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Interference suppression merging method and receiver

An interference suppression, local user technology, applied in the direction of diversity/multi-antenna system, space transmit diversity, etc., can solve the problems such as the inability to effectively eliminate the interference between users and the inflexibility of the heterogeneous network.

Inactive Publication Date: 2012-01-18
ZTE CORP
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Problems solved by technology

[0006] The present invention provides an interference suppression combination method and device, which solves the problem that the existing interference suppression combination method cannot effectively eliminate the interference between users and is not flexible enough to apply to heterogeneous networks

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  • Interference suppression merging method and receiver
  • Interference suppression merging method and receiver
  • Interference suppression merging method and receiver

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Embodiment Construction

[0065] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0066] For a multi-user system containing N users, the interference suppression combining method of the present invention is as follows:

[0067] User i obtains the channel state information H of user i by estimating the base station i , where 1≤i≤N, N is the total number of users;

[0068] Use the precoding scheme to obtain the quantized precoding vector w of user i and interfering user j respectively i and w j ;

[0069] The quantized precoding vector w of the user i and the interfering user j i and w j can be obtained by adopting a zero-forcing beamforming precoding ...

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Abstract

The invention discloses an interference suppression merging method and a receiver. The method is applied in a multi-user system, and comprises the steps of: obtaining the signal channel state information of local users; acquiring the quantized precoding vectors of the local users and interference users; and forming a linear weight vector gi according to the signal channel state information, the quantized precoding vectors of the local users and the interference users. The receiver comprises an estimation module, a coding module and a weighting module, wherein the estimation module is used for estimating the signal channel state information of the local users; the coding module is used for obtaining the quantized precoding vectors of the local users and the interference users; and the weighting module is used for forming the linear weight vector gi according to the signal channel state information, the quantized precoding vectors of the local users and the interference users. The signaling information which is sent to the users by a base station does not only contain the purchase management index (PMI) of the local users, a user side can obtain the accurate interference information, direct calculation is carried out, and the interference and noise correlation matrix are obtained, so the multi-user interference is effectively eliminated.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an interference suppression combining method and an interference suppression combining receiver. Background technique [0002] In the next-generation broadband wireless communication network, how to support a larger bandwidth in the wireless communication network under the bandwidth of the current wireless communication system becomes a key factor in improving the throughput of user terminals between cells and the average throughput of user terminals. Facing severe challenges. [0003] In a multi-user system, for a ZF-BF (Zero-forcing beam forming, zero-forcing beam forming) precoding scheme, as the signal-to-noise ratio increases, the user throughput will reach a performance limit. This is because the limited number of feedback bits (bits) results in inaccurate channel information, which cannot completely eliminate inter-user interference. Under the condition of high sign...

Claims

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Application Information

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IPC IPC(8): H04B7/08
Inventor 魏巍
Owner ZTE CORP
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