communicates with multiple user equipments (UEs) at the same time, and the UE is configured with one or more antennas. SDMA mainly uses different transmit antenna groups to communicate with different UEs to generate differences in spatial channel characteristics between multiple users, so as to achieve multi-user signal transmission at the same time, frequency, and code domain. [0003] In the prior art...

Claims

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Application Information

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IPC IPC(8): H04B7/04H04B7/06H04L1/06H04Q7/36H04J15/00H04J99/00
Inventor 白伟金永鹤付景兴李小强
Owner BEIJING SAMSUNG TELECOM R&D CENT
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