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Method and system for random wave packet forming based on multi-aerial receiver

A technology of beamforming and receiver, which is applied in the field of random beamforming system, can solve the problem of linear increase of feedback amount, and achieve the effect of improving SINR and actual throughput

Inactive Publication Date: 2008-07-23
ZHEJIANG UNIV
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Problems solved by technology

But the amount of feedback increases linearly with the increase of the receiving antenna

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  • Method and system for random wave packet forming based on multi-aerial receiver
  • Method and system for random wave packet forming based on multi-aerial receiver
  • Method and system for random wave packet forming based on multi-aerial receiver

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Embodiment Construction

[0040] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0041] As shown in FIG. 1 , the system of the multi-antenna receiver-based random beamforming method provided by the present invention includes a base station and multiple receivers.

[0042] As shown in Figure 2, the base station consists of M transmitting antennas 1, M≥2, random beam generation module 2, pilot frequency generation module 3, channel information (CSI) demodulation module 4, scheduling module 5, modulation module 6, data pre- A processing module 7, a radio frequency module 8 and a base transceiver duplex module 9 are formed;

[0043] Wherein: the random beam generating module 2 generates M M-dimensional orthogonal random beams before each data transmission. The M×M dimensional independent and identically distributed complex Gaussian random matrix with zero mean unit variance can be generated first, and obtained by QR decomposition of this matrix and t...

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Abstract

The invention discloses a randomized beam forming method and the system on the basis of a multi-antenna receiver, which aims at limiting each receiver to obtain at most one beam, wherein each beam is respectively carried out merger of maximum signal-to-noise ratio (SINR) by the receiver, and feedback antenna which is merged obtains CSI of an equivalent channel. The system which is compared with a randomized beam forming system of a single antenna receiver is not added feedback cost of the system. A precoding mode, CSI feedback content and a dispatching mode of the whole system are completely same as the multi beam system of the single antenna receiver on the basis of a base station. The invention greatly increases throughput of the randomized beam forming system under the premise that CSI feedback quantity is not added.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a random beamforming system based on a multi-antenna receiver. Background technique [0002] Multi-antenna technology (MIMO) can effectively utilize the wireless communication multipath propagation environment, obtain spatial multiplexing (spatial multiplexing) and diversity (diversity) gains, and greatly improve the capacity of the communication system to meet the increasing capacity requirements of the wireless communication system. It is an inevitable choice for wireless communication systems in the future, and has been included in wireless communication standard protocols such as 802.11n and 802.16e. [0003] The analysis in Document 1 shows that under the multi-user multi-antenna (MU-MIMO) broadcast channel, the channel capacity increases at the rate of MloglogKN when the sender knows the complete channel information (full CSI). Where M is the number of transmitting an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04L1/06
Inventor 王海洋张朝阳
Owner ZHEJIANG UNIV
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